SpringMVC第一个程序及环境搭建

超、凢脫俗 2023-10-07 13:38 27阅读 0赞

#### Title ####

*  环境搭建
 *  第一个程序（jsp ->Servlet (Springmvc)->Jsp）

## 环境搭建 ##

1.jar  
spring-aop.jar  
spring-bean.jar  
spring-context.jar  
spring-core.jar  
spring-web.jar

spring-webmvc.jar  
commons-logging.jar

**如果报错NoClassDefFoundError：缺少jar**

## 第一个程序（jsp ->Servlet (Springmvc)->Jsp） ##

项目结构：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70]  
springmvc配置文件 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:aop="http://www.springframework.org/schema/aop"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:c="http://www.springframework.org/schema/c"
    	xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
    		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-4.3.xsd
    		http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
    
    
    <context:component-scan base-package="org.cduck"></context:component-scan>
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    	<property name="prefix" value="/view/"></property>
    	<property name="suffix" value=".jsp"></property>
    
    </bean>
    </beans>

Controller：

package org.cduck.controller;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    public class MvcController {
        
    	
    	@RequestMapping("welcome")
    	public String welcome() {
        
    		
    		return "successe";
    	}
    }

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">
      <display-name>SpringMVC-Project</display-name>
      <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
      </welcome-file-list>
      
      
      	
    	<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>

通过以下配置，拦截所有请求，交给SpringMVC处理而不是交给 普通的servlet处理：

<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>

其中：

<url-pattern>.action</url-pattern>

/:一切请求 ，注意不是 /\*  
/user:拦截以 /user开头的请求  
/user/abc.do :只拦截该请求  
.action:只拦截 .action结尾的请求

--------------------

JSP页面:

index:
    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    <div align="center">
    <a href="welcome"> 欢迎点击 </a>
    </div>
    </body>
    </html>
    ----------------------------------------------------------------
    successe:
    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    
    
    <h1 align="center">测试成功hahhaha(u1s1这个穿透工具真好用)</h1>
    </body>
    </html>

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200426110638666.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzIxMDQwNTU5,size_16,color_FFFFFF,t_70