springmvc常用笔记

港控/mmm° 2022-05-29 10:37 215阅读 0赞

Spring MVC框架  
\------------ springmvc-1 ------------  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
HiddenHttpMethodFilter  
      
    <filter>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
    </filter>  
    <filter-mapping>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <url-pattern>/\*</url-pattern>  
    </filter-mapping>  
  
  
DispatcherServlet  
  
  
      
    <servlet>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
          
          
          
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>  
  
  
   
dispatcherServlet-servlet.xml  
<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
component-scan  
  
  
      
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
InternalResourceViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <property name="prefix" value="/WEB-INF/views/"></property>  
        <property name="suffix" value=".jsp"></property>  
    </bean>  
    
BeanNameViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">  
        <property name="order" value="100"></property>  
    </bean>  
  
  
ResourceBundleMessageSource  
      
    <bean id="messageSource"  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
        <property name="basename" value="i18n"></property>   
    </bean>  
    
view-controller  
      
      
    <mvc:view-controller path="/success" view-name="success"/>  
     
annotation-driven  
      
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
</beans>  
  
  
   
SpringMVCTest.java  
package com.atguigu.springmvc.handlers;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.Writer;  
  
  
import java.util.Arrays;  
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.CookieValue;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestHeader;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.SessionAttributes;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.entities.User;  
  
  
   
@SessionAttributes(value=\{"user"\}, types=\{String.class\})  
  
  
@RequestMapping("/springmvc")  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    private static final String SUCCESS = "success";  
  
  
redirect/ forward  
  
  
    @RequestMapping("/testRedirect")  
  
  
    public String testRedirect()\{  
  
  
        System.out.println("testRedirect");  
  
  
        // return "forward:/index.jsp";  
  
  
        return "redirect:/index.jsp";  
  
  
    \}  
  
  
View  
  
  
    @RequestMapping("/testView")  
  
  
    public String testView()\{  
  
  
        System.out.println("testView");  
  
  
        return "helloView";   //类名第一个字母小写  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/testViewAndViewResolver")  
  
  
    public String testViewAndViewResolver()\{  
  
  
        System.out.println("testViewAndViewResolver");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* 1. 有 @ModelAttribute 标记的方法, 会在每个目标方法执行之前被 SpringMVC 调用!  
  
  
     \* 2. @ModelAttribute 注解也可以来修饰目标方法 POJO 类型的入参, 其 value 属性值有如下的作用:  
  
  
     \* 1). SpringMVC 会使用 value 属性值在 implicitModel 中查找对应的对象, 若存在则会直接传入到目标方法的入参中.  
  
  
     \* 2). SpringMVC 会一 value 为 key, POJO 类型的对象为 value, 存入到 request 中.  
  
  
     \*/  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getUser(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("modelAttribute method");  
  
  
        if(id != null)\{  
  
  
            //模拟从数据库中获取对象  
  
  
            User user = new User(1, "Tom", "123456", "tom@atguigu.com", 12);  
  
  
            System.out.println("从数据库中获取一个对象: " + user);  
  
  
             
  
  
            map.put("user", user);  
  
  
        \}  
  
  
    \}  
  
  
     
    /\*\*  
  
  
     \* 运行流程:  
  
  
     \* 1. 执行 @ModelAttribute 注解修饰的方法: 从数据库中取出对象, 把对象放入到了 Map 中. 键为: user  
     \* 2. SpringMVC 从 Map 中取出 User 对象, 并把表单的请求参数赋给该 User 对象的对应属性.  
  
  
     \* 3. SpringMVC 把上述对象传入目标方法的参数.  
  
  
     \*  
  
  
     \* 注意: 在 @ModelAttribute 修饰的方法中, 放入到 Map 时的键需要和目标方法入参类型的第一个字母小写的字符串一致!  
  
  
     \*  
  
  
     \* SpringMVC 确定目标方法 POJO 类型入参的过程  
  
  
     \* 1. 确定一个 key:  
  
  
     \* 1). 若目标方法的 POJO 类型的参数木有使用 @ModelAttribute 作为修饰, 则 key 为 POJO 类名第一个字母的小写  
  
  
     \* 2). 若使用了  @ModelAttribute 来修饰, 则 key 为 @ModelAttribute 注解的 value 属性值.  
  
  
     \* 2. 在 implicitModel 中查找 key 对应的对象, 若存在, 则作为入参传入  
  
  
     \* 1). 若在 @ModelAttribute 标记的方法中在 Map 中保存过, 且 key 和 1 确定的 key 一致, 则会获取到.  
  
  
     \* 3. 若 implicitModel 中不存在 key 对应的对象, 则检查当前的 Handler 是否使用 @SessionAttributes 注解修饰,  
  
  
     \* 若使用了该注解, 且 @SessionAttributes 注解的 value 属性值中包含了 key, 则会从 HttpSession 中来获取 key 所  
  
  
     \* 对应的 value 值, 若存在则直接传入到目标方法的入参中. 若不存在则将抛出异常.  
  
  
     \* 4. 若 Handler 没有标识 @SessionAttributes 注解或 @SessionAttributes 注解的 value 值中不包含 key, 则  
  
  
     \* 会通过反射来创建 POJO 类型的参数, 传入为目标方法的参数  
  
  
     \* 5. SpringMVC 会把 key 和 POJO 类型的对象保存到 implicitModel 中, 进而会保存到 request 中.  
  
  
     \*  
  
  
     \* 源代码分析的流程  
  
  
     \* 1. 调用 @ModelAttribute 注解修饰的方法. 实际上把 @ModelAttribute 方法中 Map 中的数据放在了 implicitModel 中.  
  
  
     \* 2. 解析请求处理器的目标参数, 实际上该目标参数来自于 WebDataBinder 对象的 target 属性  
  
  
     \* 1). 创建 WebDataBinder 对象:  
  
  
     \* ①. 确定 objectName 属性: 若传入的 attrName 属性值为 "", 则 objectName 为类名第一个字母小写.  
  
  
     \* \*注意: attrName. 若目标方法的 POJO 属性使用了 @ModelAttribute 来修饰, 则 attrName 值即为 @ModelAttribute  
  
  
     \* 的 value 属性值  
  
  
     \*  
  
  
     \* ②. 确定 target 属性:  
  
  
     \*  > 在 implicitModel 中查找 attrName 对应的属性值. 若存在, ok  
  
  
     \*  > \*若不存在: 则验证当前 Handler 是否使用了 @SessionAttributes 进行修饰, 若使用了, 则尝试从 Session 中  
  
  
     \* 获取 attrName 所对应的属性值. 若 session 中没有对应的属性值, 则抛出了异常.  
  
  
     \*  > 若 Handler 没有使用 @SessionAttributes 进行修饰, 或 @SessionAttributes 中没有使用 value 值指定的 key  
  
  
     \* 和 attrName 相匹配, 则通过反射创建了 POJO 对象  
  
  
     \*  
  
  
     \* 2). SpringMVC 把表单的请求参数赋给了 WebDataBinder 的 target 对应的属性.  
  
  
     \* 3). \*SpringMVC 会把 WebDataBinder 的 attrName 和 target 给到 implicitModel.  
  
  
     \* 近而传到 request 域对象中.  
  
  
     \* 4). 把 WebDataBinder 的 target 作为参数传递给目标方法的入参.  
  
  
     \*/  
  
  
    @RequestMapping("/testModelAttribute")  
  
  
    public String testModelAttribute(User user)\{  
  
  
        System.out.println("修改: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* @SessionAttributes 除了可以通过属性名指定需要放到会话中的属性外(实际上使用的是 value 属性值),  
  
  
     \* 还可以通过模型属性的对象类型指定哪些模型属性需要放到会话中(实际上使用的是 types 属性值)  
  
  
     \*  
  
  
     \* 注意: 该注解只能放在类的上面. 而不能修饰放方法.  
  
  
     \*/  
  
  
@SessionAttributes  
  
  
    @RequestMapping("/testSessionAttributes")  
  
  
    public String testSessionAttributes(Map<String, Object> map)\{  
  
  
        User user = new User("Tom", "123456", "tom@atguigu.com", 15);  
  
  
        map.put("user", user);  
  
  
        map.put("school", "atguigu");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法可以添加 Map 类型(实际上也可以是 Model 类型或 ModelMap 类型)的参数.  
  
  
     \* @param map  
  
  
     \* @return  
  
  
     \*/  
  
  
Map  
  
  
    @RequestMapping("/testMap")  
  
  
    public String testMap(Map<String, Object> map)\{  
  
  
        System.out.println(map.getClass().getName());  
  
  
        map.put("names", Arrays.asList("Tom", "Jerry", "Mike"));  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法的返回值可以是 ModelAndView 类型。  
  
  
     \* 其中可以包含视图和模型信息  
  
  
     \* SpringMVC 会把 ModelAndView 的 model 中数据放入到 request 域对象中.  
  
  
     \* @return  
  
  
     \*/  
  
  
ModelAndView  
  
  
    @RequestMapping("/testModelAndView")  
  
  
    public ModelAndView testModelAndView()\{  
  
  
        String viewName = SUCCESS;  
  
  
        ModelAndView modelAndView = new ModelAndView(viewName);  
  
  
         
  
  
        //添加模型数据到 ModelAndView 中.  
  
  
        modelAndView.addObject("time", new Date());  
  
  
         
  
  
        return modelAndView;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 可以使用 Serlvet 原生的 API 作为目标方法的参数 具体支持以下类型  
  
  
     \*  
  
  
     \* HttpServletRequest  
  
  
     \* HttpServletResponse  
  
  
     \* HttpSession  
  
  
     \* java.security.Principal  
  
  
     \* Locale InputStream  
  
  
     \* OutputStream  
  
  
     \* Reader  
  
  
     \* Writer  
  
  
     \* @throws IOException  
  
  
     \*/  
  
  
ServletAPI  
  
  
    @RequestMapping("/testServletAPI")  
  
  
    public void testServletAPI(HttpServletRequest request,  
  
  
            HttpServletResponse response, Writer out) throws IOException \{  
  
  
        System.out.println("testServletAPI, " + request + ", " + response);  
  
  
        out.write("hello springmvc");  
  
  
//      return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* Spring MVC 会按请求参数名和 POJO 属性名进行自动匹配， 自动为该对象填充属性值。支持级联属性。  
  
  
     \* 如：dept.deptId、dept.address.tel 等  
  
  
     \*/  
  
  
Pojo  
  
  
    @RequestMapping("/testPojo")  
  
  
    public String testPojo(User user) \{  
  
  
        System.out.println("testPojo: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解:  
  
  
     \*  
  
  
     \* @CookieValue: 映射一个 Cookie 值. 属性同 @RequestParam  
  
  
     \*/  
  
  
@CookieValue  
  
  
    @RequestMapping("/testCookieValue")  
  
  
    public String testCookieValue(@CookieValue("JSESSIONID") String sessionId) \{  
  
  
        System.out.println("testCookieValue: sessionId: " + sessionId);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 映射请求头信息 用法同 @RequestParam  
  
  
     \*/  
  
  
@RequestHeader  
  
  
    @RequestMapping("/testRequestHeader")  
  
  
    public String testRequestHeader(  
  
  
            @RequestHeader(value = "Accept-Language") String al) \{  
  
  
        System.out.println("testRequestHeader, Accept-Language: " + al);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @RequestParam 来映射请求参数.  
  
  
     \* value 值即请求参数的参数名  
  
  
     \* required 该参数是否必须. 默认为 true  
  
  
     \* defaultValue 请求参数的默认值  
  
  
     \*/  
  
  
@RequestParam  
  
  
    @RequestMapping(value = "/testRequestParam")  
  
  
    public String testRequestParam(  
  
  
            @RequestParam(value = "username") String un,  
  
  
            @RequestParam(value = "age", required = false, defaultValue = "0") int age) \{  
  
  
        System.out.println("testRequestParam, username: " + un + ", age: "  
  
  
                + age);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* Rest 风格的 URL. 以 CRUD 为例:  
  
  
     \* 新增: /order POST  
  
  
     \* 修改: /order/1 PUT update?id=1  
  
  
     \* 获取: /order/1 GET get?id=1  
  
  
     \* 删除: /order/1 DELETE delete?id=1  
  
  
     \*  
  
  
     \* 如何发送 PUT 请求和 DELETE 请求呢 ?  
  
  
     \* 1. 需要配置 HiddenHttpMethodFilter  
  
  
     \* 2. 需要发送 POST 请求  
  
  
     \* 3. 需要在发送 POST 请求时携带一个 name="\_method" 的隐藏域, 值为 DELETE 或 PUT  
  
  
     \*  
  
  
     \* 在 SpringMVC 的目标方法中如何得到 id 呢? 使用 @PathVariable 注解  
  
  
     \*  
  
  
     \*/  
  
  
     
  
  
REST 改  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.PUT)  
  
  
    public String testRestPut(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Put: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 删  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.DELETE)  
  
  
    public String testRestDelete(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Delete: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 增  
  
  
    @RequestMapping(value = "/testRest", method = RequestMethod.POST)  
  
  
    public String testRest() \{  
  
  
        System.out.println("testRest POST");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 查  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.GET)  
  
  
    public String testRest(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest GET: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @PathVariable 可以来映射 URL 中的占位符到目标方法的参数中.  
  
  
     \* @param id  
  
  
     \* @return  
  
  
     \*/  
  
  
@PathVariable  
  
  
    @RequestMapping("/testPathVariable/\{id\}")  
  
  
    public String testPathVariable(@PathVariable("id") Integer id) \{  
  
  
        System.out.println("testPathVariable: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
@RequestMapping – URL  
  
  
    @RequestMapping("/testAntPath/\*/abc")  
  
  
    public String testAntPath() \{  
  
  
        System.out.println("testAntPath");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 可以使用 params 和 headers 来更加精确的映射请求. params 和 headers 支持简单的表达式.  
  
  
     \* 如果params不符合条件, 则无法访问页面  
  
  
     \* 如果headers不符合条件, 则无法访问页面  
  
  
     \*  
  
  
     \*  
  
  
     \* @return  
  
  
     \*/  
  
  
@RequestMapping – params - headers  
  
  
    @RequestMapping(value = "testParamsAndHeaders", params = \{ "username",  
  
  
            "age!=10" \}, headers = \{ "Accept-Language=zh-CN,zh;q=0.8,en;q=0.6,zh-TW;q=0.4" \})  
  
  
    public String testParamsAndHeaders() \{  
  
  
        System.out.println("testParamsAndHeaders");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 常用: 使用 method 属性来指定请求方式  
  
  
     \* <a href="" /> 通常为get  
  
  
     \*/  
  
  
@RequestMapping - method  
  
  
    @RequestMapping(value = "/testMethod", method = RequestMethod.POST)  
  
  
    public String testMethod() \{  
  
  
        System.out.println("testMethod");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 1. @RequestMapping 除了修饰方法, 还可来修饰类 2. 1). 类定义处: 提供初步的请求映射信息。相对于 WEB 应用的根目录  
  
  
     \* 2). 方法处: 提供进一步的细分映射信息。 相对于类定义处的 URL。若类定义处未标注 @RequestMapping，则方法处标记的 URL  
  
  
     \* 相对于 WEB 应用的根目录  
  
  
     \*/  
  
  
@RequestMapping  
  
  
    @RequestMapping("/testRequestMapping")  
  
  
    public String testRequestMapping() \{  
  
  
        System.out.println("testRequestMapping");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="springmvc/testRedirect">Test Redirect</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testView">Test View</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testViewAndViewResolver">Test ViewAndViewResolver</a>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
ModelAttribute  
  
  
    <form action="springmvc/testModelAttribute" method="Post">  
  
  
        <input type="hidden" name="id" value="1"/>  
  
  
        username: <input type="text" name="username" value="Tom"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email" value="tom@atguigu.com"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age" value="12"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
SessionAttributes  
  
  
    <a href="springmvc/testSessionAttributes">Test SessionAttributes</a>  
  
  
    <br><br>  
  
  
Map  
  
  
    <a href="springmvc/testMap">Test Map</a>  
  
  
    <br><br>  
  
  
ModelAndView  
  
  
    <a href="springmvc/testModelAndView">Test ModelAndView</a>  
  
  
    <br><br>  
  
  
ServletAPI  
  
  
    <a href="springmvc/testServletAPI">Test ServletAPI</a>  
  
  
    <br><br>  
  
  
Pojo  
  
  
    <form action="springmvc/testPojo" method="post">  
  
  
        username: <input type="text" name="username"/>  
  
  
        <br>  
  
  
        password: <input type="password" name="password"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age"/>  
  
  
        <br>  
  
  
        city: <input type="text" name="address.city"/>  
  
  
        <br>  
  
  
        province: <input type="text" name="address.province"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
CookieValue  
  
  
    <a href="springmvc/testCookieValue">Test CookieValue</a>  
  
  
    <br><br>  
  
  
RequestHeader  
  
  
    <a href="springmvc/testRequestHeader">Test RequestHeader</a>  
  
  
    <br><br>  
  
  
RequestParam  
  
  
    <a href="springmvc/testRequestParam?username=atguigu&age=11">Test RequestParam</a>  
  
  
    <br><br>  
  
  
REST 改  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="PUT"/>  
  
  
        <input type="submit" value="TestRest PUT"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 删  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
        <input type="submit" value="TestRest DELETE"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 增  
  
  
    <form action="springmvc/testRest" method="post">  
  
  
        <input type="submit" value="TestRest POST"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 查  
  
  
    <a href="springmvc/testRest/1">Test Rest Get</a>  
  
  
    <br><br>  
  
  
@PathVariable  
  
  
    <a href="springmvc/testPathVariable/1">Test PathVariable</a>  
  
  
    <br><br>  
  
  
@RequestMapping – URL  
  
  
    <a href="springmvc/testAntPath/mnxyz/abc">Test AntPath</a>  
  
  
    <br><br>  
  
  
@RequestMapping – params - headers  
  
  
    <a href="springmvc/testParamsAndHeaders?username=atguigu&age=10">Test ParamsAndHeaders</a>  
  
  
    <br><br>  
  
  
@RequestMapping - method  
  
  
    <form action="springmvc/testMethod" method="POST">  
  
  
        <input type="submit" value="submit"/>  
  
  
    </form>  
  
  
   
  
  
    <br><br>  
  
  
    <a href="springmvc/testMethod">Test Method</a>  
  
  
@RequestMapping  
  
  
    <br><br>  
  
  
    <a href="springmvc/testRequestMapping">Test RequestMapping</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="helloworld">Hello World</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Sucess Page</h4>  
  
  
     
  
  
    time: $\{requestScope.time \}  
  
  
    <br><br>  
  
  
     
  
  
    names: $\{requestScope.names \}  
  
  
    <br><br>  
  
  
     
  
  
    request user: $\{requestScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    session user: $\{sessionScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    request school: $\{requestScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    session school: $\{sessionScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    abc user: $\{requestScope.abc \}  
  
  
    <br><br>  
  
  
     
  
  
    mnxyz user: $\{requestScope.mnxyz \}  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.username"></fmt:message>  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
    <br><br>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
HelloView.java  
  
  
package com.atguigu.springmvc.views;  
  
