springmvc实现Resetful风格url（maven项目）

r囧r小猫 2022-07-17 03:16 142阅读 0赞

**pom.xml**

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    	<groupId>imooc-arthur</groupId>
    	<artifactId>spring-mvc-study</artifactId>
    	<version>1.0.0-SNAPSHOT</version>
    
    	<properties>
    		<commons-lang.version>2.6</commons-lang.version>
    		<slf4j.version>1.7.6</slf4j.version>
    		<spring.version>4.1.3.RELEASE</spring.version>
            <jackson.version>2.5.4</jackson.version>
    	</properties>
    
    
    	<dependencyManagement>
    		<dependencies>
    			<dependency>
    				<groupId>org.springframework</groupId>
    				<artifactId>spring-framework-bom</artifactId>
    				<version>${spring.version}</version>
    				<type>pom</type>
    				<scope>import</scope>
    			</dependency>
    		</dependencies>
    	</dependencyManagement>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    		</dependency>
    
    		<dependency>
    			<groupId>commons-lang</groupId>
    			<artifactId>commons-lang</artifactId>
    			<version>${commons-lang.version}</version>
    		</dependency>
    
    
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-log4j12</artifactId>
    			<version>${slf4j.version}</version>
    			<exclusions>
    				<exclusion>
    					<artifactId>slf4j-api</artifactId>
    					<groupId>org.slf4j</groupId>
    				</exclusion>
    			</exclusions>
    		</dependency>
    
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-api</artifactId>
    			<version>${slf4j.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>javax.servlet</groupId>
    			<artifactId>servlet-api</artifactId>
    			<version>2.5</version>
    		</dependency>
    
    		<dependency>
    			<groupId>commons-fileupload</groupId>
    			<artifactId>commons-fileupload</artifactId>
    			<version>1.3.1</version>
    		</dependency>
    
    		<dependency>
    			<groupId>com.fasterxml.jackson.core</groupId>
    			<artifactId>jackson-databind</artifactId>
    			<version>${jackson.version}</version>
    		</dependency>
    
    	</dependencies>
    
    	<build>
    		<plugins>
    			<plugin>
    				<groupId>org.eclipse.jetty</groupId>
    				<artifactId>jetty-maven-plugin</artifactId>
    				<version>9.2.2.v20140723</version>
    			</plugin>
    		</plugins>
    	</build>
    
    </project></span>

**web.xml**

<?xml version="1.0" encoding="UTF-8"?>  
    <web-app version="3.0"   
        xmlns="http://java.sun.com/xml/ns/javaee"   
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   
        http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  
      <display-name></display-name>   
      <welcome-file-list>  
        <welcome-file>index.jsp</welcome-file>  
      </welcome-file-list>   
          
        <listener>  
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
        </listener>        
          
         <listener>  
             <listener-class>  
                 org.springframework.web.util.IntrospectorCleanupListener  
             </listener-class>  
         </listener>  
          
        <servlet>  
            <servlet-name>spring</servlet-name>  
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
            <load-on-startup>1</load-on-startup>  
        </servlet>  
        <servlet-mapping>  
            <servlet-name>spring</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>    
             
           <servlet-name>spring</servlet-name>     
        </filter-mapping>    
          
        <context-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:applicationContext.xml</param-value>  
        </context-param>  
    </web-app>  <span style="font-family: Arial, Helvetica, sans-serif;"> </span>

**spring-servlet.java**

<?xml version="1.0" encoding="UTF-8"?>  
    <beans xmlns="http://www.springframework.org/schema/beans"  
        xmlns:mvc="http://www.springframework.org/schema/mvc" 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-4.0.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.springmvc.control" />  
      
          
        <bean  
            class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />  
      
      
          
          
        <mvc:resources location="/*.html" mapping="/**.html" />  
        <mvc:resources location="/css/*" mapping="/css/**" />  
        <mvc:resources location="/js/*" mapping="/js/**" />  
        <mvc:resources location="/images/*" mapping="/images/**" />  
      
          
        <bean  
            class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
            <property name="prefix" value="/jsp/" />  
            <property name="suffix" value=".jsp" />  
        </bean>  
      
