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Spring MVC系列:(11)返回JSON
1、引入jar包
jackson-core-asl-1.9.11.jar
jackson-mapper-asl-1.9.11.jar
2、配置springmvc.xml
<!-- 基于注解的适配器 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean> </list> </property> </bean>
3、Action代码
@RequestMapping(value="http://www.mamicode.com/test") public @ResponseBody User test() throws Exception{ User user = new User(); user.setId(99); user.setName("小明"); user.setSal(8888.88); user.setHiredate(new Date()); return user; }
4、JSP页面
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta name="content-type" content="text/html; charset=UTF-8"> <title>Index Page</title> <script type="text/javascript" src="http://www.mamicode.com/${pageContext.request.contextPath}/js/jquery-1.12.3.js"></script> <script type="text/javascript"> $(function(){ $(‘#btn‘).click(function(){ $.ajax({ "url":"${pageContext.request.contextPath}/user/test.action", success:function(result){ var str = ""; str += result.id + "\n"; str += result.name + "\n"; str += result.sal + "\n"; str += result.hiredate + "\n"; var millisec = result.hiredate; var date = new Date(); date.setTime(millisec); str += date.getFullYear() + "-" + date.getMonth() + "-" + date.getDate(); alert(str); } }); }); }); </script> </head> <body> <input id="btn" type="button" value="http://www.mamicode.com/GetJson"/> </body> </html>
完整的UserAction.java
package com.rk.action; import java.text.SimpleDateFormat; import java.util.Date; import org.springframework.beans.propertyeditors.CustomDateEditor; import org.springframework.stereotype.Controller; import org.springframework.web.bind.ServletRequestDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.rk.entity.User; @Controller @RequestMapping(value="http://www.mamicode.com/user") public class UserAction { @InitBinder private void initBinder(ServletRequestDataBinder binder){ binder.registerCustomEditor( Date.class, new CustomDateEditor(new SimpleDateFormat("yyyy-MM-dd"), true)); } @RequestMapping(value="http://www.mamicode.com/delete") public String delete(int id) throws Exception{ System.out.println("删除用户->" + id); //转发到find(int) //return "forward:/user/find.action"; //重定向到find(int) return "redirect:/user/find.action?id=4"; } @RequestMapping(value="http://www.mamicode.com/test") public @ResponseBody User test() throws Exception{ User user = new User(); user.setId(99); user.setName("小明"); user.setSal(8888.88); user.setHiredate(new Date()); return user; } }
完整的springmvc.xml
<?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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- <import resource="com/rk/config/spring-test.xml"/> --> <!-- Action控制器 --> <context:component-scan base-package="com.rk.action"></context:component-scan> <!-- 基于注解的映射器(可选) --> <bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"/> <!-- 基于注解的适配器 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean> </list> </property> </bean> <!-- 视图解析器(可选) --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"/> </beans>
Spring MVC系列:(11)返回JSON
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