  
   
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
import org.springframework.stereotype.Component;  
  
  
import org.springframework.web.servlet.View;  
  
  
   
  
  
//自定义的view, 需要在XML中配置BeanNameViewResolver  
  
  
@Component    //把view 放到ioc 容器里面  
  
  
public class HelloView implements View\{  
  
  
   
  
  
    @Override  
  
  
    public String getContentType() \{  
  
  
        return "text/html";  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public void render(Map<String, ?> model, HttpServletRequest request,  
  
  
            HttpServletResponse response) throws Exception \{  
  
  
        response.getWriter().print("hello view, time: " + new Date());  
  
  
    \}  
  
  
\}  
  
  
   
  
  
\------------ springmvc-2 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
   
  
  
      
  
  
      
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
      
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
      
  
  
    <filter>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
  
  
    </filter>  
  
  
     
  
  
    <filter-mapping>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <url-pattern>/\*</url-pattern>  
  
  
    </filter-mapping>  
  
  
   
  
  
</web-app>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
      
  
  
  
  
  
<!—如果加了这个,没有配置 annotation-driven 的话那requestmapping就不能用了 -->  
  
  
<mvc:default-servlet-handler/>    
  
  
配置 annotation-driven  
  
  
      
  
  
  
  
  
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>   
  
  
     
  
  
配置 ConversionService注册自定义格式转换器  
  
  
       
  
  
    <bean id="conversionService"  
  
  
        class="org.springframework.format.support.FormattingConversionServiceFactoryBean">  
  
  
        <property name="converters">  
  
  
            <set>  
  
  
                <ref bean="employeeConverter"/>  
  
  
            </set>  
  
  
        </property>  
  
  
    </bean>  
  
  
     
  
  
配置国际化资源文件  
  
  
      
  
  
    <bean id="messageSource"  
  
  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
  
  
        <property name="basename" value="i18n"></property>  
  
  
    </bean>  
  
  
     
  
  
配置 SessionLocalResolver, 用于把locale存放到session中  
  
  
      
  
  
    <bean id="localeResolver"  
  
  
        class="org.springframework.web.servlet.i18n.SessionLocaleResolver">  
  
  
</bean>  
  
  
     
  
  
配置自定义的拦截器interceptors  
  
  
<mvc:interceptors>  
  
  
配置自定义的拦截器FirstInterceptor  
  
  
          
  
  
        <bean class="com.atguigu.springmvc.interceptors.FirstInterceptor"></bean>  
  
  
         
  
  
配置拦截器(不)作用的路径SecondInterceptor  
  
  
          
  
  
        <mvc:interceptor>  
  
  
            <mvc:mapping path="/emps"/>  
  
  
            <bean class="com.atguigu.springmvc.interceptors.SecondInterceptor"></bean>  
  
  
        </mvc:interceptor>  
  
  
         
  
  
LocaleChangeInterceptor – i18n 国际化  
  
  
          
  
  
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"></bean>  
  
  
    </mvc:interceptors>  
  
  
     
  
  
配置 view-controller – i18n  
  
  
      
  
  
    <mvc:view-controller path="/i18n2" view-name="i18n2"/>    
  
  
     
  
  
配置 MultipartResolver – 文件上传  
  
  
      
  
  
    <bean id="multipartResolver"  
  
  
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
  
  
        <property name="defaultEncoding" value="UTF-8"></property>  
  
  
        <property name="maxUploadSize" value="1024000"></property>   
  
  
    </bean>  
  
  
     
  
  
配置使用 SimpleMappingExceptionResolver 来映射异常  
  
  
      
  
  
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">  
  
  
        <property name="exceptionAttribute" value="ex"></property>  
  
  
        <property name="exceptionMappings">  
  
  
            <props>  
  
  
                <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>  
  
  
  
  
  
            </props>  
  
  
        </property>  
  
  
    </bean>  
  
  
         
  
  
</beans>  
  
  
EmployeeHandler.java  
  
  
package com.atguigu.springmvc.crud.handlers;  
  
  
   
  
  
import java.util.Map;  
  
  
   
  
  
import javax.validation.Valid;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.validation.Errors;  
  
  
import org.springframework.validation.FieldError;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.DepartmentDao;  
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class EmployeeHandler \{  
  
  
   
  
  
@Autowired  
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getEmployee(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        if(id != null)\{  
  
  
            map.put("employee", employeeDao.get(id));  
  
  
        \}  
  
  
    \}  
  
  
改  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.PUT)  
  
  
    public String update(Employee employee)\{  
  
  
        employeeDao.save(employee);  
  
  
         
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
查  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.GET)  
  
  
    public String input(@PathVariable("id") Integer id, Map<String, Object> map)\{  
  
  
        map.put("employee", employeeDao.get(id));  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        return "input";  
  
  
    \}  
  
  
删  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.DELETE)  
  
  
    public String delete(@PathVariable("id") Integer id)\{  
  
  
        employeeDao.delete(id);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
增 @Valid/BindingResult/Errors  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.POST)  
  
  
    public String save(@Valid Employee employee, Errors result,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("save: " + employee);  
  
  
         
  
  
        if(result.getErrorCount() > 0)\{  
  
  
            System.out.println("出错了!");  
  
  
             
  
  
            for(FieldError error:result.getFieldErrors())\{  
  
  
                System.out.println(error.getField() + ":" + error.getDefaultMessage());  
  
  
            \}  
  
  
             
  
  
            //若验证出错, 则转向定制的页面  
  
  
            map.put("departments", departmentDao.getDepartments());  
  
  
            return "input";  
  
  
        \}  
  
  
         
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
显示添加员工页面  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.GET)  
  
  
    public String input(Map<String, Object> map)\{  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        map.put("employee", new Employee()); // 此处必须添加new Employee()到map中才能显示input.jsp  
  
  
        return "input";  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/emps")  
  
  
    public String list(Map<String, Object> map)\{  
  
  
        map.put("employees", employeeDao.getAll());  
  
  
        return "list";  
  
  
    \}  
  
  
     
  
  
    //设置lastName不进行赋值  
  
  
//  @InitBinder  
  
  
//  public void initBinder(WebDataBinder binder)\{  
  
  
//      binder.setDisallowedFields("lastName");  
  
  
//  \}  
  
  
     
  
  
\}  
  
  
   
  
  
SpringMVCTest.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.InputStream;  
  
  
import java.util.Collection;  
  
  
import java.util.Date;  
  
  
import java.util.Locale;  
  
  
import java.util.Map;  
  
  
import javax.servlet.ServletContext;  
  
  
import javax.servlet.http.HttpSession;  
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.context.support.ResourceBundleMessageSource;  
  
  
import org.springframework.http.HttpHeaders;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.http.ResponseEntity;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.bind.annotation.RequestBody;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.ResponseBody;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
import org.springframework.web.multipart.MultipartFile;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
ResourceBundleMessageSource 国际化资源信息获取  
  
  
    @Autowired  
  
  
    private ResourceBundleMessageSource messageSource;  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    @RequestMapping("/testSimpleMappingExceptionResolver")  
  
  
    public String testSimpleMappingExceptionResolver(@RequestParam("i") int i)\{  
  
  
        String \[\] vals = new String\[10\];  
  
  
        System.out.println(vals\[i\]);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    @RequestMapping(value="/testDefaultHandlerExceptionResolver",method=RequestMethod.POST)  
  
  
    public String testDefaultHandlerExceptionResolver()\{  
  
  
        System.out.println("testDefaultHandlerExceptionResolver...");  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
ResponseStatusExceptionResolver @ResponseStatus  
  
  
@ResponseStatus(reason="测试",value=HttpStatus.NOT\_FOUND)  
  
  
//如果在方法上加这个注解,则无论i是什么都会抛出异常  
  
  
//如果在类上加这个注解,则i=13时抛出异常  
  
  
    @RequestMapping("/testResponseStatusExceptionResolver")  
  
  
    public String testResponseStatusExceptionResolver(@RequestParam("i") int i)\{  
  
  
        if(i == 13)\{  
  
  
            throw new UserNameNotMatchPasswordException();  
  
  
        \}  
  
  
        System.out.println("testResponseStatusExceptionResolver...");  
  
  
         
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
handleArithmeticException, @ExceptionHandler  
  
  
//  @ExceptionHandler(\{RuntimeException.class\})  
  
  
//  public ModelAndView handleArithmeticException2(Exception ex)\{  
  
  
//      System.out.println("\[出异常了\]: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 1. 在 @ExceptionHandler 方法的入参中可以加入 Exception 类型的参数, 该参数即对应发生的异常对象  
  
  
     \* 2. @ExceptionHandler 方法的入参中不能传入 Map. 若希望把异常信息传导页面上, 需要使用 ModelAndView 作为返回值  
  
  
     \* 3. @ExceptionHandler 方法标记的异常有优先级的问题.  
  
  
     \* 4. @ControllerAdvice: 如果在当前 Handler 中找不到 @ExceptionHandler 方法来出来当前方法出现的异常,  
  
  
     \* 则将去 @ControllerAdvice 标记的类中查找 @ExceptionHandler 标记的方法来处理异常.  
  
  
     \*/  
  
  
//  @ExceptionHandler(\{ArithmeticException.class\})  
  
  
//  public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
//      System.out.println("出异常了: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    @RequestMapping("/testExceptionHandlerExceptionResolver")  
  
  
    public String testExceptionHandlerExceptionResolver(@RequestParam("i") int i)\{  
  
  
        System.out.println("result: " + (10 / i));  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
FileUpload  
  
  
    @RequestMapping("/testFileUpload")  
  
  
    public String testFileUpload(@RequestParam("desc") String desc,  
  
  
            @RequestParam("file") MultipartFile file) throws IOException\{  
  
  
        System.out.println("desc: " + desc);  
  
  
        System.out.println("OriginalFilename: " + file.getOriginalFilename());  
  
  
        System.out.println("InputStream: " + file.getInputStream());  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
国际化 i18n  
  
  
    @RequestMapping("/i18n")  
  
  
    public String testI18n(Locale locale)\{  
  
  
        String val = messageSource.getMessage("i18n.user", null, locale);  
  
  
        System.out.println(val);  
  
  
        return "i18n";  
  
  
    \}  
  
  
     
  
  
ResponseEntity  
  
  
    @RequestMapping("/testResponseEntity")  
  
  
    public ResponseEntity<byte\[\]> testResponseEntity(HttpSession session) throws IOException\{  
  
  
        byte \[\] body = null;  
  
  
        ServletContext servletContext = session.getServletContext();  
  
  
        InputStream in = servletContext.getResourceAsStream("/files/abc.txt");  
  
  
        body = new byte\[in.available()\];  
  
  
        in.read(body);  
  
  
         
  
  
        HttpHeaders headers = new HttpHeaders();  
  
  
        headers.add("Content-Disposition", "attachment;filename=abc.txt");  
  
  
         
  
  
        HttpStatus statusCode = HttpStatus.OK;  
  
  
         
  
  
        ResponseEntity<byte\[\]> response = new ResponseEntity<byte\[\]>(body, headers, statusCode);  
  
  
        return response;  
  
  
    \}  
  
  
     
  
  
HttpMessageConverter  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testHttpMessageConverter")  
  
  
    public String testHttpMessageConverter(@RequestBody String body)\{  
  
  
        System.out.println(body);  
  
  
        return "helloworld! " + new Date();  
  
  
    \}  
  
  
     
  
  
@ResponseBody – 处理Jason数据  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testJson")  
  
  
    public Collection<Employee> testJson()\{  
  
  
        return employeeDao.getAll();  
  
  
    \}  
  
  
     
  
  
ConversionService Converer  
  
  
    @RequestMapping("/testConversionServiceConverer")  
  
  
    public String testConverter(@RequestParam("employee") Employee employee)\{  
  
  
        System.out.println("save: " + employee);  
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
list.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
删  
  
  
<!—此处用于将delete请求转换为 post 请求-->  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $(".delete").click(function()\{  
  
  
            var href = $(this).attr("href");  
  
  
            $("form").attr("action", href).submit();             
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
删  
  
  
    <!—此处用于将delete请求转换为 post 请求-->  
  
  
    <form action="" method="POST">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
    </form>  
  
  
     
  
  
    <c:if test="$\{empty requestScope.employees \}">  
  
  
        没有任何员工信息.  
  
  
    </c:if>  
  
  
    <c:if test="$\{!empty requestScope.employees \}">  
  
  
        <table border="1" cellpadding="10" cellspacing="0">  
  
  
            <tr>  
  
  
                <th>ID</th>  
  
  
                <th>LastName</th>  
  
  
                <th>Email</th>  
  
  
                <th>Gender</th>  
  
  
                <th>Department</th>  
  
  
                <th>Edit</th>  
  
  
                <th>Delete</th>  
  
  
            </tr>  
  
  
             
  
  
            <c:forEach items="$\{requestScope.employees \}" var="emp">  
  
  
                <tr>  
  
  
                    <td>$\{emp.id \}</td>  
  
  
                    <td>$\{emp.lastName \}</td>  
  
  
                    <td>$\{emp.email \}</td>  
  
  
                    <td>$\{emp.gender == 0 ? ‘Female‘ : ‘Male‘ \}</td>  
  
  
                    <td>$\{emp.department.departmentName \}</td>  
  
  
改  
  
  
                    <td><a href="emp/$\{emp.id\}">Edit</a></td>  
  
  
删  
  
  
                    <td><a class="delete" href="emp/$\{emp.id\}">Delete</a></td>  
  
  
                    
  
  
                </tr>  
  
  
            </c:forEach>  
  
  
        </table>  
  
  
    </c:if>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emp">Add New Employee</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
input.jsp  
  
  
Errors  
  
  
Hidden  
  
  
input  
  
  
radiobuttons  
  
  
select  
  
  
   
  
  
<%@page import="java.util.HashMap"%>  
  
  
<%@page import="java.util.Map"%>  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
测试字符串格式添加用户converter  
  
  
    <form action="testConversionServiceConverer" method="POST">  
  
  
          
  
  
        Employee: <input type="text" name="employee"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
增  
  
  
<form:form action="$\{pageContext.request.contextPath \}/emp" method="POST"  
  
  
        modelAttribute="employee">  
  
  
         
  
  
        <form:errors path="\*"></form:errors>  
  
  
        <br>  
  
  
         
  
  
        <c:if test="$\{employee.id == null \}">  
  
  
              
  
  
            LastName: <form:input path="lastName"/>  
  
  
            <form:errors path="lastName"></form:errors>  
  
  
        </c:if>  
  
  
        <c:if test="$\{employee.id != null \}">  
  
  
            <form:hidden path="id"/>  
  
  
            <input type="hidden" name="\_method" value="PUT"/>  
  
  
            <%-- 对于 \_method 不能使用 form:hidden 标签, 因为 modelAttribute 对应的 bean 中没有 \_method 这个属性 --%>  
  
  
            <%--  
  
  
            <form:hidden path="\_method" value="PUT"/>  
  
  
            --%>  
  
  
        </c:if>  
  
  
         
  
  
        <br>  
  
  
        Email: <form:input path="email"/>  
  
  
        <form:errors path="email"></form:errors>  
  
  
        <br>  
  
  
        <%  
  
  
            Map<String, String> genders = new HashMap();  
  
  
            genders.put("1", "Male");  
  
  
            genders.put("0", "Female");  
  
  
             
  
  
            request.setAttribute("genders", genders);  
  
  
        %>  
  
  
        Gender:  
  
  
        <br>  
  
  
        <form:radiobuttons path="gender" items="$\{genders \}" delimiter="<br>"/>  
  
  
        <br>  
  
  
        Department: <form:select path="department.id"  
  
  
            items="$\{departments \}" itemLabel="departmentName" itemValue="id"></form:select>  
  
  
        <br>  
  
  
          
  
  
         
  
  
        Birth: <form:input path="birth"/>  
  
  
        <form:errors path="birth"></form:errors>  
  
  
        <br>  
  
  
        Salary: <form:input path="salary"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form:form>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $("\#testJson").click(function()\{  
  
  
            var url = this.href;  
  
  
            var args = \{\};  
  
  
            $.post(url, args, function(data)\{  
  
  
                for(var i = 0; i < data.length; i++)\{  
  
  
                    var id = data\[i\].id;  
  
  
                    var lastName = data\[i\].lastName;  
  
  
                      
  
  
                    alert(id + ": " + lastName);  
  
  
                \}  
  
  
            \});  
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
FileUpload 文件上传  
  
  
    <form action="testFileUpload" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emps">List All Employees</a>  
  
  
    <br><br>  
  
  
     
  
  
testJson  
  
  
    <a href="testJson" id="testJson">Test Json</a>  
  
  
    <br><br>  
  
  
     
  
  
HttpMessageConverter 文件上传  
  
  
    <form action="testHttpMessageConverter" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
ResponseEntity  
  
  
    <a href="testResponseEntity">Test ResponseEntity</a>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testExceptionHandlerExceptionResolver?i=10">Test ExceptionHandlerExceptionResolver</a>  
  
  
     
  
  
ResponseStatusExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testResponseStatusExceptionResolver?i=10">Test ResponseStatusExceptionResolver</a>  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testDefaultHandlerExceptionResolver">Test DefaultHandlerExceptionResolver</a>  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testSimpleMappingExceptionResolver?i=2">Test SimpleMappingExceptionResolver</a>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
i18n.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
Fmt 标签  
  
  
    <fmt:message key="i18n.user"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n2">I18N2 PAGE</a>  
  
  
     
  
  
Locale , 实现中英文切换效果,  
  
  
需配置解析器SessionLocalResolver  
  
  
和配置拦截器LocaleChangeInterceptor  
  
  
    <br><br>  
  
  
    <a href="i18n?locale=zh\_CH">中文</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n?locale=en\_US">英文</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
i18n2.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
error.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Error Page</h4>  
  
  
    $\{requestScope.exception \}  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
EmployeeConverter.java  
  
  
package com.atguigu.springmvc.converters;  
  
  
   
  
  
import org.springframework.core.convert.converter.Converter;  
  
  
import org.springframework.stereotype.Component;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Component  
  
  
@Component  
  
  
public class EmployeeConverter implements Converter<String, Employee> \{  
  
  
//string 转为 Employee  
  
  
convert  
  
  
    @Override  
  
  
    public Employee convert(String source) \{  
  
  
        if(source != null)\{  
  
  
            String \[\] vals = source.split("-");  
  
  
            //GG-gg@atguigu.com-0-105  
  
  
            if(vals != null && vals.length == 4)\{  
  
  
                String lastName = vals\[0\];  
  
  
                String email = vals\[1\];  
  
  
                Integer gender = Integer.parseInt(vals\[2\]);  
  
  
                Department department = new Department();  
  
  
                department.setId(Integer.parseInt(vals\[3\]));  
  
  
                 
  
  
                Employee employee = new Employee(null, lastName, email, gender, department);  
  
  
                System.out.println(source + "--convert--" + employee);  
  
  
                return employee;  
  
  
            \}  
  
  
        \}  
  
  
        return null;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
DepartmentDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
   
  
  
@Repository  
  
  
public class DepartmentDao \{  
  
  
   
