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spring中的RequestMapping的四种请求方式

24.1 新建一个MethodController类
 package com.ask.controller;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 //添加地址;
 @RequestMapping("/user")
 @Controller
 public class MethodController{
 @RequestMapping(value="/get/{id}",method=RequestMethod.GET)
 public String getMethod(@PathVariable("id") int id){
 System.out.println("get "+id);
 return "get";
 } @RequestMapping(value="/post/{id}",method=RequestMethod.POST)
 public String postMethod(@PathVariable("id") int id){
 System.out.println("post "+id);
 return "post";
 }
 @RequestMapping(value="/put/{id}",method=RequestMethod.PUT)
 public String putMethod(@PathVariable("id") int id){
 System.out.println("put "+id);
 return "put";
 } @RequestMapping(value="/delete/{id}",method=RequestMethod.DELETE)
 public String deleteMethod(@PathVariable("id") int id){
 System.out.println("get "+id);
 return "delete";
 }
 }
 24.2 在WEB-INF下的views下新建三个四个jsp文件 get put post delete这里只是写了一个get.jsp文件
 <%@ 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>
 请求方法为get请求
 </body>
 </html>
 24.3 在WEB-INF文件下的下新建一个springmvc-servlet.xml的配置文件
 <?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">
 <!--扫描包-->
 <context:component-scan base-package="com.ask"/>
 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 <property name="prefix" value="/WEB-INF/views/"></property>
 <property name="suffix" value=".jsp"></property>
 </bean>
 </beans>
 24.4 配置web.xml的文件;
 <?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_3_0.xsd" id="WebApp_ID" version="3.0">
 <display-name>springMvc-1</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>
 <!-- 拦截器 -->
 <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>
 <!--这个servlet-name的值要和springmvc-servlet.xml的文件名保持一致-->
 <servlet>
 <servlet-name>springmvc</servlet-name>
 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
 <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
 <servlet-name>springmvc</servlet-name>
 <url-pattern>/</url-pattern>
 </servlet-mapping>
 </web-app>
 24.5 新建一个index.jsp的文件;
 <%@ 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="user/get/100">click get</a>
 <form action="user/post/200" method="post">
 <input type="submit" value="post提交方式">
 </form>
 <form action="user/put/300" method="post">
 <input type="hidden" name="_method" value="PUT">
 <input type="submit" value="put提交方式">
 </form>
 <form action="user/delete/100" method="post">
 <input type="hidden" name="_method" value="DELETE">
 <input type="submit" value="delete提交方式">
 </form>
 </body>
 </html>