@ResponseBody、@RequestBody两个注解主要满足开发人员使用SpringMVC框架，
在前后台传输和接收json格式的数据的使用
1.创建Web工程准备好环境（导入jar包 配置Springmcv.xml文件）
2.编写login.html页面
<%@ 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>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.11.0.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head><script type="text/javascript">
function chuanJson(){// json对象var jsonObj = {username:"张三",age:"12",phone:"123456789",address:"天津市"};var user = JSON.stringify({username:"张三",age:"12",phone:"123456789",address:"天津市"});user.toJSONString();alert(user);$.ajax({type:'post',url:'${pageContext.request.contextPath}/rest/user/aa/Requestparam.do',contentType: "application/json", data:user,dataType:'json',success:function(mm){alert(mm);}});
}
</script>
<body>
<!-- 传递json串 --><input type="button" οnclick="chuanJson();" value="提交">
<hr >
</body>
</html>注意：使用ajax请求需要引入jquery的js包
3.编写springmvc配置文件
3.1 手动添加json数据支持的配置
<?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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"><!-- 配置扫描 --><context:component-scan base-package="com.zit.controller"></context:component-scan><!-- <mvc:annotation-driven/> --><!-- 配置注解处理器映射器 功能：寻找执行类Controller--><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean><!-- 配置注解处理器适配器 功能：调用controller方法，执行controller--><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"><!-- 此处添加json数据格式的数据支持， --><property name="messageConverters"><bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean></property></bean><!-- 配置sprigmvc视图解析器：解析逻辑试图 后台返回逻辑试图：index视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/jsps/index.jsp--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property> </bean></beans>3.2 使用<mvc:annotation-driven/>代替 对处理器映射器和处理器适配器 的配置
<?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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"><!-- 配置扫描 --><context:component-scan base-package="com.zit.controller"></context:component-scan><mvc:annotation-driven/><!-- 配置注解处理器映射器 功能：寻找执行类Controller--><!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"></bean> --><!-- 配置注解处理器适配器 功能：调用controller方法，执行controller--><!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">此处添加json数据格式的数据支持，<property name="messageConverters"><bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean></property></bean> --><!-- 配置sprigmvc视图解析器：解析逻辑试图 后台返回逻辑试图：index视图解析器解析出真正物理视图：前缀+逻辑试图+后缀====/WEB-INF/jsps/index.jsp--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/pages/"></property><property name="suffix" value=".jsp"></property> </bean></beans>4. 编写执行类
package com.zit.controller;import java.util.ArrayList;
import java.util.List;import org.springframework.stereotype.Controller;
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.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;import com.zit.entity.User;
import com.zit.entity.WrapObject;@Controller
@RequestMapping("/user")
public class UserController {
/*** 接受json格式数据* @param id* @return*/@RequestMapping("/aa/Requestparam")public @ResponseBody User jsonRequest(@RequestBody User user){System.out.println("121212");System.out.println(user.getAddress());//重定向return user;}
}