  
  
    private static Map<Integer, Department> departments = null;  
  
  
     
  
  
    static\{  
  
  
        departments = new HashMap<Integer, Department>();  
  
  
         
  
  
        departments.put(101, new Department(101, "D-AA"));  
  
  
        departments.put(102, new Department(102, "D-BB"));  
  
  
        departments.put(103, new Department(103, "D-CC"));  
  
  
        departments.put(104, new Department(104, "D-DD"));  
  
  
        departments.put(105, new Department(105, "D-EE"));  
  
  
    \}  
  
  
     
  
  
    public Collection<Department> getDepartments()\{  
  
  
        return departments.values();  
  
  
    \}  
  
  
     
  
  
    public Department getDepartment(Integer id)\{  
  
  
        return departments.get(id);  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
EmployeeDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Repository  
  
  
public class EmployeeDao \{  
  
  
   
  
  
    private static Map<Integer, Employee> employees = null;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
     
  
  
    static\{  
  
  
        employees = new HashMap<Integer, Employee>();  
  
  
   
  
  
        employees.put(1001, new Employee(1001, "E-AA", "aa@163.com", 1, new Department(101, "D-AA")));  
  
  
        employees.put(1002, new Employee(1002, "E-BB", "bb@163.com", 1, new Department(102, "D-BB")));  
  
  
        employees.put(1003, new Employee(1003, "E-CC", "cc@163.com", 0, new Department(103, "D-CC")));  
  
  
        employees.put(1004, new Employee(1004, "E-DD", "dd@163.com", 0, new Department(104, "D-DD")));  
  
  
        employees.put(1005, new Employee(1005, "E-EE", "ee@163.com", 1, new Department(105, "D-EE")));  
  
  
    \}  
  
  
     
  
  
    private static Integer initId = 1006;  
  
  
     
  
  
    public void save(Employee employee)\{  
  
  
        if(employee.getId() == null)\{  
  
  
            employee.setId(initId++);  
  
  
        \}  
  
  
         
  
  
        employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));  
  
  
        employees.put(employee.getId(), employee);  
  
  
    \}  
  
  
     
  
  
    public Collection<Employee> getAll()\{  
  
  
        return employees.values();  
  
  
    \}  
  
  
     
  
  
    public Employee get(Integer id)\{  
  
  
        return employees.get(id);  
  
  
    \}  
  
  
     
  
  
    public void delete(Integer id)\{  
  
  
        employees.remove(id);  
  
  
    \}  
  
  
\}  
  
  
Employee.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
import java.util.Date;  
  
  
import javax.validation.constraints.Past;  
  
  
import org.hibernate.validator.constraints.Email;  
  
  
import org.hibernate.validator.constraints.NotEmpty;  
  
  
import org.springframework.format.annotation.DateTimeFormat;  
  
  
import org.springframework.format.annotation.NumberFormat;  
  
  
   
  
  
public class Employee \{  
  
  
   
  
  
private Integer id;  
  
  
@NotEmpty  
  
  
    @NotEmpty  
  
  
    private String lastName;  
  
  
@Emai  
  
  
    @Email  
  
  
    private String email;  
  
  
    //1 male, 0 female  
  
  
    private Integer gender;  
  
  
     
  
  
    private Department department;  
  
  
@Past  
  
  
@DateTimeFormat  
  
  
    @Past  
  
  
    @DateTimeFormat(pattern="yyyy-MM-dd")  
  
  
    private Date birth;  
  
  
@NumberFormat  
  
  
    @NumberFormat(pattern="\#,\#\#\#,\#\#\#.\#")  
  
  
    private Float salary;  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getLastName() \{  
  
  
        return lastName;  
  
  
    \}  
  
  
   
  
  
    public void setLastName(String lastName) \{  
  
  
        this.lastName = lastName;  
  
  
    \}  
  
  
   
  
  
    public String getEmail() \{  
  
  
        return email;  
  
  
    \}  
  
  
   
  
  
    public void setEmail(String email) \{  
  
  
        this.email = email;  
  
  
    \}  
  
  
   
  
  
    public Integer getGender() \{  
  
  
        return gender;  
  
  
    \}  
  
  
   
  
  
    public void setGender(Integer gender) \{  
  
  
        this.gender = gender;  
  
  
    \}  
  
  
   
  
  
    public Department getDepartment() \{  
  
  
        return department;  
  
  
    \}  
  
  
   
  
  
    public void setDepartment(Department department) \{  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Date getBirth() \{  
  
  
        return birth;  
  
  
    \}  
  
  
   
  
  
    public void setBirth(Date birth) \{  
  
  
        this.birth = birth;  
  
  
    \}  
  
  
   
  
  
    public Float getSalary() \{  
  
  
        return salary;  
  
  
    \}  
  
  
   
  
  
    public void setSalary(Float salary) \{  
  
  
        this.salary = salary;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Employee \[id=" + id + ", lastName=" + lastName + ", email="  
  
  
                + email + ", gender=" + gender + ", department=" + department  
  
  
                + ", birth=" + birth + ", salary=" + salary + "\]";  
  
  
    \}  
  
  
   
  
  
    public Employee(Integer id, String lastName, String email, Integer gender,  
  
  
            Department department) \{  
  
  
        super();  
  
  
        this.id = id;  
  
  
        this.lastName = lastName;  
  
  
        this.email = email;  
  
  
        this.gender = gender;  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Employee() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
\}  
  
  
Department.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
   
  
  
public class Department \{  
  
  
   
  
  
    private Integer id;  
  
  
    private String departmentName;  
  
  
   
  
  
    public Department() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
     
  
  
    public Department(int i, String string) \{  
  
  
        this.id = i;  
  
  
        this.departmentName = string;  
  
  
    \}  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getDepartmentName() \{  
  
  
        return departmentName;  
  
  
    \}  
  
  
   
  
  
    public void setDepartmentName(String departmentName) \{  
  
  
        this.departmentName = departmentName;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Department \[id=" + id + ", departmentName=" + departmentName  
  
  
                + "\]";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
i18n.properties  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
i18n\_zh\_CN.properties  
  
  
\#名字不能为空  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=\\u7528\\u6237\\u540D  
  
  
i18n.password=\\u5BC6\\u7801  
  
  
i18n\_en\_US.properties  
  
  
\#定制错误消息, 提示消息的国际化  
  
  
\#校验注解类名.bean类名.属性名  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
   
  
  
FirstInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
HandlerInterceptor 自定义拦截器  
  
  
public class FirstInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \* 正序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] preHandle");  
  
  
        return true;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \* 反序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \* 反序执行  
  
  
\*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
SecondInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
public class SecondInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] preHandle");  
  
  
        return false;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
SpringMVCTestExceptionHandler.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
@ControllerAdvice  
  
  
@ControllerAdvice  
  
  
public class SpringMVCTestExceptionHandler \{  
  
  
   
  
  
    @ExceptionHandler(\{ArithmeticException.class\})  
  
  
    public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
        System.out.println("----> 出异常了: " + ex);  
  
  
        ModelAndView mv = new ModelAndView("error");  
  
  
        mv.addObject("exception", ex);  
  
  
        return mv;  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
UserNameNotMatchPasswordException.java  
  
  
package com.atguigu.springmvc.test;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
   
  
  
@ResponseStatus  
  
  
@ResponseStatus(value=HttpStatus.FORBIDDEN, reason="用户名和密码不匹配!")  
  
  
public class UserNameNotMatchPasswordException extends RuntimeException\{  
  
  
   
  
  
    /\*\*  
  
  
     \*  
  
  
     \*/  
  
  
    private static final long serialVersionUID = 1L;  
  
  
   
  
  
     
  
  
\}  
  
  
   
  
  
\------------ springmvc-3 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
     
  
  
      
  
  
      
  
  
    <context-param>  
  
  
        <param-name>contextConfigLocation</param-name>  
  
  
        <param-value>classpath:beans.xml</param-value>  
  
  
    </context-param>  
  
  
   
  
  
      
  
  
    <listener>  
  
  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
  
  
    </listener>  
  
  
     
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
</web-app>  
  
  
beans.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">  
  
  
   
  
  
    <context:component-scan base-package="com.atguigu.springmvc">  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
   
  
  
</beans>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
     
  
  
      
  
  
     
  
  
      
  
  
     
  
  
    <context:component-scan base-package="com.atguigu.springmvc" use-default-filters="false">  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
    <mvc:default-servlet-handler/>  
  
  
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
     
  
  
</beans>  
  
  
HelloWorld.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
   
  
  
@Controller  
  
  
public class HelloWorld \{  
  
  
   
  
  
    @Autowired  
  
  
    private UserService userService;  
  
  
     
  
  
    public HelloWorld() \{  
  
  
        System.out.println("HelloWorld Constructor...");  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/helloworld")  
  
  
    public String hello()\{  
  
  
        System.out.println("success");  
  
  
        System.out.println(userService);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
UserService.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Service;  
  
  
   
  
  
@Service  
  
  
public class UserService \{  
  
  
   
  
  
    @Autowired  
  
  
    private HelloWorld helloWorld;  
  
  
     
  
  
    public UserService() \{  
  
  
        System.out.println("UserService Constructor...");  
  
  
    \}  
  
  
     
  
  
\}  
  
  
abc.html  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Httml Page</h4>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="helloworld">Hello World</a>  
  
  
   
  
  
</body>  
  
  
</html>  
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Success Page</h4>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
EndSpring MVC框架  
  
  
   
  
  
\------------ springmvc-1 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
HiddenHttpMethodFilter  
      
    <filter>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
    </filter>  
    <filter-mapping>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <url-pattern>/\*</url-pattern>  
    </filter-mapping>  
  
  
DispatcherServlet  
  
  
      
    <servlet>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
          
          
          
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>  
  
  
   
dispatcherServlet-servlet.xml  
<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
component-scan  
  
  
      
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
InternalResourceViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <property name="prefix" value="/WEB-INF/views/"></property>  
        <property name="suffix" value=".jsp"></property>  
    </bean>  
    
BeanNameViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">  
        <property name="order" value="100"></property>  
    </bean>  
  
  
ResourceBundleMessageSource  
      
    <bean id="messageSource"  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
        <property name="basename" value="i18n"></property>   
    </bean>  
    
view-controller  
      
      
    <mvc:view-controller path="/success" view-name="success"/>  
     
annotation-driven  
      
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
</beans>  
  
  
   
SpringMVCTest.java  
package com.atguigu.springmvc.handlers;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.Writer;  
  
  
import java.util.Arrays;  
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.CookieValue;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestHeader;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.SessionAttributes;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.entities.User;  
  
  
   
@SessionAttributes(value=\{"user"\}, types=\{String.class\})  
  
  
@RequestMapping("/springmvc")  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    private static final String SUCCESS = "success";  
  
  
redirect/ forward  
  
  
    @RequestMapping("/testRedirect")  
  
  
    public String testRedirect()\{  
  
  
        System.out.println("testRedirect");  
  
  
        // return "forward:/index.jsp";  
  
  
        return "redirect:/index.jsp";  
  
  
    \}  
  
  
View  
  
  
    @RequestMapping("/testView")  
  
  
    public String testView()\{  
  
  
        System.out.println("testView");  
  
  
        return "helloView";   //类名第一个字母小写  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/testViewAndViewResolver")  
  
  
    public String testViewAndViewResolver()\{  
  
  
        System.out.println("testViewAndViewResolver");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* 1. 有 @ModelAttribute 标记的方法, 会在每个目标方法执行之前被 SpringMVC 调用!  
  
  
     \* 2. @ModelAttribute 注解也可以来修饰目标方法 POJO 类型的入参, 其 value 属性值有如下的作用:  
  
  
     \* 1). SpringMVC 会使用 value 属性值在 implicitModel 中查找对应的对象, 若存在则会直接传入到目标方法的入参中.  
  
  
     \* 2). SpringMVC 会一 value 为 key, POJO 类型的对象为 value, 存入到 request 中.  
  
  
     \*/  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getUser(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("modelAttribute method");  
  
  
        if(id != null)\{  
  
  
            //模拟从数据库中获取对象  
  
  
            User user = new User(1, "Tom", "123456", "tom@atguigu.com", 12);  
  
  
            System.out.println("从数据库中获取一个对象: " + user);  
  
  
             
  
  
            map.put("user", user);  
  
  
        \}  
  
  
    \}  
  
  
     
    /\*\*  
  
  
     \* 运行流程:  
  
  
     \* 1. 执行 @ModelAttribute 注解修饰的方法: 从数据库中取出对象, 把对象放入到了 Map 中. 键为: user  
     \* 2. SpringMVC 从 Map 中取出 User 对象, 并把表单的请求参数赋给该 User 对象的对应属性.  
  
  
     \* 3. SpringMVC 把上述对象传入目标方法的参数.  
  
  
     \*  
  
  
     \* 注意: 在 @ModelAttribute 修饰的方法中, 放入到 Map 时的键需要和目标方法入参类型的第一个字母小写的字符串一致!  
  
  
     \*  
  
  
     \* SpringMVC 确定目标方法 POJO 类型入参的过程  
  
  
     \* 1. 确定一个 key:  
  
  
     \* 1). 若目标方法的 POJO 类型的参数木有使用 @ModelAttribute 作为修饰, 则 key 为 POJO 类名第一个字母的小写  
  
  
     \* 2). 若使用了  @ModelAttribute 来修饰, 则 key 为 @ModelAttribute 注解的 value 属性值.  
  
  
     \* 2. 在 implicitModel 中查找 key 对应的对象, 若存在, 则作为入参传入  
  
  
     \* 1). 若在 @ModelAttribute 标记的方法中在 Map 中保存过, 且 key 和 1 确定的 key 一致, 则会获取到.  
  
  
     \* 3. 若 implicitModel 中不存在 key 对应的对象, 则检查当前的 Handler 是否使用 @SessionAttributes 注解修饰,  
  
  
     \* 若使用了该注解, 且 @SessionAttributes 注解的 value 属性值中包含了 key, 则会从 HttpSession 中来获取 key 所  
  
  
     \* 对应的 value 值, 若存在则直接传入到目标方法的入参中. 若不存在则将抛出异常.  
  
  
     \* 4. 若 Handler 没有标识 @SessionAttributes 注解或 @SessionAttributes 注解的 value 值中不包含 key, 则  
  
  
     \* 会通过反射来创建 POJO 类型的参数, 传入为目标方法的参数  
  
  
     \* 5. SpringMVC 会把 key 和 POJO 类型的对象保存到 implicitModel 中, 进而会保存到 request 中.  
  
  
     \*  
  
  
     \* 源代码分析的流程  
  
  
     \* 1. 调用 @ModelAttribute 注解修饰的方法. 实际上把 @ModelAttribute 方法中 Map 中的数据放在了 implicitModel 中.  
  
  
     \* 2. 解析请求处理器的目标参数, 实际上该目标参数来自于 WebDataBinder 对象的 target 属性  
  
  
     \* 1). 创建 WebDataBinder 对象:  
  
  
     \* ①. 确定 objectName 属性: 若传入的 attrName 属性值为 "", 则 objectName 为类名第一个字母小写.  
  
  
     \* \*注意: attrName. 若目标方法的 POJO 属性使用了 @ModelAttribute 来修饰, 则 attrName 值即为 @ModelAttribute  
  
  
     \* 的 value 属性值  
  
  
     \*  
  
  
     \* ②. 确定 target 属性:  
  
  
     \*  > 在 implicitModel 中查找 attrName 对应的属性值. 若存在, ok  
  
  
     \*  > \*若不存在: 则验证当前 Handler 是否使用了 @SessionAttributes 进行修饰, 若使用了, 则尝试从 Session 中  
  
  
     \* 获取 attrName 所对应的属性值. 若 session 中没有对应的属性值, 则抛出了异常.  
  
  
     \*  > 若 Handler 没有使用 @SessionAttributes 进行修饰, 或 @SessionAttributes 中没有使用 value 值指定的 key  
  
  
     \* 和 attrName 相匹配, 则通过反射创建了 POJO 对象  
  
  
     \*  
  
  
     \* 2). SpringMVC 把表单的请求参数赋给了 WebDataBinder 的 target 对应的属性.  
  
  
     \* 3). \*SpringMVC 会把 WebDataBinder 的 attrName 和 target 给到 implicitModel.  
  
  
     \* 近而传到 request 域对象中.  
  
  
     \* 4). 把 WebDataBinder 的 target 作为参数传递给目标方法的入参.  
  
  
     \*/  
  
  
    @RequestMapping("/testModelAttribute")  
  
  
    public String testModelAttribute(User user)\{  
  
  
        System.out.println("修改: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* @SessionAttributes 除了可以通过属性名指定需要放到会话中的属性外(实际上使用的是 value 属性值),  
  
  
     \* 还可以通过模型属性的对象类型指定哪些模型属性需要放到会话中(实际上使用的是 types 属性值)  
  
  
     \*  
  
  
     \* 注意: 该注解只能放在类的上面. 而不能修饰放方法.  
  
  
     \*/  
  
  
@SessionAttributes  
  
  
    @RequestMapping("/testSessionAttributes")  
  
  
    public String testSessionAttributes(Map<String, Object> map)\{  
  
  
        User user = new User("Tom", "123456", "tom@atguigu.com", 15);  
  
  
        map.put("user", user);  
  
  
        map.put("school", "atguigu");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法可以添加 Map 类型(实际上也可以是 Model 类型或 ModelMap 类型)的参数.  
  
  
     \* @param map  
  
  
     \* @return  
  
  
     \*/  
  
  
Map  
  
  
    @RequestMapping("/testMap")  
  
  
    public String testMap(Map<String, Object> map)\{  
  
  
        System.out.println(map.getClass().getName());  
  
  
        map.put("names", Arrays.asList("Tom", "Jerry", "Mike"));  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法的返回值可以是 ModelAndView 类型。  
  
  
     \* 其中可以包含视图和模型信息  
  
  
     \* SpringMVC 会把 ModelAndView 的 model 中数据放入到 request 域对象中.  
  