          
        <bean id="mappingJacksonHttpMessageConverter"  
            class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
            <property name="supportedMediaTypes">  
                <list>  
                    <value>text/html;charset=UTF-8</value>  
                </list>  
            </property>  
        </bean>  
      
          
        <bean  
            class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
            <property name="messageConverters">  
                <list>  
                    <ref bean="mappingJacksonHttpMessageConverter" />  
                </list>  
            </property>  
        </bean>  
    </beans>

**UserController.java**

package com.springmvc.control;  
      
    import javax.annotation.Resource;  
    import javax.ws.rs.PathParam;  
    import javax.ws.rs.Produces;  
      
    import org.springframework.context.annotation.Scope;  
    import org.springframework.stereotype.Controller;  
    import org.springframework.stereotype.Repository;  
    import org.springframework.ui.Model;  
    import org.springframework.web.bind.annotation.PathVariable;  
    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.ResponseBody;  
    import org.springframework.web.servlet.ModelAndView;  
    import com.springmvc.model.User;  
    import com.springmvc.service.UserService;  
    /** 
     * Scope：表示实例是原型，这样会对每一个请求实例化，保证线程安全 Spring中使用 Controller注解表示该类是控制器 
     * Repository注解Dao访问类 Service注解业务逻辑处理类 Resource注解表示使用某个bean资源 
     * RequestMapping：表示对该类所有方法的请求URL，前面必须接上/user，如/user/login 表示对login方法的请求访问 
     *  
     * @author Administrator 
     *  
     */  
    @Scope("prototype")  
    @Controller  
    @RequestMapping("/user")  
    public class UserControl {  
        @Resource(name = "userService")  
        private UserService userService;  
        private String message;  
        /** 
         *  
         * Spring MVC中使用RequestMapping处理URL请求， 
         *     GET：表示查询；POST：表示添加操作 
         *     PUT：表示修改操作；DELETE：表示删除操作 
         * ResponseBody：表示返回对象或者值; 
         * consumes: 表示前端传过来的数据格式; 
         * produces：表示返回数据格式 
         */  
        @RequestMapping(value = "/login", method = RequestMethod.GET, consumes = "application/json", produces = "application/json")  
        @ResponseBody  
        public User login(User user, Model model) {  
            // System.out.println(user.getUsername());  
            User u = userService.findUserByNameAndPassword(user);  
            return u;  
        }    
        @RequestMapping(value = "/addUser", method = RequestMethod.POST, produces = "application/json")  
        @ResponseBody  
        public String addUser(User user) {  
            boolean flag = userService.addUser(user);  
            if (flag) {  
                message = "success";  
            } else {  
                message = "error";  
            }  
            return message;  
        }  
      
        /** 
         * PathVariable:注解方法参数，表示该参数变量值是通过URL传递的 
         * URL中必须包含该参数变量名，变量名需要相同才能完成变量传递注入 
         */  
        @RequestMapping(value = "/deleteUser/{id}", method = RequestMethod.DELETE, produces = "application/json")  
        @ResponseBody  
        public String deleteUser(@PathVariable Integer id) {  
            boolean flag = userService.deleteUser(id);  
            if (flag) {  
                message = "success";  
            } else {  
                message = "error";  
            }  
            return message;  
        }  
      
        public void setUserService(UserService userService) {  
            this.userService = userService;  
        }  
        public UserService getUserService() {  
            return userService;  
        }  
    }

前端JSP页面Ajax请求

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>  
    <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>  
    <%  
        String path = request.getContextPath();  
        String basePath = request.getScheme() + "://"  
                + request.getServerName() + ":" + request.getServerPort()  
                + path + "/";  
    %>  
      
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
    <html>  
    <head>  
    <base href="<%=basePath%>">  
      
    <title>My JSP 'index.jsp' starting page</title>  
    <meta http-equiv="pragma" content="no-cache">  
    <meta http-equiv="cache-control" content="no-cache">  
    <meta http-equiv="expires" content="0">  
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
    <meta http-equiv="description" content="This is my page">  
      
      
      