  
     \* @return  
  
  
     \*/  
  
  
ModelAndView  
  
  
    @RequestMapping("/testModelAndView")  
  
  
    public ModelAndView testModelAndView()\{  
  
  
        String viewName = SUCCESS;  
  
  
        ModelAndView modelAndView = new ModelAndView(viewName);  
  
  
         
  
  
        //添加模型数据到 ModelAndView 中.  
  
  
        modelAndView.addObject("time", new Date());  
  
  
         
  
  
        return modelAndView;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 可以使用 Serlvet 原生的 API 作为目标方法的参数 具体支持以下类型  
  
  
     \*  
  
  
     \* HttpServletRequest  
  
  
     \* HttpServletResponse  
  
  
     \* HttpSession  
  
  
     \* java.security.Principal  
  
  
     \* Locale InputStream  
  
  
     \* OutputStream  
  
  
     \* Reader  
  
  
     \* Writer  
  
  
     \* @throws IOException  
  
  
     \*/  
  
  
ServletAPI  
  
  
    @RequestMapping("/testServletAPI")  
  
  
    public void testServletAPI(HttpServletRequest request,  
  
  
            HttpServletResponse response, Writer out) throws IOException \{  
  
  
        System.out.println("testServletAPI, " + request + ", " + response);  
  
  
        out.write("hello springmvc");  
  
  
//      return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* Spring MVC 会按请求参数名和 POJO 属性名进行自动匹配， 自动为该对象填充属性值。支持级联属性。  
  
  
     \* 如：dept.deptId、dept.address.tel 等  
  
  
     \*/  
  
  
Pojo  
  
  
    @RequestMapping("/testPojo")  
  
  
    public String testPojo(User user) \{  
  
  
        System.out.println("testPojo: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解:  
  
  
     \*  
  
  
     \* @CookieValue: 映射一个 Cookie 值. 属性同 @RequestParam  
  
  
     \*/  
  
  
@CookieValue  
  
  
    @RequestMapping("/testCookieValue")  
  
  
    public String testCookieValue(@CookieValue("JSESSIONID") String sessionId) \{  
  
  
        System.out.println("testCookieValue: sessionId: " + sessionId);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 映射请求头信息 用法同 @RequestParam  
  
  
     \*/  
  
  
@RequestHeader  
  
  
    @RequestMapping("/testRequestHeader")  
  
  
    public String testRequestHeader(  
  
  
            @RequestHeader(value = "Accept-Language") String al) \{  
  
  
        System.out.println("testRequestHeader, Accept-Language: " + al);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @RequestParam 来映射请求参数.  
  
  
     \* value 值即请求参数的参数名  
  
  
     \* required 该参数是否必须. 默认为 true  
  
  
     \* defaultValue 请求参数的默认值  
  
  
     \*/  
  
  
@RequestParam  
  
  
    @RequestMapping(value = "/testRequestParam")  
  
  
    public String testRequestParam(  
  
  
            @RequestParam(value = "username") String un,  
  
  
            @RequestParam(value = "age", required = false, defaultValue = "0") int age) \{  
  
  
        System.out.println("testRequestParam, username: " + un + ", age: "  
  
  
                + age);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* Rest 风格的 URL. 以 CRUD 为例:  
  
  
     \* 新增: /order POST  
  
  
     \* 修改: /order/1 PUT update?id=1  
  
  
     \* 获取: /order/1 GET get?id=1  
  
  
     \* 删除: /order/1 DELETE delete?id=1  
  
  
     \*  
  
  
     \* 如何发送 PUT 请求和 DELETE 请求呢 ?  
  
  
     \* 1. 需要配置 HiddenHttpMethodFilter  
  
  
     \* 2. 需要发送 POST 请求  
  
  
     \* 3. 需要在发送 POST 请求时携带一个 name="\_method" 的隐藏域, 值为 DELETE 或 PUT  
  
  
     \*  
  
  
     \* 在 SpringMVC 的目标方法中如何得到 id 呢? 使用 @PathVariable 注解  
  
  
     \*  
  
  
     \*/  
  
  
     
  
  
REST 改  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.PUT)  
  
  
    public String testRestPut(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Put: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 删  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.DELETE)  
  
  
    public String testRestDelete(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Delete: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 增  
  
  
    @RequestMapping(value = "/testRest", method = RequestMethod.POST)  
  
  
    public String testRest() \{  
  
  
        System.out.println("testRest POST");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 查  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.GET)  
  
  
    public String testRest(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest GET: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @PathVariable 可以来映射 URL 中的占位符到目标方法的参数中.  
  
  
     \* @param id  
  
  
     \* @return  
  
  
     \*/  
  
  
@PathVariable  
  
  
    @RequestMapping("/testPathVariable/\{id\}")  
  
  
    public String testPathVariable(@PathVariable("id") Integer id) \{  
  
  
        System.out.println("testPathVariable: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
@RequestMapping – URL  
  
  
    @RequestMapping("/testAntPath/\*/abc")  
  
  
    public String testAntPath() \{  
  
  
        System.out.println("testAntPath");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 可以使用 params 和 headers 来更加精确的映射请求. params 和 headers 支持简单的表达式.  
  
  
     \* 如果params不符合条件, 则无法访问页面  
  
  
     \* 如果headers不符合条件, 则无法访问页面  
  
  
     \*  
  
  
     \*  
  
  
     \* @return  
  
  
     \*/  
  
  
@RequestMapping – params - headers  
  
  
    @RequestMapping(value = "testParamsAndHeaders", params = \{ "username",  
  
  
            "age!=10" \}, headers = \{ "Accept-Language=zh-CN,zh;q=0.8,en;q=0.6,zh-TW;q=0.4" \})  
  
  
    public String testParamsAndHeaders() \{  
  
  
        System.out.println("testParamsAndHeaders");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 常用: 使用 method 属性来指定请求方式  
  
  
     \* <a href="" /> 通常为get  
  
  
     \*/  
  
  
@RequestMapping - method  
  
  
    @RequestMapping(value = "/testMethod", method = RequestMethod.POST)  
  
  
    public String testMethod() \{  
  
  
        System.out.println("testMethod");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 1. @RequestMapping 除了修饰方法, 还可来修饰类 2. 1). 类定义处: 提供初步的请求映射信息。相对于 WEB 应用的根目录  
  
  
     \* 2). 方法处: 提供进一步的细分映射信息。 相对于类定义处的 URL。若类定义处未标注 @RequestMapping，则方法处标记的 URL  
  
  
     \* 相对于 WEB 应用的根目录  
  
  
     \*/  
  
  
@RequestMapping  
  
  
    @RequestMapping("/testRequestMapping")  
  
  
    public String testRequestMapping() \{  
  
  
        System.out.println("testRequestMapping");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="springmvc/testRedirect">Test Redirect</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testView">Test View</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testViewAndViewResolver">Test ViewAndViewResolver</a>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
ModelAttribute  
  
  
    <form action="springmvc/testModelAttribute" method="Post">  
  
  
        <input type="hidden" name="id" value="1"/>  
  
  
        username: <input type="text" name="username" value="Tom"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email" value="tom@atguigu.com"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age" value="12"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
SessionAttributes  
  
  
    <a href="springmvc/testSessionAttributes">Test SessionAttributes</a>  
  
  
    <br><br>  
  
  
Map  
  
  
    <a href="springmvc/testMap">Test Map</a>  
  
  
    <br><br>  
  
  
ModelAndView  
  
  
    <a href="springmvc/testModelAndView">Test ModelAndView</a>  
  
  
    <br><br>  
  
  
ServletAPI  
  
  
    <a href="springmvc/testServletAPI">Test ServletAPI</a>  
  
  
    <br><br>  
  
  
Pojo  
  
  
    <form action="springmvc/testPojo" method="post">  
  
  
        username: <input type="text" name="username"/>  
  
  
        <br>  
  
  
        password: <input type="password" name="password"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age"/>  
  
  
        <br>  
  
  
        city: <input type="text" name="address.city"/>  
  
  
        <br>  
  
  
        province: <input type="text" name="address.province"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
CookieValue  
  
  
    <a href="springmvc/testCookieValue">Test CookieValue</a>  
  
  
    <br><br>  
  
  
RequestHeader  
  
  
    <a href="springmvc/testRequestHeader">Test RequestHeader</a>  
  
  
    <br><br>  
  
  
RequestParam  
  
  
    <a href="springmvc/testRequestParam?username=atguigu&age=11">Test RequestParam</a>  
  
  
    <br><br>  
  
  
REST 改  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="PUT"/>  
  
  
        <input type="submit" value="TestRest PUT"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 删  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
        <input type="submit" value="TestRest DELETE"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 增  
  
  
    <form action="springmvc/testRest" method="post">  
  
  
        <input type="submit" value="TestRest POST"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 查  
  
  
    <a href="springmvc/testRest/1">Test Rest Get</a>  
  
  
    <br><br>  
  
  
@PathVariable  
  
  
    <a href="springmvc/testPathVariable/1">Test PathVariable</a>  
  
  
    <br><br>  
  
  
@RequestMapping – URL  
  
  
    <a href="springmvc/testAntPath/mnxyz/abc">Test AntPath</a>  
  
  
    <br><br>  
  
  
@RequestMapping – params - headers  
  
  
    <a href="springmvc/testParamsAndHeaders?username=atguigu&age=10">Test ParamsAndHeaders</a>  
  
  
    <br><br>  
  
  
@RequestMapping - method  
  
  
    <form action="springmvc/testMethod" method="POST">  
  
  
        <input type="submit" value="submit"/>  
  
  
    </form>  
  
  
   
  
  
    <br><br>  
  
  
    <a href="springmvc/testMethod">Test Method</a>  
  
  
@RequestMapping  
  
  
    <br><br>  
  
  
    <a href="springmvc/testRequestMapping">Test RequestMapping</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="helloworld">Hello World</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Sucess Page</h4>  
  
  
     
  
  
    time: $\{requestScope.time \}  
  
  
    <br><br>  
  
  
     
  
  
    names: $\{requestScope.names \}  
  
  
    <br><br>  
  
  
     
  
  
    request user: $\{requestScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    session user: $\{sessionScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    request school: $\{requestScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    session school: $\{sessionScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    abc user: $\{requestScope.abc \}  
  
  
    <br><br>  
  
  
     
  
  
    mnxyz user: $\{requestScope.mnxyz \}  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.username"></fmt:message>  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
    <br><br>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
HelloView.java  
  
  
package com.atguigu.springmvc.views;  
  
  
   
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
import org.springframework.stereotype.Component;  
  
  
import org.springframework.web.servlet.View;  
  
  
   
  
  
//自定义的view, 需要在XML中配置BeanNameViewResolver  
  
  
@Component    //把view 放到ioc 容器里面  
  
  
public class HelloView implements View\{  
  
  
   
  
  
    @Override  
  
  
    public String getContentType() \{  
  
  
        return "text/html";  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public void render(Map<String, ?> model, HttpServletRequest request,  
  
  
            HttpServletResponse response) throws Exception \{  
  
  
        response.getWriter().print("hello view, time: " + new Date());  
  
  
    \}  
  
  
\}  
  
  
   
  
  
\------------ springmvc-2 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
   
  
  
      
  
  
      
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
      
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
      
  
  
    <filter>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
  
  
    </filter>  
  
  
     
  
  
    <filter-mapping>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <url-pattern>/\*</url-pattern>  
  
  
    </filter-mapping>  
  
  
   
  
  
</web-app>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
      
  
  
  
  
  
<!—如果加了这个,没有配置 annotation-driven 的话那requestmapping就不能用了 -->  
  
  
<mvc:default-servlet-handler/>    
  
  
配置 annotation-driven  
  
  
      
  
  
  
  
  
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>   
  
  
     
  
  
配置 ConversionService注册自定义格式转换器  
  
  
       
  
  
    <bean id="conversionService"  
  
  
        class="org.springframework.format.support.FormattingConversionServiceFactoryBean">  
  
  
        <property name="converters">  
  
  
            <set>  
  
  
                <ref bean="employeeConverter"/>  
  
  
            </set>  
  
  
        </property>  
  
  
    </bean>  
  
  
     
  
  
配置国际化资源文件  
  
  
      
  
  
    <bean id="messageSource"  
  
  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
  
  
        <property name="basename" value="i18n"></property>  
  
  
    </bean>  
  
  
     
  
  
配置 SessionLocalResolver, 用于把locale存放到session中  
  
  
      
  
  
    <bean id="localeResolver"  
  
  
        class="org.springframework.web.servlet.i18n.SessionLocaleResolver">  
  
  
</bean>  
  
  
     
  
  
配置自定义的拦截器interceptors  
  
  
<mvc:interceptors>  
  
  
配置自定义的拦截器FirstInterceptor  
  
  
          
  
  
        <bean class="com.atguigu.springmvc.interceptors.FirstInterceptor"></bean>  
  
  
         
  
  
配置拦截器(不)作用的路径SecondInterceptor  
  
  
          
  
  
        <mvc:interceptor>  
  
  
            <mvc:mapping path="/emps"/>  
  
  
            <bean class="com.atguigu.springmvc.interceptors.SecondInterceptor"></bean>  
  
  
        </mvc:interceptor>  
  
  
         
  
  
LocaleChangeInterceptor – i18n 国际化  
  
  
          
  
  
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"></bean>  
  
  
    </mvc:interceptors>  
  
  
     
  
  
配置 view-controller – i18n  
  
  
      
  
  
    <mvc:view-controller path="/i18n2" view-name="i18n2"/>    
  
  
     
  
  
配置 MultipartResolver – 文件上传  
  
  
      
  
  
    <bean id="multipartResolver"  
  
  
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
  
  
        <property name="defaultEncoding" value="UTF-8"></property>  
  
  
        <property name="maxUploadSize" value="1024000"></property>   
  
  
    </bean>  
  
  
     
  
  
配置使用 SimpleMappingExceptionResolver 来映射异常  
  
  
      
  
  
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">  
  
  
        <property name="exceptionAttribute" value="ex"></property>  
  
  
        <property name="exceptionMappings">  
  
  
            <props>  
  
  
                <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>  
  
  
  
  
  
            </props>  
  
  
        </property>  
  
  
    </bean>  
  
  
         
  
  
</beans>  
  
  
EmployeeHandler.java  
  
  
package com.atguigu.springmvc.crud.handlers;  
  
  
   
  
  
import java.util.Map;  
  
  
   
  
  
import javax.validation.Valid;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.validation.Errors;  
  
  
import org.springframework.validation.FieldError;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.DepartmentDao;  
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class EmployeeHandler \{  
  
  
   
  
  
@Autowired  
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getEmployee(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        if(id != null)\{  
  
  
            map.put("employee", employeeDao.get(id));  
  
  
        \}  
  
  
    \}  
  
  
改  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.PUT)  
  
  
    public String update(Employee employee)\{  
  
  
        employeeDao.save(employee);  
  
  
         
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
查  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.GET)  
  
  
    public String input(@PathVariable("id") Integer id, Map<String, Object> map)\{  
  
  
        map.put("employee", employeeDao.get(id));  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        return "input";  
  
  
    \}  
  
  
删  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.DELETE)  
  
  
    public String delete(@PathVariable("id") Integer id)\{  
  
  
        employeeDao.delete(id);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
增 @Valid/BindingResult/Errors  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.POST)  
  
  
    public String save(@Valid Employee employee, Errors result,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("save: " + employee);  
  
  
         
  
  
        if(result.getErrorCount() > 0)\{  
  
  
            System.out.println("出错了!");  
  
  
             
  
  
            for(FieldError error:result.getFieldErrors())\{  
  
  
                System.out.println(error.getField() + ":" + error.getDefaultMessage());  
  
  
            \}  
  
  
             
  
  
            //若验证出错, 则转向定制的页面  
  
  
            map.put("departments", departmentDao.getDepartments());  
  
  
            return "input";  
  
  
        \}  
  
  
         
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
显示添加员工页面  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.GET)  
  
  
    public String input(Map<String, Object> map)\{  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        map.put("employee", new Employee()); // 此处必须添加new Employee()到map中才能显示input.jsp  
  
  
        return "input";  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/emps")  
  
  
    public String list(Map<String, Object> map)\{  
  
  
        map.put("employees", employeeDao.getAll());  
  
  
        return "list";  
  
  
    \}  
  
  
     
  
  
    //设置lastName不进行赋值  
  
  
//  @InitBinder  
  
  
//  public void initBinder(WebDataBinder binder)\{  
  
  
//      binder.setDisallowedFields("lastName");  
  
  
//  \}  
  
  
     
  
  
\}  
  
  
   
  
  
SpringMVCTest.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.InputStream;  
  
  
import java.util.Collection;  
  
  
import java.util.Date;  
  
  
import java.util.Locale;  
  
  
import java.util.Map;  
  
  
import javax.servlet.ServletContext;  
  
  
import javax.servlet.http.HttpSession;  
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.context.support.ResourceBundleMessageSource;  
  
  
import org.springframework.http.HttpHeaders;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.http.ResponseEntity;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.bind.annotation.RequestBody;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.ResponseBody;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
import org.springframework.web.multipart.MultipartFile;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
ResourceBundleMessageSource 国际化资源信息获取  
  
  
    @Autowired  
  
  
    private ResourceBundleMessageSource messageSource;  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    @RequestMapping("/testSimpleMappingExceptionResolver")  
  
  
    public String testSimpleMappingExceptionResolver(@RequestParam("i") int i)\{  
  
  
        String \[\] vals = new String\[10\];  
  
  
        System.out.println(vals\[i\]);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    @RequestMapping(value="/testDefaultHandlerExceptionResolver",method=RequestMethod.POST)  
  
  
    public String testDefaultHandlerExceptionResolver()\{  
  
  
        System.out.println("testDefaultHandlerExceptionResolver...");  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
ResponseStatusExceptionResolver @ResponseStatus  
  
  
@ResponseStatus(reason="测试",value=HttpStatus.NOT\_FOUND)  
  
  
//如果在方法上加这个注解,则无论i是什么都会抛出异常  
  
  
//如果在类上加这个注解,则i=13时抛出异常  
  
  
    @RequestMapping("/testResponseStatusExceptionResolver")  
  
  
    public String testResponseStatusExceptionResolver(@RequestParam("i") int i)\{  
  
  
        if(i == 13)\{  
  
  
            throw new UserNameNotMatchPasswordException();  
  
  
        \}  
  
  
        System.out.println("testResponseStatusExceptionResolver...");  
  
  
         
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
handleArithmeticException, @ExceptionHandler  
  
  
//  @ExceptionHandler(\{RuntimeException.class\})  
  
  
//  public ModelAndView handleArithmeticException2(Exception ex)\{  
  
  
//      System.out.println("\[出异常了\]: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 1. 在 @ExceptionHandler 方法的入参中可以加入 Exception 类型的参数, 该参数即对应发生的异常对象  
  
  
     \* 2. @ExceptionHandler 方法的入参中不能传入 Map. 若希望把异常信息传导页面上, 需要使用 ModelAndView 作为返回值  
  
  
     \* 3. @ExceptionHandler 方法标记的异常有优先级的问题.  
  
  
     \* 4. @ControllerAdvice: 如果在当前 Handler 中找不到 @ExceptionHandler 方法来出来当前方法出现的异常,  
  
  
     \* 则将去 @ControllerAdvice 标记的类中查找 @ExceptionHandler 标记的方法来处理异常.  
  
  
     \*/  
  
  
//  @ExceptionHandler(\{ArithmeticException.class\})  
  
  
//  public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
//      System.out.println("出异常了: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    @RequestMapping("/testExceptionHandlerExceptionResolver")  
  
  
    public String testExceptionHandlerExceptionResolver(@RequestParam("i") int i)\{  
  
  
        System.out.println("result: " + (10 / i));  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
FileUpload  
  
  
    @RequestMapping("/testFileUpload")  
  
  
    public String testFileUpload(@RequestParam("desc") String desc,  
  
  
            @RequestParam("file") MultipartFile file) throws IOException\{  
  
  
        System.out.println("desc: " + desc);  
  
  
        System.out.println("OriginalFilename: " + file.getOriginalFilename());  
  
  
        System.out.println("InputStream: " + file.getInputStream());  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
国际化 i18n  
  
  
    @RequestMapping("/i18n")  
  
  
    public String testI18n(Locale locale)\{  
  
  
        String val = messageSource.getMessage("i18n.user", null, locale);  
  
  
        System.out.println(val);  
  
  
        return "i18n";  
  
  
    \}  
  
  
     
  
  
ResponseEntity  
  
  
    @RequestMapping("/testResponseEntity")  
  
  
    public ResponseEntity<byte\[\]> testResponseEntity(HttpSession session) throws IOException\{  
  
  
        byte \[\] body = null;  
  
  
        ServletContext servletContext = session.getServletContext();  
  
  
        InputStream in = servletContext.getResourceAsStream("/files/abc.txt");  
  
  
        body = new byte\[in.available()\];  
  
  
        in.read(body);  
  
  
         
  
  
        HttpHeaders headers = new HttpHeaders();  
  
  
        headers.add("Content-Disposition", "attachment;filename=abc.txt");  
  
  
         
  
  
        HttpStatus statusCode = HttpStatus.OK;  
  
  
         
  
  
        ResponseEntity<byte\[\]> response = new ResponseEntity<byte\[\]>(body, headers, statusCode);  
  
  
        return response;  
  
  
    \}  
  
  
     
  
  
HttpMessageConverter  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testHttpMessageConverter")  
  
  
    public String testHttpMessageConverter(@RequestBody String body)\{  
  
  
        System.out.println(body);  
  
  
        return "helloworld! " + new Date();  
  
  
    \}  
  
  
     
  
  
@ResponseBody – 处理Jason数据  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testJson")  
  
  
    public Collection<Employee> testJson()\{  
  
  
        return employeeDao.getAll();  
  
  
    \}  
  
  
     
  
  
ConversionService Converer  
  
  
    @RequestMapping("/testConversionServiceConverer")  
  
  
    public String testConverter(@RequestParam("employee") Employee employee)\{  
  
  
        System.out.println("save: " + employee);  
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
list.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
删  
  
  
<!—此处用于将delete请求转换为 post 请求-->  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $(".delete").click(function()\{  
  
  
            var href = $(this).attr("href");  
  
  
            $("form").attr("action", href).submit();             
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
删  
  
  
    <!—此处用于将delete请求转换为 post 请求-->  
  
  
    <form action="" method="POST">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
    </form>  
  
  
     
  
  
    <c:if test="$\{empty requestScope.employees \}">  
  
  
        没有任何员工信息.  
  
  
    </c:if>  
  
  
    <c:if test="$\{!empty requestScope.employees \}">  
  
  
        <table border="1" cellpadding="10" cellspacing="0">  
  
  
            <tr>  
  
  
                <th>ID</th>  
  
  
                <th>LastName</th>  
  
  
                <th>Email</th>  
  
  
                <th>Gender</th>  
  
  
                <th>Department</th>  
  
  
                <th>Edit</th>  
  
  
                <th>Delete</th>  
  
  
            </tr>  
  
  
             
  
  
            <c:forEach items="$\{requestScope.employees \}" var="emp">  
  
  
                <tr>  
  
  
                    <td>$\{emp.id \}</td>  
  
  
                    <td>$\{emp.lastName \}</td>  
  
  
                    <td>$\{emp.email \}</td>  
  
  
                    <td>$\{emp.gender == 0 ? ‘Female‘ : ‘Male‘ \}</td>  
  
  
                    <td>$\{emp.department.departmentName \}</td>  
  
  
改  
  
  
                    <td><a href="emp/$\{emp.id\}">Edit</a></td>  
  
  
删  
  
  
                    <td><a class="delete" href="emp/$\{emp.id\}">Delete</a></td>  
  
  
                    
  
  
                </tr>  
  
  
            </c:forEach>  
  
  
        </table>  
  
  
    </c:if>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emp">Add New Employee</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
input.jsp  
  
  
Errors  
  
  
Hidden  
  
  
input  
  
  
radiobuttons  
  
  
select  
  
  
   
  
  
<%@page import="java.util.HashMap"%>  
  
  
<%@page import="java.util.Map"%>  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
测试字符串格式添加用户converter  
  
  
    <form action="testConversionServiceConverer" method="POST">  
  
  
          
  
  
        Employee: <input type="text" name="employee"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
增  
  
  
<form:form action="$\{pageContext.request.contextPath \}/emp" method="POST"  
  
  
        modelAttribute="employee">  
  
  
         
  
  
        <form:errors path="\*"></form:errors>  
  
  
        <br>  
  
  
         
  
  
        <c:if test="$\{employee.id == null \}">  
  
  
              
  
  
            LastName: <form:input path="lastName"/>  
  
  
            <form:errors path="lastName"></form:errors>  
  
  
        </c:if>  
  
  
        <c:if test="$\{employee.id != null \}">  
  
  
            <form:hidden path="id"/>  
  
  
            <input type="hidden" name="\_method" value="PUT"/>  
  
  
            <%-- 对于 \_method 不能使用 form:hidden 标签, 因为 modelAttribute 对应的 bean 中没有 \_method 这个属性 --%>  
  
  
            <%--  
  
  
            <form:hidden path="\_method" value="PUT"/>  
  
  
            --%>  
  
  
        </c:if>  
  
  
         
  
  
        <br>  
  
  
        Email: <form:input path="email"/>  
  
  
        <form:errors path="email"></form:errors>  
  
  
        <br>  
  
  
        <%  
  
  
            Map<String, String> genders = new HashMap();  
  
  
            genders.put("1", "Male");  
  
  
            genders.put("0", "Female");  
  
  
             
  
  
            request.setAttribute("genders", genders);  
  
  
        %>  
  
  
        Gender:  
  
  
        <br>  
  
  
        <form:radiobuttons path="gender" items="$\{genders \}" delimiter="<br>"/>  
  
  
        <br>  
  
  
        Department: <form:select path="department.id"  
  
  
            items="$\{departments \}" itemLabel="departmentName" itemValue="id"></form:select>  
  
  
        <br>  
  
  
          
  
  
         
  
  
        Birth: <form:input path="birth"/>  
  
  
        <form:errors path="birth"></form:errors>  
  
  
        <br>  
  
  
        Salary: <form:input path="salary"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form:form>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $("\#testJson").click(function()\{  
  
  
            var url = this.href;  
  
  
            var args = \{\};  
  
  
            $.post(url, args, function(data)\{  
  
  
                for(var i = 0; i < data.length; i++)\{  
  
  
                    var id = data\[i\].id;  
  
  
                    var lastName = data\[i\].lastName;  
  
  
                      
  
  
                    alert(id + ": " + lastName);  
  
  
                \}  
  
  
            \});  
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
FileUpload 文件上传  
  
  
    <form action="testFileUpload" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emps">List All Employees</a>  
  
  
    <br><br>  
  
  
     
  
  
testJson  
  
  
    <a href="testJson" id="testJson">Test Json</a>  
  
  
    <br><br>  
  
  
     
  
  
HttpMessageConverter 文件上传  
  
  
    <form action="testHttpMessageConverter" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
ResponseEntity  
  
  
    <a href="testResponseEntity">Test ResponseEntity</a>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testExceptionHandlerExceptionResolver?i=10">Test ExceptionHandlerExceptionResolver</a>  
  
  
     
  
  
ResponseStatusExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testResponseStatusExceptionResolver?i=10">Test ResponseStatusExceptionResolver</a>  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testDefaultHandlerExceptionResolver">Test DefaultHandlerExceptionResolver</a>  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testSimpleMappingExceptionResolver?i=2">Test SimpleMappingExceptionResolver</a>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
i18n.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
Fmt 标签  
  
  
    <fmt:message key="i18n.user"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n2">I18N2 PAGE</a>  
  
  
     
  
  
Locale , 实现中英文切换效果,  
  
  
需配置解析器SessionLocalResolver  
  
  
和配置拦截器LocaleChangeInterceptor  
  
  
    <br><br>  
  
  
    <a href="i18n?locale=zh\_CH">中文</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n?locale=en\_US">英文</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
i18n2.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
error.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Error Page</h4>  
  
  
    $\{requestScope.exception \}  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
EmployeeConverter.java  
  
  
package com.atguigu.springmvc.converters;  
  
  
   
  
  
import org.springframework.core.convert.converter.Converter;  
  
  
import org.springframework.stereotype.Component;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Component  
  
  
@Component  
  
  
public class EmployeeConverter implements Converter<String, Employee> \{  
  
  
//string 转为 Employee  
  
  
convert  
  
  
    @Override  
  
  
    public Employee convert(String source) \{  
  
  
        if(source != null)\{  
  
  
            String \[\] vals = source.split("-");  
  
  
            //GG-gg@atguigu.com-0-105  
  
  
            if(vals != null && vals.length == 4)\{  
  
  
                String lastName = vals\[0\];  
  
  
                String email = vals\[1\];  
  
  
                Integer gender = Integer.parseInt(vals\[2\]);  
  
  
                Department department = new Department();  
  
  
                department.setId(Integer.parseInt(vals\[3\]));  
  
  
                 
  
  
                Employee employee = new Employee(null, lastName, email, gender, department);  
  
  
                System.out.println(source + "--convert--" + employee);  
  
  
                return employee;  
  
  
            \}  
  
  
        \}  
  
  
        return null;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
DepartmentDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
   
  
  
@Repository  
  
  
public class DepartmentDao \{  
  
  
   
  
  
    private static Map<Integer, Department> departments = null;  
  
  
     
  
  
    static\{  
  
  
        departments = new HashMap<Integer, Department>();  
  
  
         
  
  
        departments.put(101, new Department(101, "D-AA"));  
  
  
        departments.put(102, new Department(102, "D-BB"));  
  
  
        departments.put(103, new Department(103, "D-CC"));  
  
  
        departments.put(104, new Department(104, "D-DD"));  
  
  
        departments.put(105, new Department(105, "D-EE"));  
  
  
    \}  
  
  
     
  
  
    public Collection<Department> getDepartments()\{  
  
  
        return departments.values();  
  
  
    \}  
  
  
     
  
  
    public Department getDepartment(Integer id)\{  
  
  
        return departments.get(id);  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
EmployeeDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Repository  
  
  
public class EmployeeDao \{  
  
  
   
  
  
    private static Map<Integer, Employee> employees = null;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
     
  
  
    static\{  
  
  
        employees = new HashMap<Integer, Employee>();  
  
  
   
  
  
        employees.put(1001, new Employee(1001, "E-AA", "aa@163.com", 1, new Department(101, "D-AA")));  
  
  
        employees.put(1002, new Employee(1002, "E-BB", "bb@163.com", 1, new Department(102, "D-BB")));  
  
  
        employees.put(1003, new Employee(1003, "E-CC", "cc@163.com", 0, new Department(103, "D-CC")));  
  
  
        employees.put(1004, new Employee(1004, "E-DD", "dd@163.com", 0, new Department(104, "D-DD")));  
  
  
        employees.put(1005, new Employee(1005, "E-EE", "ee@163.com", 1, new Department(105, "D-EE")));  
  
  
    \}  
  
  
     
  
  
    private static Integer initId = 1006;  
  
  
     
  
  
    public void save(Employee employee)\{  
  
  
        if(employee.getId() == null)\{  
  
  
            employee.setId(initId++);  
  
  
        \}  
  
  
         
  
  
        employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));  
  
  
        employees.put(employee.getId(), employee);  
  
  
    \}  
  
  
     
  
  
    public Collection<Employee> getAll()\{  
  
  
        return employees.values();  
  
  
    \}  
  
  
     
  
  
    public Employee get(Integer id)\{  
  
  
        return employees.get(id);  
  
  
    \}  
  
  
     
  
  
    public void delete(Integer id)\{  
  
  
        employees.remove(id);  
  
  
    \}  
  
  
\}  
  
  
Employee.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
import java.util.Date;  
  
  
import javax.validation.constraints.Past;  
  
  
import org.hibernate.validator.constraints.Email;  
  
  
import org.hibernate.validator.constraints.NotEmpty;  
  
  
import org.springframework.format.annotation.DateTimeFormat;  
  
  
import org.springframework.format.annotation.NumberFormat;  
  
  
   
  
  
public class Employee \{  
  
  
   
  
  
private Integer id;  
  
  
@NotEmpty  
  
  
    @NotEmpty  
  
  
    private String lastName;  
  
  
@Emai  
  
  
    @Email  
  
  
    private String email;  
  
  
    //1 male, 0 female  
  
  
    private Integer gender;  
  
  
     
  
  
    private Department department;  
  
  
@Past  
  
  
@DateTimeFormat  
  
  
    @Past  
  
  
    @DateTimeFormat(pattern="yyyy-MM-dd")  
  
  
    private Date birth;  
  
  
@NumberFormat  
  
  
    @NumberFormat(pattern="\#,\#\#\#,\#\#\#.\#")  
  
  
    private Float salary;  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getLastName() \{  
  
  
        return lastName;  
  
  
    \}  
  
  
   
  
  
    public void setLastName(String lastName) \{  
  
  
        this.lastName = lastName;  
  
  
    \}  
  
  
   
  
  
    public String getEmail() \{  
  
  
        return email;  
  
  
    \}  
  
  
   
  
  
    public void setEmail(String email) \{  
  
  
        this.email = email;  
  
  
    \}  
  
  
   
  
  
    public Integer getGender() \{  
  
  
        return gender;  
  
  
    \}  
  
  
   
  
  
    public void setGender(Integer gender) \{  
  
  
        this.gender = gender;  
  
  
    \}  
  
  
   
  
  
    public Department getDepartment() \{  
  
  
        return department;  
  
  
    \}  
  
  
   
  
  
    public void setDepartment(Department department) \{  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Date getBirth() \{  
  
  
        return birth;  
  
  
    \}  
  
  
   
  
  
    public void setBirth(Date birth) \{  
  
  
        this.birth = birth;  
  
  
    \}  
  
  
   
  
  
    public Float getSalary() \{  
  
  
        return salary;  
  
  
    \}  
  
  
   
  
  
    public void setSalary(Float salary) \{  
  
  
        this.salary = salary;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Employee \[id=" + id + ", lastName=" + lastName + ", email="  
  
  
                + email + ", gender=" + gender + ", department=" + department  
  
  
                + ", birth=" + birth + ", salary=" + salary + "\]";  
  
  
    \}  
  
  
   
  
  
    public Employee(Integer id, String lastName, String email, Integer gender,  
  
  
            Department department) \{  
  
  
        super();  
  
  
        this.id = id;  
  
  
        this.lastName = lastName;  
  
  
        this.email = email;  
  
  
        this.gender = gender;  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Employee() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
\}  
  
  
Department.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
   
  
  
public class Department \{  
  
  
   
  
  
    private Integer id;  
  
  
    private String departmentName;  
  
  
   
  
  
    public Department() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
     
  
  
    public Department(int i, String string) \{  
  
  
        this.id = i;  
  
  
        this.departmentName = string;  
  
  
    \}  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getDepartmentName() \{  
  
  
        return departmentName;  
  
  
    \}  
  
  
   
  
  
    public void setDepartmentName(String departmentName) \{  
  
  
        this.departmentName = departmentName;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Department \[id=" + id + ", departmentName=" + departmentName  
  
  
                + "\]";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
i18n.properties  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
i18n\_zh\_CN.properties  
  
  
\#名字不能为空  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=\\u7528\\u6237\\u540D  
  
  
i18n.password=\\u5BC6\\u7801  
  
  
i18n\_en\_US.properties  
  
  
\#定制错误消息, 提示消息的国际化  
  
  
\#校验注解类名.bean类名.属性名  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
   
  
  
FirstInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
HandlerInterceptor 自定义拦截器  
  
  
public class FirstInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \* 正序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] preHandle");  
  
  
        return true;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \* 反序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \* 反序执行  
  
  
\*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
SecondInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
public class SecondInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] preHandle");  
  
  
        return false;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
SpringMVCTestExceptionHandler.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
@ControllerAdvice  
  
  
@ControllerAdvice  
  
  
public class SpringMVCTestExceptionHandler \{  
  
  
   
  
  
    @ExceptionHandler(\{ArithmeticException.class\})  
  
  
    public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
        System.out.println("----> 出异常了: " + ex);  
  
  
        ModelAndView mv = new ModelAndView("error");  
  
  
        mv.addObject("exception", ex);  
  
  
        return mv;  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
UserNameNotMatchPasswordException.java  
  
  
package com.atguigu.springmvc.test;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
   
  
  
@ResponseStatus  
  
  
@ResponseStatus(value=HttpStatus.FORBIDDEN, reason="用户名和密码不匹配!")  
  
  
public class UserNameNotMatchPasswordException extends RuntimeException\{  
  
  
   
  
  
    /\*\*  
  
  
     \*  
  
  
     \*/  
  
  
    private static final long serialVersionUID = 1L;  
  
  
   
  
  
     
  
  
\}  
  
  
   
  
  
\------------ springmvc-3 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
     
  
  
      
  
  
      
  
  
    <context-param>  
  
  
        <param-name>contextConfigLocation</param-name>  
  
  
        <param-value>classpath:beans.xml</param-value>  
  
  
    </context-param>  
  
  
   
  
  
      
  
  
    <listener>  
  
  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
  
  
    </listener>  
  
  
     
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
</web-app>  
  
  
beans.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">  
  
  
   
  
  
    <context:component-scan base-package="com.atguigu.springmvc">  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
   
  
  
</beans>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
     
  
  
      
  
  
     
  
  
      
  
  
     
  
  
    <context:component-scan base-package="com.atguigu.springmvc" use-default-filters="false">  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
    <mvc:default-servlet-handler/>  
  
  
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
     
  
  
</beans>  
  
  
HelloWorld.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
   
  
  
@Controller  
  
  
public class HelloWorld \{  
  
  
   
  
  
    @Autowired  
  
  
    private UserService userService;  
  
  
     
  
  
    public HelloWorld() \{  
  
  
        System.out.println("HelloWorld Constructor...");  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/helloworld")  
  
  
    public String hello()\{  
  
  
        System.out.println("success");  
  
  
        System.out.println(userService);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
UserService.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Service;  
  
  
   
  
  
@Service  
  
  
public class UserService \{  
  
  
   
  
  
    @Autowired  
  
  
    private HelloWorld helloWorld;  
  
  
     
  
  
    public UserService() \{  
  
  
        System.out.println("UserService Constructor...");  
  
  
    \}  
  
  
     
  
  
\}  
  
  
abc.html  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Httml Page</h4>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="helloworld">Hello World</a>  
  
  
   
  
  
</body>  
  
  
</html>  
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Success Page</h4>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
EndSpring MVC框架  
  
  
   
  
  
\------------ springmvc-1 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
HiddenHttpMethodFilter  
      
    <filter>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
    </filter>  
    <filter-mapping>  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
        <url-pattern>/\*</url-pattern>  
    </filter-mapping>  
  
  
DispatcherServlet  
  
  
      
    <servlet>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
          
          
          
        <load-on-startup>1</load-on-startup>  
    </servlet>  
    <servlet-mapping>  
        <servlet-name>dispatcherServlet</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
</web-app>  
  
  
   
dispatcherServlet-servlet.xml  
<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
component-scan  
  
  
      
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
InternalResourceViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <property name="prefix" value="/WEB-INF/views/"></property>  
        <property name="suffix" value=".jsp"></property>  
    </bean>  
    
BeanNameViewResolver  
  
  
  
  
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver">  
        <property name="order" value="100"></property>  
    </bean>  
  
  
ResourceBundleMessageSource  
      
    <bean id="messageSource"  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
        <property name="basename" value="i18n"></property>   
    </bean>  
    
view-controller  
      
      
    <mvc:view-controller path="/success" view-name="success"/>  
     
annotation-driven  
      
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
</beans>  
  
  
   
SpringMVCTest.java  
package com.atguigu.springmvc.handlers;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.Writer;  
  
  
import java.util.Arrays;  
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.CookieValue;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestHeader;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.SessionAttributes;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.entities.User;  
  
  
   
@SessionAttributes(value=\{"user"\}, types=\{String.class\})  
  
  
@RequestMapping("/springmvc")  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    private static final String SUCCESS = "success";  
  
  
redirect/ forward  
  
  
    @RequestMapping("/testRedirect")  
  
  
    public String testRedirect()\{  
  
  
        System.out.println("testRedirect");  
  
  
        // return "forward:/index.jsp";  
  
  
        return "redirect:/index.jsp";  
  
  
    \}  
  
  
View  
  
  
    @RequestMapping("/testView")  
  
  
    public String testView()\{  
  
  
        System.out.println("testView");  
  
  
        return "helloView";   //类名第一个字母小写  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/testViewAndViewResolver")  
  
  
    public String testViewAndViewResolver()\{  
  
  
        System.out.println("testViewAndViewResolver");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* 1. 有 @ModelAttribute 标记的方法, 会在每个目标方法执行之前被 SpringMVC 调用!  
  