    <script type="text/javascript"  
        src="js/jquery-easyui-1.4.4//jquery.min.js"></script>  
    <script type="text/javascript">  
        $(document).ready(  
                function() {  
                    $("#btnQuery").click(  
                            function() {  
                                var username = $("#username").val();  
                                var password = $("#password").val();  
                                var data = {  
                                    "username" : username,  
                                    "password" : password  
                                };  
                                // alert(JSON.stringify(data));  
                                $.ajax({  
                                    type : "GET",  
                                    url : "user/login",  
                                    dataType : "json", //后台返回值类型  
                                    data : data,  
                                    beforeSubmit : function() {  
      
                                    },  
                                    success : function(data) {  
                                        alert(data.username + " " + data.password  
                                                + " " + data.address + " "  
                                                + data.tel);  
      
                                    },  
                                    error : function(data) {  
                                        alert("error");  
                                    }  
                                });  
                            });  
                    $("#btnAdd").click(  
                            function() {  
                                var username = $("#username").val();  
                                var password = $("#password").val();  
                                var address = $("#address").val();  
                                var tel = $("#tel").val();  
                                var data = {  
                                    "username" : username,  
                                    "password" : password,  
                                    "address" : address,  
                                    "tel" : tel  
                                };  
                                  
                                $.ajax({  
                                    type : "POST",  
                                    url : "user/addUser",  
                                    dataType : "json", //后台返回值类型  
                                    data : data,  
                                    beforeSubmit : function() {  
      
                                    },  
                                    success : function(data) {  
                                        if(data == 'success') {  
                                            alert("添加成功");  
                                        }else {  
                                            alert("添加失败");  
                                        }  
                                    },  
                                    error : function(data) {  
                                        alert("error");  
                                    }  
                                });  
                            });  
                      
                      
                    $("#btnDel").click(  
                            function() {  
                                var id = $("#id").val();  
                                $.ajax({  
                                    type : "DELETE",  
                                    url : "user/deleteUser/"+id,  
                                    dataType : "json", //后台返回值类型  
                                    beforeSubmit : function() {  
      
                                    },  
                                    success : function(data) {  
                                        if(data == 'success') {  
                                            alert("删除成功");  
                                        }else {  
                                            alert("删除失败");  
                                        }  
                                    },  
                                    error : function(data) {  
                                        alert("error");  
                                    }  
                                });  
                            });  
                });  
    </script>  
    </head>  
      
    <body>  
          
         
        用户名：  
        <input type="text" id="username" value="xx">  
        <br> 密码：  
        <input type="password" id="password" value="1233">  
        <br>  
        <a href="javascript:void(0)" id="btnQuery">查询</a>  
          
        <br>  
          
        用户名：  
        <input type="text" id="username" value="张三图">  
        <br> 密码：  
        <input type="password" id="password" value="1233">  
        <br> 地址：  
        <input type="text" id="address" value="安徽天长">  
        <br> 联系方式：  
        <input type="password" id="tel" value="1232333">  
        <br>  
        <input type="button" id="btnAdd" value="提交">  
      
        <br>  
          
        <input type="text" id="id" value="51">  
        <input type="button" id="btnDel" value="删除">  
          
        <%--  
         <form:form action="user/login" method="post">  
                     用户名：<input type="text" name="username" value="xx"><br>  
                       密码：    <input type="password" name="password" value="1233"><br>  
                           用户名：<input type="text" name="address" value="ss"><br>  
                       密码：    <input type="password" name="tel" value="1232333"><br>  
            <input type="submit" value="提交">  
         </form:form>  
           
          --%>  
        <%--<form:form action="user/deleteUser/50" method="delete">  
            <input type="submit" value="提交">  
         </form:form>  
      --%>  
    </body>  
    </html>

HTTP请求中本身是不支持PUT和DELETE method方法请求的，本文在web.xml中添加了过滤器处理该部分请求，并且通过Ajax发送请求。但是Spring MVC本身也提供了<form:form>标签，通过表单提交的方式发送Restful请求，如上面代码中注释内容所示。只需要在页面前面导入标签库即可。

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>