  
     \* 2. @ModelAttribute 注解也可以来修饰目标方法 POJO 类型的入参, 其 value 属性值有如下的作用:  
  
  
     \* 1). SpringMVC 会使用 value 属性值在 implicitModel 中查找对应的对象, 若存在则会直接传入到目标方法的入参中.  
  
  
     \* 2). SpringMVC 会一 value 为 key, POJO 类型的对象为 value, 存入到 request 中.  
  
  
     \*/  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getUser(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("modelAttribute method");  
  
  
        if(id != null)\{  
  
  
            //模拟从数据库中获取对象  
  
  
            User user = new User(1, "Tom", "123456", "tom@atguigu.com", 12);  
  
  
            System.out.println("从数据库中获取一个对象: " + user);  
  
  
             
  
  
            map.put("user", user);  
  
  
        \}  
  
  
    \}  
  
  
     
    /\*\*  
  
  
     \* 运行流程:  
  
  
     \* 1. 执行 @ModelAttribute 注解修饰的方法: 从数据库中取出对象, 把对象放入到了 Map 中. 键为: user  
     \* 2. SpringMVC 从 Map 中取出 User 对象, 并把表单的请求参数赋给该 User 对象的对应属性.  
  
  
     \* 3. SpringMVC 把上述对象传入目标方法的参数.  
  
  
     \*  
  
  
     \* 注意: 在 @ModelAttribute 修饰的方法中, 放入到 Map 时的键需要和目标方法入参类型的第一个字母小写的字符串一致!  
  
  
     \*  
  
  
     \* SpringMVC 确定目标方法 POJO 类型入参的过程  
  
  
     \* 1. 确定一个 key:  
  
  
     \* 1). 若目标方法的 POJO 类型的参数木有使用 @ModelAttribute 作为修饰, 则 key 为 POJO 类名第一个字母的小写  
  
  
     \* 2). 若使用了  @ModelAttribute 来修饰, 则 key 为 @ModelAttribute 注解的 value 属性值.  
  
  
     \* 2. 在 implicitModel 中查找 key 对应的对象, 若存在, 则作为入参传入  
  
  
     \* 1). 若在 @ModelAttribute 标记的方法中在 Map 中保存过, 且 key 和 1 确定的 key 一致, 则会获取到.  
  
  
     \* 3. 若 implicitModel 中不存在 key 对应的对象, 则检查当前的 Handler 是否使用 @SessionAttributes 注解修饰,  
  
  
     \* 若使用了该注解, 且 @SessionAttributes 注解的 value 属性值中包含了 key, 则会从 HttpSession 中来获取 key 所  
  
  
     \* 对应的 value 值, 若存在则直接传入到目标方法的入参中. 若不存在则将抛出异常.  
  
  
     \* 4. 若 Handler 没有标识 @SessionAttributes 注解或 @SessionAttributes 注解的 value 值中不包含 key, 则  
  
  
     \* 会通过反射来创建 POJO 类型的参数, 传入为目标方法的参数  
  
  
     \* 5. SpringMVC 会把 key 和 POJO 类型的对象保存到 implicitModel 中, 进而会保存到 request 中.  
  
  
     \*  
  
  
     \* 源代码分析的流程  
  
  
     \* 1. 调用 @ModelAttribute 注解修饰的方法. 实际上把 @ModelAttribute 方法中 Map 中的数据放在了 implicitModel 中.  
  
  
     \* 2. 解析请求处理器的目标参数, 实际上该目标参数来自于 WebDataBinder 对象的 target 属性  
  
  
     \* 1). 创建 WebDataBinder 对象:  
  
  
     \* ①. 确定 objectName 属性: 若传入的 attrName 属性值为 "", 则 objectName 为类名第一个字母小写.  
  
  
     \* \*注意: attrName. 若目标方法的 POJO 属性使用了 @ModelAttribute 来修饰, 则 attrName 值即为 @ModelAttribute  
  
  
     \* 的 value 属性值  
  
  
     \*  
  
  
     \* ②. 确定 target 属性:  
  
  
     \*  > 在 implicitModel 中查找 attrName 对应的属性值. 若存在, ok  
  
  
     \*  > \*若不存在: 则验证当前 Handler 是否使用了 @SessionAttributes 进行修饰, 若使用了, 则尝试从 Session 中  
  
  
     \* 获取 attrName 所对应的属性值. 若 session 中没有对应的属性值, 则抛出了异常.  
  
  
     \*  > 若 Handler 没有使用 @SessionAttributes 进行修饰, 或 @SessionAttributes 中没有使用 value 值指定的 key  
  
  
     \* 和 attrName 相匹配, 则通过反射创建了 POJO 对象  
  
  
     \*  
  
  
     \* 2). SpringMVC 把表单的请求参数赋给了 WebDataBinder 的 target 对应的属性.  
  
  
     \* 3). \*SpringMVC 会把 WebDataBinder 的 attrName 和 target 给到 implicitModel.  
  
  
     \* 近而传到 request 域对象中.  
  
  
     \* 4). 把 WebDataBinder 的 target 作为参数传递给目标方法的入参.  
  
  
     \*/  
  
  
    @RequestMapping("/testModelAttribute")  
  
  
    public String testModelAttribute(User user)\{  
  
  
        System.out.println("修改: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* @SessionAttributes 除了可以通过属性名指定需要放到会话中的属性外(实际上使用的是 value 属性值),  
  
  
     \* 还可以通过模型属性的对象类型指定哪些模型属性需要放到会话中(实际上使用的是 types 属性值)  
  
  
     \*  
  
  
     \* 注意: 该注解只能放在类的上面. 而不能修饰放方法.  
  
  
     \*/  
  
  
@SessionAttributes  
  
  
    @RequestMapping("/testSessionAttributes")  
  
  
    public String testSessionAttributes(Map<String, Object> map)\{  
  
  
        User user = new User("Tom", "123456", "tom@atguigu.com", 15);  
  
  
        map.put("user", user);  
  
  
        map.put("school", "atguigu");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法可以添加 Map 类型(实际上也可以是 Model 类型或 ModelMap 类型)的参数.  
  
  
     \* @param map  
  
  
     \* @return  
  
  
     \*/  
  
  
Map  
  
  
    @RequestMapping("/testMap")  
  
  
    public String testMap(Map<String, Object> map)\{  
  
  
        System.out.println(map.getClass().getName());  
  
  
        map.put("names", Arrays.asList("Tom", "Jerry", "Mike"));  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 目标方法的返回值可以是 ModelAndView 类型。  
  
  
     \* 其中可以包含视图和模型信息  
  
  
     \* SpringMVC 会把 ModelAndView 的 model 中数据放入到 request 域对象中.  
  
  
     \* @return  
  
  
     \*/  
  
  
ModelAndView  
  
  
    @RequestMapping("/testModelAndView")  
  
  
    public ModelAndView testModelAndView()\{  
  
  
        String viewName = SUCCESS;  
  
  
        ModelAndView modelAndView = new ModelAndView(viewName);  
  
  
         
  
  
        //添加模型数据到 ModelAndView 中.  
  
  
        modelAndView.addObject("time", new Date());  
  
  
         
  
  
        return modelAndView;  
  
  
    \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 可以使用 Serlvet 原生的 API 作为目标方法的参数 具体支持以下类型  
  
  
     \*  
  
  
     \* HttpServletRequest  
  
  
     \* HttpServletResponse  
  
  
     \* HttpSession  
  
  
     \* java.security.Principal  
  
  
     \* Locale InputStream  
  
  
     \* OutputStream  
  
  
     \* Reader  
  
  
     \* Writer  
  
  
     \* @throws IOException  
  
  
     \*/  
  
  
ServletAPI  
  
  
    @RequestMapping("/testServletAPI")  
  
  
    public void testServletAPI(HttpServletRequest request,  
  
  
            HttpServletResponse response, Writer out) throws IOException \{  
  
  
        System.out.println("testServletAPI, " + request + ", " + response);  
  
  
        out.write("hello springmvc");  
  
  
//      return SUCCESS;  
  
  
    \}  
  
  
    /\*\*  
  
  
     \* Spring MVC 会按请求参数名和 POJO 属性名进行自动匹配， 自动为该对象填充属性值。支持级联属性。  
  
  
     \* 如：dept.deptId、dept.address.tel 等  
  
  
     \*/  
  
  
Pojo  
  
  
    @RequestMapping("/testPojo")  
  
  
    public String testPojo(User user) \{  
  
  
        System.out.println("testPojo: " + user);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解:  
  
  
     \*  
  
  
     \* @CookieValue: 映射一个 Cookie 值. 属性同 @RequestParam  
  
  
     \*/  
  
  
@CookieValue  
  
  
    @RequestMapping("/testCookieValue")  
  
  
    public String testCookieValue(@CookieValue("JSESSIONID") String sessionId) \{  
  
  
        System.out.println("testCookieValue: sessionId: " + sessionId);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 映射请求头信息 用法同 @RequestParam  
  
  
     \*/  
  
  
@RequestHeader  
  
  
    @RequestMapping("/testRequestHeader")  
  
  
    public String testRequestHeader(  
  
  
            @RequestHeader(value = "Accept-Language") String al) \{  
  
  
        System.out.println("testRequestHeader, Accept-Language: " + al);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @RequestParam 来映射请求参数.  
  
  
     \* value 值即请求参数的参数名  
  
  
     \* required 该参数是否必须. 默认为 true  
  
  
     \* defaultValue 请求参数的默认值  
  
  
     \*/  
  
  
@RequestParam  
  
  
    @RequestMapping(value = "/testRequestParam")  
  
  
    public String testRequestParam(  
  
  
            @RequestParam(value = "username") String un,  
  
  
            @RequestParam(value = "age", required = false, defaultValue = "0") int age) \{  
  
  
        System.out.println("testRequestParam, username: " + un + ", age: "  
  
  
                + age);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* Rest 风格的 URL. 以 CRUD 为例:  
  
  
     \* 新增: /order POST  
  
  
     \* 修改: /order/1 PUT update?id=1  
  
  
     \* 获取: /order/1 GET get?id=1  
  
  
     \* 删除: /order/1 DELETE delete?id=1  
  
  
     \*  
  
  
     \* 如何发送 PUT 请求和 DELETE 请求呢 ?  
  
  
     \* 1. 需要配置 HiddenHttpMethodFilter  
  
  
     \* 2. 需要发送 POST 请求  
  
  
     \* 3. 需要在发送 POST 请求时携带一个 name="\_method" 的隐藏域, 值为 DELETE 或 PUT  
  
  
     \*  
  
  
     \* 在 SpringMVC 的目标方法中如何得到 id 呢? 使用 @PathVariable 注解  
  
  
     \*  
  
  
     \*/  
  
  
     
  
  
REST 改  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.PUT)  
  
  
    public String testRestPut(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Put: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 删  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.DELETE)  
  
  
    public String testRestDelete(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest Delete: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 增  
  
  
    @RequestMapping(value = "/testRest", method = RequestMethod.POST)  
  
  
    public String testRest() \{  
  
  
        System.out.println("testRest POST");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
REST 查  
  
  
    @RequestMapping(value = "/testRest/\{id\}", method = RequestMethod.GET)  
  
  
    public String testRest(@PathVariable Integer id) \{  
  
  
        System.out.println("testRest GET: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* @PathVariable 可以来映射 URL 中的占位符到目标方法的参数中.  
  
  
     \* @param id  
  
  
     \* @return  
  
  
     \*/  
  
  
@PathVariable  
  
  
    @RequestMapping("/testPathVariable/\{id\}")  
  
  
    public String testPathVariable(@PathVariable("id") Integer id) \{  
  
  
        System.out.println("testPathVariable: " + id);  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
@RequestMapping – URL  
  
  
    @RequestMapping("/testAntPath/\*/abc")  
  
  
    public String testAntPath() \{  
  
  
        System.out.println("testAntPath");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 了解: 可以使用 params 和 headers 来更加精确的映射请求. params 和 headers 支持简单的表达式.  
  
  
     \* 如果params不符合条件, 则无法访问页面  
  
  
     \* 如果headers不符合条件, 则无法访问页面  
  
  
     \*  
  
  
     \*  
  
  
     \* @return  
  
  
     \*/  
  
  
@RequestMapping – params - headers  
  
  
    @RequestMapping(value = "testParamsAndHeaders", params = \{ "username",  
  
  
            "age!=10" \}, headers = \{ "Accept-Language=zh-CN,zh;q=0.8,en;q=0.6,zh-TW;q=0.4" \})  
  
  
    public String testParamsAndHeaders() \{  
  
  
        System.out.println("testParamsAndHeaders");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 常用: 使用 method 属性来指定请求方式  
  
  
     \* <a href="" /> 通常为get  
  
  
     \*/  
  
  
@RequestMapping - method  
  
  
    @RequestMapping(value = "/testMethod", method = RequestMethod.POST)  
  
  
    public String testMethod() \{  
  
  
        System.out.println("testMethod");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 1. @RequestMapping 除了修饰方法, 还可来修饰类 2. 1). 类定义处: 提供初步的请求映射信息。相对于 WEB 应用的根目录  
  
  
     \* 2). 方法处: 提供进一步的细分映射信息。 相对于类定义处的 URL。若类定义处未标注 @RequestMapping，则方法处标记的 URL  
  
  
     \* 相对于 WEB 应用的根目录  
  
  
     \*/  
  
  
@RequestMapping  
  
  
    @RequestMapping("/testRequestMapping")  
  
  
    public String testRequestMapping() \{  
  
  
        System.out.println("testRequestMapping");  
  
  
        return SUCCESS;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="springmvc/testRedirect">Test Redirect</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testView">Test View</a>  
  
  
    <br><br>  
  
  
   
  
  
    <a href="springmvc/testViewAndViewResolver">Test ViewAndViewResolver</a>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
ModelAttribute  
  
  
    <form action="springmvc/testModelAttribute" method="Post">  
  
  
        <input type="hidden" name="id" value="1"/>  
  
  
        username: <input type="text" name="username" value="Tom"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email" value="tom@atguigu.com"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age" value="12"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
SessionAttributes  
  
  
    <a href="springmvc/testSessionAttributes">Test SessionAttributes</a>  
  
  
    <br><br>  
  
  
Map  
  
  
    <a href="springmvc/testMap">Test Map</a>  
  
  
    <br><br>  
  
  
ModelAndView  
  
  
    <a href="springmvc/testModelAndView">Test ModelAndView</a>  
  
  
    <br><br>  
  
  
ServletAPI  
  
  
    <a href="springmvc/testServletAPI">Test ServletAPI</a>  
  
  
    <br><br>  
  
  
Pojo  
  
  
    <form action="springmvc/testPojo" method="post">  
  
  
        username: <input type="text" name="username"/>  
  
  
        <br>  
  
  
        password: <input type="password" name="password"/>  
  
  
        <br>  
  
  
        email: <input type="text" name="email"/>  
  
  
        <br>  
  
  
        age: <input type="text" name="age"/>  
  
  
        <br>  
  
  
        city: <input type="text" name="address.city"/>  
  
  
        <br>  
  
  
        province: <input type="text" name="address.province"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
CookieValue  
  
  
    <a href="springmvc/testCookieValue">Test CookieValue</a>  
  
  
    <br><br>  
  
  
RequestHeader  
  
  
    <a href="springmvc/testRequestHeader">Test RequestHeader</a>  
  
  
    <br><br>  
  
  
RequestParam  
  
  
    <a href="springmvc/testRequestParam?username=atguigu&age=11">Test RequestParam</a>  
  
  
    <br><br>  
  
  
REST 改  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="PUT"/>  
  
  
        <input type="submit" value="TestRest PUT"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 删  
  
  
    <form action="springmvc/testRest/1" method="post">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
        <input type="submit" value="TestRest DELETE"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 增  
  
  
    <form action="springmvc/testRest" method="post">  
  
  
        <input type="submit" value="TestRest POST"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
REST 查  
  
  
    <a href="springmvc/testRest/1">Test Rest Get</a>  
  
  
    <br><br>  
  
  
@PathVariable  
  
  
    <a href="springmvc/testPathVariable/1">Test PathVariable</a>  
  
  
    <br><br>  
  
  
@RequestMapping – URL  
  
  
    <a href="springmvc/testAntPath/mnxyz/abc">Test AntPath</a>  
  
  
    <br><br>  
  
  
@RequestMapping – params - headers  
  
  
    <a href="springmvc/testParamsAndHeaders?username=atguigu&age=10">Test ParamsAndHeaders</a>  
  
  
    <br><br>  
  
  
@RequestMapping - method  
  
  
    <form action="springmvc/testMethod" method="POST">  
  
  
        <input type="submit" value="submit"/>  
  
  
    </form>  
  
  
   
  
  
    <br><br>  
  
  
    <a href="springmvc/testMethod">Test Method</a>  
  
  
@RequestMapping  
  
  
    <br><br>  
  
  
    <a href="springmvc/testRequestMapping">Test RequestMapping</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="helloworld">Hello World</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Sucess Page</h4>  
  
  
     
  
  
    time: $\{requestScope.time \}  
  
  
    <br><br>  
  
  
     
  
  
    names: $\{requestScope.names \}  
  
  
    <br><br>  
  
  
     
  
  
    request user: $\{requestScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    session user: $\{sessionScope.user \}  
  
  
    <br><br>  
  
  
     
  
  
    request school: $\{requestScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    session school: $\{sessionScope.school \}  
  
  
    <br><br>  
  
  
     
  
  
    abc user: $\{requestScope.abc \}  
  
  
    <br><br>  
  
  
     
  
  
    mnxyz user: $\{requestScope.mnxyz \}  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.username"></fmt:message>  
  
  
    <br><br>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
    <br><br>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
HelloView.java  
  
  
package com.atguigu.springmvc.views;  
  
  
   
  
  
import java.util.Date;  
  
  
import java.util.Map;  
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
import org.springframework.stereotype.Component;  
  
  
import org.springframework.web.servlet.View;  
  
  
   
  
  
//自定义的view, 需要在XML中配置BeanNameViewResolver  
  
  
@Component    //把view 放到ioc 容器里面  
  
  
public class HelloView implements View\{  
  
  
   
  
  
    @Override  
  
  
    public String getContentType() \{  
  
  
        return "text/html";  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public void render(Map<String, ?> model, HttpServletRequest request,  
  
  
            HttpServletResponse response) throws Exception \{  
  
  
        response.getWriter().print("hello view, time: " + new Date());  
  
  
    \}  
  
  
\}  
  
  
   
  
  
\------------ springmvc-2 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
   
  
  
      
  
  
      
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
      
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
      
  
  
    <filter>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>  
  
  
    </filter>  
  
  
     
  
  
    <filter-mapping>  
  
  
        <filter-name>HiddenHttpMethodFilter</filter-name>  
  
  
        <url-pattern>/\*</url-pattern>  
  
  
    </filter-mapping>  
  
  
   
  
  
</web-app>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
    <context:component-scan base-package="com.atguigu.springmvc"></context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
      
  
  
  
  
  
<!—如果加了这个,没有配置 annotation-driven 的话那requestmapping就不能用了 -->  
  
  
<mvc:default-servlet-handler/>    
  
  
配置 annotation-driven  
  
  
      
  
  
  
  
  
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>   
  
  
     
  
  
配置 ConversionService注册自定义格式转换器  
  
  
       
  
  
    <bean id="conversionService"  
  
  
        class="org.springframework.format.support.FormattingConversionServiceFactoryBean">  
  
  
        <property name="converters">  
  
  
            <set>  
  
  
                <ref bean="employeeConverter"/>  
  
  
            </set>  
  
  
        </property>  
  
  
    </bean>  
  
  
     
  
  
配置国际化资源文件  
  
  
      
  
  
    <bean id="messageSource"  
  
  
        class="org.springframework.context.support.ResourceBundleMessageSource">  
  
  
        <property name="basename" value="i18n"></property>  
  
  
    </bean>  
  
  
     
  
  
配置 SessionLocalResolver, 用于把locale存放到session中  
  
  
      
  
  
    <bean id="localeResolver"  
  
  
        class="org.springframework.web.servlet.i18n.SessionLocaleResolver">  
  
  
</bean>  
  
  
     
  
  
配置自定义的拦截器interceptors  
  
  
<mvc:interceptors>  
  
  
配置自定义的拦截器FirstInterceptor  
  
  
          
  
  
        <bean class="com.atguigu.springmvc.interceptors.FirstInterceptor"></bean>  
  
  
         
  
  
配置拦截器(不)作用的路径SecondInterceptor  
  
  
          
  
  
        <mvc:interceptor>  
  
  
            <mvc:mapping path="/emps"/>  
  
  
            <bean class="com.atguigu.springmvc.interceptors.SecondInterceptor"></bean>  
  
  
        </mvc:interceptor>  
  
  
         
  
  
LocaleChangeInterceptor – i18n 国际化  
  
  
          
  
  
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor"></bean>  
  
  
    </mvc:interceptors>  
  
  
     
  
  
配置 view-controller – i18n  
  
  
      
  
  
    <mvc:view-controller path="/i18n2" view-name="i18n2"/>    
  
  
     
  
  
配置 MultipartResolver – 文件上传  
  
  
      
  
  
    <bean id="multipartResolver"  
  
  
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
  
  
        <property name="defaultEncoding" value="UTF-8"></property>  
  
  
        <property name="maxUploadSize" value="1024000"></property>   
  
  
    </bean>  
  
  
     
  
  
配置使用 SimpleMappingExceptionResolver 来映射异常  
  
  
      
  
  
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">  
  
  
        <property name="exceptionAttribute" value="ex"></property>  
  
  
        <property name="exceptionMappings">  
  
  
            <props>  
  
  
                <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>  
  
  
  
  
  
            </props>  
  
  
        </property>  
  
  
    </bean>  
  
  
         
  
  
</beans>  
  
  
EmployeeHandler.java  
  
  
package com.atguigu.springmvc.crud.handlers;  
  
  
   
  
  
import java.util.Map;  
  
  
   
  
  
import javax.validation.Valid;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.validation.Errors;  
  
  
import org.springframework.validation.FieldError;  
  
  
import org.springframework.web.bind.annotation.ModelAttribute;  
  
  
import org.springframework.web.bind.annotation.PathVariable;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.DepartmentDao;  
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class EmployeeHandler \{  
  
  
   
  
  
@Autowired  
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
@ModelAttribute  
  
  
    @ModelAttribute  
  
  
    public void getEmployee(@RequestParam(value="id",required=false) Integer id,  
  
  
            Map<String, Object> map)\{  
  
  
        if(id != null)\{  
  
  
            map.put("employee", employeeDao.get(id));  
  
  
        \}  
  
  
    \}  
  
  
改  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.PUT)  
  
  
    public String update(Employee employee)\{  
  
  
        employeeDao.save(employee);  
  
  
         
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
查  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.GET)  
  
  
    public String input(@PathVariable("id") Integer id, Map<String, Object> map)\{  
  
  
        map.put("employee", employeeDao.get(id));  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        return "input";  
  
  
    \}  
  
  
删  
  
  
    @RequestMapping(value="/emp/\{id\}", method=RequestMethod.DELETE)  
  
  
    public String delete(@PathVariable("id") Integer id)\{  
  
  
        employeeDao.delete(id);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
增 @Valid/BindingResult/Errors  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.POST)  
  
  
    public String save(@Valid Employee employee, Errors result,  
  
  
            Map<String, Object> map)\{  
  
  
        System.out.println("save: " + employee);  
  
  
         
  
  
        if(result.getErrorCount() > 0)\{  
  
  
            System.out.println("出错了!");  
  
  
             
  
  
            for(FieldError error:result.getFieldErrors())\{  
  
  
                System.out.println(error.getField() + ":" + error.getDefaultMessage());  
  
  
            \}  
  
  
             
  
  
            //若验证出错, 则转向定制的页面  
  
  
            map.put("departments", departmentDao.getDepartments());  
  
  
            return "input";  
  
  
        \}  
  
  
         
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
显示添加员工页面  
  
  
    @RequestMapping(value="/emp", method=RequestMethod.GET)  
  
  
    public String input(Map<String, Object> map)\{  
  
  
        map.put("departments", departmentDao.getDepartments());  
  
  
        map.put("employee", new Employee()); // 此处必须添加new Employee()到map中才能显示input.jsp  
  
  
        return "input";  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/emps")  
  
  
    public String list(Map<String, Object> map)\{  
  
  
        map.put("employees", employeeDao.getAll());  
  
  
        return "list";  
  
  
    \}  
  
  
     
  
  
    //设置lastName不进行赋值  
  
  
//  @InitBinder  
  
  
//  public void initBinder(WebDataBinder binder)\{  
  
  
//      binder.setDisallowedFields("lastName");  
  
  
//  \}  
  
  
     
  
  
\}  
  
  
   
  
  
SpringMVCTest.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import java.io.IOException;  
  
  
import java.io.InputStream;  
  
  
import java.util.Collection;  
  
  
import java.util.Date;  
  
  
import java.util.Locale;  
  
  
import java.util.Map;  
  
  
import javax.servlet.ServletContext;  
  
  
import javax.servlet.http.HttpSession;  
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.context.support.ResourceBundleMessageSource;  
  
  
import org.springframework.http.HttpHeaders;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.http.ResponseEntity;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.bind.annotation.RequestBody;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
import org.springframework.web.bind.annotation.RequestMethod;  
  
  
import org.springframework.web.bind.annotation.RequestParam;  
  
  
import org.springframework.web.bind.annotation.ResponseBody;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
import org.springframework.web.multipart.MultipartFile;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
import com.atguigu.springmvc.crud.dao.EmployeeDao;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Controller  
  
  
@Controller  
  
  
public class SpringMVCTest \{  
  
  
   
  
  
    @Autowired  
  
  
    private EmployeeDao employeeDao;  
  
  
     
  
  
ResourceBundleMessageSource 国际化资源信息获取  
  
  
    @Autowired  
  
  
    private ResourceBundleMessageSource messageSource;  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    @RequestMapping("/testSimpleMappingExceptionResolver")  
  
  
    public String testSimpleMappingExceptionResolver(@RequestParam("i") int i)\{  
  
  
        String \[\] vals = new String\[10\];  
  
  
        System.out.println(vals\[i\]);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    @RequestMapping(value="/testDefaultHandlerExceptionResolver",method=RequestMethod.POST)  
  
  
    public String testDefaultHandlerExceptionResolver()\{  
  
  
        System.out.println("testDefaultHandlerExceptionResolver...");  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
ResponseStatusExceptionResolver @ResponseStatus  
  
  
@ResponseStatus(reason="测试",value=HttpStatus.NOT\_FOUND)  
  
  
//如果在方法上加这个注解,则无论i是什么都会抛出异常  
  
  
//如果在类上加这个注解,则i=13时抛出异常  
  
  
    @RequestMapping("/testResponseStatusExceptionResolver")  
  
  
    public String testResponseStatusExceptionResolver(@RequestParam("i") int i)\{  
  
  
        if(i == 13)\{  
  
  
            throw new UserNameNotMatchPasswordException();  
  
  
        \}  
  
  
        System.out.println("testResponseStatusExceptionResolver...");  
  
  
         
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
handleArithmeticException, @ExceptionHandler  
  
  
//  @ExceptionHandler(\{RuntimeException.class\})  
  
  
//  public ModelAndView handleArithmeticException2(Exception ex)\{  
  
  
//      System.out.println("\[出异常了\]: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
    /\*\*  
  
  
     \* 1. 在 @ExceptionHandler 方法的入参中可以加入 Exception 类型的参数, 该参数即对应发生的异常对象  
  
  
     \* 2. @ExceptionHandler 方法的入参中不能传入 Map. 若希望把异常信息传导页面上, 需要使用 ModelAndView 作为返回值  
  
  
     \* 3. @ExceptionHandler 方法标记的异常有优先级的问题.  
  
  
     \* 4. @ControllerAdvice: 如果在当前 Handler 中找不到 @ExceptionHandler 方法来出来当前方法出现的异常,  
  
  
     \* 则将去 @ControllerAdvice 标记的类中查找 @ExceptionHandler 标记的方法来处理异常.  
  
  
     \*/  
  
  
//  @ExceptionHandler(\{ArithmeticException.class\})  
  
  
//  public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
//      System.out.println("出异常了: " + ex);  
  
  
//      ModelAndView mv = new ModelAndView("error");  
  
  
//      mv.addObject("exception", ex);  
  
  
//      return mv;  
  
  
//  \}  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    @RequestMapping("/testExceptionHandlerExceptionResolver")  
  
  
    public String testExceptionHandlerExceptionResolver(@RequestParam("i") int i)\{  
  
  
        System.out.println("result: " + (10 / i));  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
FileUpload  
  
  
    @RequestMapping("/testFileUpload")  
  
  
    public String testFileUpload(@RequestParam("desc") String desc,  
  
  
            @RequestParam("file") MultipartFile file) throws IOException\{  
  
  
        System.out.println("desc: " + desc);  
  
  
        System.out.println("OriginalFilename: " + file.getOriginalFilename());  
  
  
        System.out.println("InputStream: " + file.getInputStream());  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
国际化 i18n  
  
  
    @RequestMapping("/i18n")  
  
  
    public String testI18n(Locale locale)\{  
  
  
        String val = messageSource.getMessage("i18n.user", null, locale);  
  
  
        System.out.println(val);  
  
  
        return "i18n";  
  
  
    \}  
  
  
     
  
  
ResponseEntity  
  
  
    @RequestMapping("/testResponseEntity")  
  
  
    public ResponseEntity<byte\[\]> testResponseEntity(HttpSession session) throws IOException\{  
  
  
        byte \[\] body = null;  
  
  
        ServletContext servletContext = session.getServletContext();  
  
  
        InputStream in = servletContext.getResourceAsStream("/files/abc.txt");  
  
  
        body = new byte\[in.available()\];  
  
  
        in.read(body);  
  
  
         
  
  
        HttpHeaders headers = new HttpHeaders();  
  
  
        headers.add("Content-Disposition", "attachment;filename=abc.txt");  
  
  
         
  
  
        HttpStatus statusCode = HttpStatus.OK;  
  
  
         
  
  
        ResponseEntity<byte\[\]> response = new ResponseEntity<byte\[\]>(body, headers, statusCode);  
  
  
        return response;  
  
  
    \}  
  
  
     
  
  
HttpMessageConverter  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testHttpMessageConverter")  
  
  
    public String testHttpMessageConverter(@RequestBody String body)\{  
  
  
        System.out.println(body);  
  
  
        return "helloworld! " + new Date();  
  
  
    \}  
  
  
     
  
  
@ResponseBody – 处理Jason数据  
  
  
    @ResponseBody  
  
  
    @RequestMapping("/testJson")  
  
  
    public Collection<Employee> testJson()\{  
  
  
        return employeeDao.getAll();  
  
  
    \}  
  
  
     
  
  
ConversionService Converer  
  
  
    @RequestMapping("/testConversionServiceConverer")  
  
  
    public String testConverter(@RequestParam("employee") Employee employee)\{  
  
  
        System.out.println("save: " + employee);  
  
  
        employeeDao.save(employee);  
  
  
        return "redirect:/emps";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
list.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
删  
  
  
<!—此处用于将delete请求转换为 post 请求-->  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $(".delete").click(function()\{  
  
  
            var href = $(this).attr("href");  
  
  
            $("form").attr("action", href).submit();             
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
删  
  
  
    <!—此处用于将delete请求转换为 post 请求-->  
  
  
    <form action="" method="POST">  
  
  
        <input type="hidden" name="\_method" value="DELETE"/>  
  
  
    </form>  
  
  
     
  
  
    <c:if test="$\{empty requestScope.employees \}">  
  
  
        没有任何员工信息.  
  
  
    </c:if>  
  
  
    <c:if test="$\{!empty requestScope.employees \}">  
  
  
        <table border="1" cellpadding="10" cellspacing="0">  
  
  
            <tr>  
  
  
                <th>ID</th>  
  
  
                <th>LastName</th>  
  
  
                <th>Email</th>  
  
  
                <th>Gender</th>  
  
  
                <th>Department</th>  
  
  
                <th>Edit</th>  
  
  
                <th>Delete</th>  
  
  
            </tr>  
  
  
             
  
  
            <c:forEach items="$\{requestScope.employees \}" var="emp">  
  
  
                <tr>  
  
  
                    <td>$\{emp.id \}</td>  
  
  
                    <td>$\{emp.lastName \}</td>  
  
  
                    <td>$\{emp.email \}</td>  
  
  
                    <td>$\{emp.gender == 0 ? ‘Female‘ : ‘Male‘ \}</td>  
  
  
                    <td>$\{emp.department.departmentName \}</td>  
  
  
改  
  
  
                    <td><a href="emp/$\{emp.id\}">Edit</a></td>  
  
  
删  
  
  
                    <td><a class="delete" href="emp/$\{emp.id\}">Delete</a></td>  
  
  
                    
  
  
                </tr>  
  
  
            </c:forEach>  
  
  
        </table>  
  
  
    </c:if>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emp">Add New Employee</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
input.jsp  
  
  
Errors  
  
  
Hidden  
  
  
input  
  
  
radiobuttons  
  
  
select  
  
  
   
  
  
<%@page import="java.util.HashMap"%>  
  
  
<%@page import="java.util.Map"%>  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>  
  
  
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
测试字符串格式添加用户converter  
  
  
    <form action="testConversionServiceConverer" method="POST">  
  
  
          
  
  
        Employee: <input type="text" name="employee"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
    <br><br>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
增  
  
  
<form:form action="$\{pageContext.request.contextPath \}/emp" method="POST"  
  
  
        modelAttribute="employee">  
  
  
         
  
  
        <form:errors path="\*"></form:errors>  
  
  
        <br>  
  
  
         
  
  
        <c:if test="$\{employee.id == null \}">  
  
  
              
  
  
            LastName: <form:input path="lastName"/>  
  
  
            <form:errors path="lastName"></form:errors>  
  
  
        </c:if>  
  
  
        <c:if test="$\{employee.id != null \}">  
  
  
            <form:hidden path="id"/>  
  
  
            <input type="hidden" name="\_method" value="PUT"/>  
  
  
            <%-- 对于 \_method 不能使用 form:hidden 标签, 因为 modelAttribute 对应的 bean 中没有 \_method 这个属性 --%>  
  
  
            <%--  
  
  
            <form:hidden path="\_method" value="PUT"/>  
  
  
            --%>  
  
  
        </c:if>  
  
  
         
  
  
        <br>  
  
  
        Email: <form:input path="email"/>  
  
  
        <form:errors path="email"></form:errors>  
  
  
        <br>  
  
  
        <%  
  
  
            Map<String, String> genders = new HashMap();  
  
  
            genders.put("1", "Male");  
  
  
            genders.put("0", "Female");  
  
  
             
  
  
            request.setAttribute("genders", genders);  
  
  
        %>  
  
  
        Gender:  
  
  
        <br>  
  
  
        <form:radiobuttons path="gender" items="$\{genders \}" delimiter="<br>"/>  
  
  
        <br>  
  
  
        Department: <form:select path="department.id"  
  
  
            items="$\{departments \}" itemLabel="departmentName" itemValue="id"></form:select>  
  
  
        <br>  
  
  
          
  
  
         
  
  
        Birth: <form:input path="birth"/>  
  
  
        <form:errors path="birth"></form:errors>  
  
  
        <br>  
  
  
        Salary: <form:input path="salary"/>  
  
  
        <br>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form:form>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
<script type="text/javascript" src="scripts/jquery-1.9.1.min.js"></script>  
  
  
<script type="text/javascript">  
  
  
    $(function()\{  
  
  
        $("\#testJson").click(function()\{  
  
  
            var url = this.href;  
  
  
            var args = \{\};  
  
  
            $.post(url, args, function(data)\{  
  
  
                for(var i = 0; i < data.length; i++)\{  
  
  
                    var id = data\[i\].id;  
  
  
                    var lastName = data\[i\].lastName;  
  
  
                      
  
  
                    alert(id + ": " + lastName);  
  
  
                \}  
  
  
            \});  
  
  
            return false;  
  
  
        \});  
  
  
    \})  
  
  
</script>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
FileUpload 文件上传  
  
  
    <form action="testFileUpload" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
    <a href="emps">List All Employees</a>  
  
  
    <br><br>  
  
  
     
  
  
testJson  
  
  
    <a href="testJson" id="testJson">Test Json</a>  
  
  
    <br><br>  
  
  
     
  
  
HttpMessageConverter 文件上传  
  
  
    <form action="testHttpMessageConverter" method="POST" enctype="multipart/form-data">  
  
  
        File: <input type="file" name="file"/>  
  
  
        Desc: <input type="text" name="desc"/>  
  
  
        <input type="submit" value="Submit"/>  
  
  
    </form>  
  
  
     
  
  
    <br><br>  
  
  
     
  
  
ResponseEntity  
  
  
    <a href="testResponseEntity">Test ResponseEntity</a>  
  
  
     
  
  
      
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
ExceptionHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testExceptionHandlerExceptionResolver?i=10">Test ExceptionHandlerExceptionResolver</a>  
  
  
     
  
  
ResponseStatusExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testResponseStatusExceptionResolver?i=10">Test ResponseStatusExceptionResolver</a>  
  
  
     
  
  
DefaultHandlerExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testDefaultHandlerExceptionResolver">Test DefaultHandlerExceptionResolver</a>  
  
  
     
  
  
SimpleMappingExceptionResolver  
  
  
    <br><br>  
  
  
    <a href="testSimpleMappingExceptionResolver?i=2">Test SimpleMappingExceptionResolver</a>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
i18n.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
Fmt 标签  
  
  
    <fmt:message key="i18n.user"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n2">I18N2 PAGE</a>  
  
  
     
  
  
Locale , 实现中英文切换效果,  
  
  
需配置解析器SessionLocalResolver  
  
  
和配置拦截器LocaleChangeInterceptor  
  
  
    <br><br>  
  
  
    <a href="i18n?locale=zh\_CH">中文</a>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n?locale=en\_US">英文</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
i18n2.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>  
  
  
     
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <fmt:message key="i18n.password"></fmt:message>  
  
  
     
  
  
    <br><br>  
  
  
    <a href="i18n">I18N PAGE</a>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
   
  
  
error.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Error Page</h4>  
  
  
    $\{requestScope.exception \}  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
EmployeeConverter.java  
  
  
package com.atguigu.springmvc.converters;  
  
  
   
  
  
import org.springframework.core.convert.converter.Converter;  
  
  
import org.springframework.stereotype.Component;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Component  
  
  
@Component  
  
  
public class EmployeeConverter implements Converter<String, Employee> \{  
  
  
//string 转为 Employee  
  
  
convert  
  
  
    @Override  
  
  
    public Employee convert(String source) \{  
  
  
        if(source != null)\{  
  
  
            String \[\] vals = source.split("-");  
  
  
            //GG-gg@atguigu.com-0-105  
  
  
            if(vals != null && vals.length == 4)\{  
  
  
                String lastName = vals\[0\];  
  
  
                String email = vals\[1\];  
  
  
                Integer gender = Integer.parseInt(vals\[2\]);  
  
  
                Department department = new Department();  
  
  
                department.setId(Integer.parseInt(vals\[3\]));  
  
  
                 
  
  
                Employee employee = new Employee(null, lastName, email, gender, department);  
  
  
                System.out.println(source + "--convert--" + employee);  
  
  
                return employee;  
  
  
            \}  
  
  
        \}  
  
  
        return null;  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
DepartmentDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
   
  
  
@Repository  
  
  
public class DepartmentDao \{  
  
  
   
  
  
    private static Map<Integer, Department> departments = null;  
  
  
     
  
  
    static\{  
  
  
        departments = new HashMap<Integer, Department>();  
  
  
         
  
  
        departments.put(101, new Department(101, "D-AA"));  
  
  
        departments.put(102, new Department(102, "D-BB"));  
  
  
        departments.put(103, new Department(103, "D-CC"));  
  
  
        departments.put(104, new Department(104, "D-DD"));  
  
  
        departments.put(105, new Department(105, "D-EE"));  
  
  
    \}  
  
  
     
  
  
    public Collection<Department> getDepartments()\{  
  
  
        return departments.values();  
  
  
    \}  
  
  
     
  
  
    public Department getDepartment(Integer id)\{  
  
  
        return departments.get(id);  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
EmployeeDao.java  
  
  
package com.atguigu.springmvc.crud.dao;  
  
  
   
  
  
import java.util.Collection;  
  
  
import java.util.HashMap;  
  
  
import java.util.Map;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Repository;  
  
  
   
  
  
import com.atguigu.springmvc.crud.entities.Department;  
  
  
import com.atguigu.springmvc.crud.entities.Employee;  
  
  
   
  
  
@Repository  
  
  
public class EmployeeDao \{  
  
  
   
  
  
    private static Map<Integer, Employee> employees = null;  
  
  
     
  
  
    @Autowired  
  
  
    private DepartmentDao departmentDao;  
  
  
     
  
  
    static\{  
  
  
        employees = new HashMap<Integer, Employee>();  
  
  
   
  
  
        employees.put(1001, new Employee(1001, "E-AA", "aa@163.com", 1, new Department(101, "D-AA")));  
  
  
        employees.put(1002, new Employee(1002, "E-BB", "bb@163.com", 1, new Department(102, "D-BB")));  
  
  
        employees.put(1003, new Employee(1003, "E-CC", "cc@163.com", 0, new Department(103, "D-CC")));  
  
  
        employees.put(1004, new Employee(1004, "E-DD", "dd@163.com", 0, new Department(104, "D-DD")));  
  
  
        employees.put(1005, new Employee(1005, "E-EE", "ee@163.com", 1, new Department(105, "D-EE")));  
  
  
    \}  
  
  
     
  
  
    private static Integer initId = 1006;  
  
  
     
  
  
    public void save(Employee employee)\{  
  
  
        if(employee.getId() == null)\{  
  
  
            employee.setId(initId++);  
  
  
        \}  
  
  
         
  
  
        employee.setDepartment(departmentDao.getDepartment(employee.getDepartment().getId()));  
  
  
        employees.put(employee.getId(), employee);  
  
  
    \}  
  
  
     
  
  
    public Collection<Employee> getAll()\{  
  
  
        return employees.values();  
  
  
    \}  
  
  
     
  
  
    public Employee get(Integer id)\{  
  
  
        return employees.get(id);  
  
  
    \}  
  
  
     
  
  
    public void delete(Integer id)\{  
  
  
        employees.remove(id);  
  
  
    \}  
  
  
\}  
  
  
Employee.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
import java.util.Date;  
  
  
import javax.validation.constraints.Past;  
  
  
import org.hibernate.validator.constraints.Email;  
  
  
import org.hibernate.validator.constraints.NotEmpty;  
  
  
import org.springframework.format.annotation.DateTimeFormat;  
  
  
import org.springframework.format.annotation.NumberFormat;  
  
  
   
  
  
public class Employee \{  
  
  
   
  
  
private Integer id;  
  
  
@NotEmpty  
  
  
    @NotEmpty  
  
  
    private String lastName;  
  
  
@Emai  
  
  
    @Email  
  
  
    private String email;  
  
  
    //1 male, 0 female  
  
  
    private Integer gender;  
  
  
     
  
  
    private Department department;  
  
  
@Past  
  
  
@DateTimeFormat  
  
  
    @Past  
  
  
    @DateTimeFormat(pattern="yyyy-MM-dd")  
  
  
    private Date birth;  
  
  
@NumberFormat  
  
  
    @NumberFormat(pattern="\#,\#\#\#,\#\#\#.\#")  
  
  
    private Float salary;  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getLastName() \{  
  
  
        return lastName;  
  
  
    \}  
  
  
   
  
  
    public void setLastName(String lastName) \{  
  
  
        this.lastName = lastName;  
  
  
    \}  
  
  
   
  
  
    public String getEmail() \{  
  
  
        return email;  
  
  
    \}  
  
  
   
  
  
    public void setEmail(String email) \{  
  
  
        this.email = email;  
  
  
    \}  
  
  
   
  
  
    public Integer getGender() \{  
  
  
        return gender;  
  
  
    \}  
  
  
   
  
  
    public void setGender(Integer gender) \{  
  
  
        this.gender = gender;  
  
  
    \}  
  
  
   
  
  
    public Department getDepartment() \{  
  
  
        return department;  
  
  
    \}  
  
  
   
  
  
    public void setDepartment(Department department) \{  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Date getBirth() \{  
  
  
        return birth;  
  
  
    \}  
  
  
   
  
  
    public void setBirth(Date birth) \{  
  
  
        this.birth = birth;  
  
  
    \}  
  
  
   
  
  
    public Float getSalary() \{  
  
  
        return salary;  
  
  
    \}  
  
  
   
  
  
    public void setSalary(Float salary) \{  
  
  
        this.salary = salary;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Employee \[id=" + id + ", lastName=" + lastName + ", email="  
  
  
                + email + ", gender=" + gender + ", department=" + department  
  
  
                + ", birth=" + birth + ", salary=" + salary + "\]";  
  
  
    \}  
  
  
   
  
  
    public Employee(Integer id, String lastName, String email, Integer gender,  
  
  
            Department department) \{  
  
  
        super();  
  
  
        this.id = id;  
  
  
        this.lastName = lastName;  
  
  
        this.email = email;  
  
  
        this.gender = gender;  
  
  
        this.department = department;  
  
  
    \}  
  
  
   
  
  
    public Employee() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
\}  
  
  
Department.java  
  
  
package com.atguigu.springmvc.crud.entities;  
  
  
   
  
  
public class Department \{  
  
  
   
  
  
    private Integer id;  
  
  
    private String departmentName;  
  
  
   
  
  
    public Department() \{  
  
  
        // TODO Auto-generated constructor stub  
  
  
    \}  
  
  
     
  
  
    public Department(int i, String string) \{  
  
  
        this.id = i;  
  
  
        this.departmentName = string;  
  
  
    \}  
  
  
   
  
  
    public Integer getId() \{  
  
  
        return id;  
  
  
    \}  
  
  
   
  
  
    public void setId(Integer id) \{  
  
  
        this.id = id;  
  
  
    \}  
  
  
   
  
  
    public String getDepartmentName() \{  
  
  
        return departmentName;  
  
  
    \}  
  
  
   
  
  
    public void setDepartmentName(String departmentName) \{  
  
  
        this.departmentName = departmentName;  
  
  
    \}  
  
  
   
  
  
    @Override  
  
  
    public String toString() \{  
  
  
        return "Department \[id=" + id + ", departmentName=" + departmentName  
  
  
                + "\]";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
i18n.properties  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
i18n\_zh\_CN.properties  
  
  
\#名字不能为空  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=\\u7528\\u6237\\u540D  
  
  
i18n.password=\\u5BC6\\u7801  
  
  
i18n\_en\_US.properties  
  
  
\#定制错误消息, 提示消息的国际化  
  
  
\#校验注解类名.bean类名.属性名  
  
  
NotEmpty.employee.lastName=^^LastName\\u4E0D\\u80FD\\u4E3A\\u7A7A.  
  
  
Email.employee.email=Email\\u5730\\u5740\\u4E0D\\u5408\\u6CD5  
  
  
Past.employee.birth=Birth\\u4E0D\\u80FD\\u662F\\u4E00\\u4E2A\\u5C06\\u6765\\u7684\\u65F6\\u95F4.  
  
  
   
  
  
typeMismatch.employee.birth=Birth\\u4E0D\\u662F\\u4E00\\u4E2A\\u65E5\\u671F.  
  
  
   
  
  
i18n.user=User  
  
  
i18n.password=Password  
  
  
   
  
  
FirstInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
HandlerInterceptor 自定义拦截器  
  
  
public class FirstInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \* 正序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] preHandle");  
  
  
        return true;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \* 反序执行  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \* 反序执行  
  
  
\*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[FirstInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
SecondInterceptor.java  
  
  
package com.atguigu.springmvc.interceptors;  
  
  
   
  
  
import javax.servlet.http.HttpServletRequest;  
  
  
import javax.servlet.http.HttpServletResponse;  
  
  
   
  
  
import org.springframework.web.servlet.HandlerInterceptor;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
public class SecondInterceptor implements HandlerInterceptor\{  
  
  
   
  
  
    /\*\*  
  
  
     \* 该方法在目标方法之前被调用.  
  
  
     \* 若返回值为 true, 则继续调用后续的拦截器和目标方法.  
  
  
     \* 若返回值为 false, 则不会再调用后续的拦截器和目标方法.  
  
  
     \*  
  
  
     \* 可以考虑做权限. 日志, 事务等.  
  
  
     \*/  
  
  
    @Override  
  
  
    public boolean preHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] preHandle");  
  
  
        return false;  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 调用目标方法之后, 但渲染视图之前.  
  
  
     \* 可以对请求域中的属性或视图做出修改.  
  
  
     \*/  
  
  
    @Override  
  
  
    public void postHandle(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler,  
  
  
            ModelAndView modelAndView) throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] postHandle");  
  
  
    \}  
  
  
   
  
  
    /\*\*  
  
  
     \* 渲染视图之后被调用. 释放资源  
  
  
     \*/  
  
  
    @Override  
  
  
    public void afterCompletion(HttpServletRequest request,  
  
  
            HttpServletResponse response, Object handler, Exception ex)  
  
  
            throws Exception \{  
  
  
        System.out.println("\[SecondInterceptor\] afterCompletion");  
  
  
    \}  
  
  
   
  
  
\}  
  
  
   
  
  
SpringMVCTestExceptionHandler.java  
  
  
package com.atguigu.springmvc.test;  
  
  
   
  
  
import org.springframework.web.bind.annotation.ControllerAdvice;  
  
  
import org.springframework.web.bind.annotation.ExceptionHandler;  
  
  
import org.springframework.web.servlet.ModelAndView;  
  
  
   
  
  
@ControllerAdvice  
  
  
@ControllerAdvice  
  
  
public class SpringMVCTestExceptionHandler \{  
  
  
   
  
  
    @ExceptionHandler(\{ArithmeticException.class\})  
  
  
    public ModelAndView handleArithmeticException(Exception ex)\{  
  
  
        System.out.println("----> 出异常了: " + ex);  
  
  
        ModelAndView mv = new ModelAndView("error");  
  
  
        mv.addObject("exception", ex);  
  
  
        return mv;  
  
  
    \}  
  
  
     
  
  
\}  
  
  
   
  
  
UserNameNotMatchPasswordException.java  
  
  
package com.atguigu.springmvc.test;  
  
  
import org.springframework.http.HttpStatus;  
  
  
import org.springframework.web.bind.annotation.ResponseStatus;  
  
  
   
  
  
@ResponseStatus  
  
  
@ResponseStatus(value=HttpStatus.FORBIDDEN, reason="用户名和密码不匹配!")  
  
  
public class UserNameNotMatchPasswordException extends RuntimeException\{  
  
  
   
  
  
    /\*\*  
  
  
     \*  
  
  
     \*/  
  
  
    private static final long serialVersionUID = 1L;  
  
  
   
  
  
     
  
  
\}  
  
  
   
  
  
\------------ springmvc-3 ------------  
  
  
web.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns="http://java.sun.com/xml/ns/javaee"  
  
  
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app\_2\_5.xsd"  
  
  
    id="WebApp\_ID" version="2.5">  
  
  
     
  
  
      
  
  
      
  
  
    <context-param>  
  
  
        <param-name>contextConfigLocation</param-name>  
  
  
        <param-value>classpath:beans.xml</param-value>  
  
  
    </context-param>  
  
  
   
  
  
      
  
  
    <listener>  
  
  
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
  
  
    </listener>  
  
  
     
  
  
    <servlet>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
  
  
        <init-param>  
  
  
            <param-name>contextConfigLocation</param-name>  
  
  
            <param-value>classpath:springmvc.xml</param-value>  
  
  
        </init-param>  
  
  
        <load-on-startup>1</load-on-startup>  
  
  
    </servlet>  
  
  
   
  
  
    <servlet-mapping>  
  
  
        <servlet-name>springDispatcherServlet</servlet-name>  
  
  
        <url-pattern>/</url-pattern>  
  
  
    </servlet-mapping>  
  
  
     
  
  
</web-app>  
  
  
beans.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">  
  
  
   
  
  
    <context:component-scan base-package="com.atguigu.springmvc">  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:exclude-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
   
  
  
</beans>  
  
  
springmvc.xml  
  
  
<?xml version="1.0" encoding="UTF-8"?>  
  
  
<beans xmlns="http://www.springframework.org/schema/beans"  
  
  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  
  
    xmlns:context="http://www.springframework.org/schema/context"  
  
  
    xmlns:mvc="http://www.springframework.org/schema/mvc"  
  
  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd  
  
  
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd  
  
  
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
  
  
   
  
  
      
  
  
     
  
  
      
  
  
     
  
  
      
  
  
     
  
  
    <context:component-scan base-package="com.atguigu.springmvc" use-default-filters="false">  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.stereotype.Controller"/>  
  
  
        <context:include-filter type="annotation"  
  
  
            expression="org.springframework.web.bind.annotation.ControllerAdvice"/>  
  
  
    </context:component-scan>  
  
  
   
  
  
      
  
  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
  
  
        <property name="prefix" value="/WEB-INF/views/"></property>  
  
  
        <property name="suffix" value=".jsp"></property>  
  
  
    </bean>  
  
  
     
  
  
    <mvc:default-servlet-handler/>  
  
  
    <mvc:annotation-driven></mvc:annotation-driven>  
  
  
     
  
  
</beans>  
  
  
HelloWorld.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Controller;  
  
  
import org.springframework.web.bind.annotation.RequestMapping;  
  
  
   
  
  
@Controller  
  
  
public class HelloWorld \{  
  
  
   
  
  
    @Autowired  
  
  
    private UserService userService;  
  
  
     
  
  
    public HelloWorld() \{  
  
  
        System.out.println("HelloWorld Constructor...");  
  
  
    \}  
  
  
     
  
  
    @RequestMapping("/helloworld")  
  
  
    public String hello()\{  
  
  
        System.out.println("success");  
  
  
        System.out.println(userService);  
  
  
        return "success";  
  
  
    \}  
  
  
     
  
  
\}  
  
  
UserService.java  
  
  
package com.atguigu.springmvc;  
  
  
   
  
  
import org.springframework.beans.factory.annotation.Autowired;  
  
  
import org.springframework.stereotype.Service;  
  
  
   
  
  
@Service  
  
  
public class UserService \{  
  
  
   
  
  
    @Autowired  
  
  
    private HelloWorld helloWorld;  
  
  
     
  
  
    public UserService() \{  
  
  
        System.out.println("UserService Constructor...");  
  
  
    \}  
  
  
     
  
  
\}  
  
  
abc.html  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
     
  
  
    <h4>Httml Page</h4>  
  
  
     
  
  
</body>  
  
  
</html>  
  
  
index.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
   
  
  
    <a href="helloworld">Hello World</a>  
  
  
   
  
  
</body>  
  
  
</html>  
  
  
success.jsp  
  
  
<%@ page language="java" contentType="text/html; charset=UTF-8"  
  
  
    pageEncoding="UTF-8"%>  
  
  
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  
  
  
<html>  
  
  
<head>  
  
  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
  
  
<title>Insert title here</title>  
  
  
</head>  
  
  
<body>  
  
  
    <h4>Success Page</h4>  
  
  
</body>  
  
  
</html>  
  
  
   
  
  
End