一 环境搭建
首先是常规的spring mvc环境搭建，不用多说，需要注意的是，这里需要引入jackson相关jar包，然后在spring配置文件“springmvc-servlet.xml”中添加json解析相关配置，我这里的完整代码如下：
<?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" xmlns:mvc="http://www.springframework.org/schema/mvc" 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"> <!-- 避免IE执行AJAX时,返回JSON出现下载文件 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>text/html;charset=UTF-8</value> <value>application/json;charset=UTF-8</value> </list> </property> <property name="objectMapper"> <bean class="org.codehaus.jackson.map.ObjectMapper"> <property name="dateFormat"> <bean class="java.text.SimpleDateFormat"> <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss"></constructor-arg> </bean> </property> </bean> </property> </bean> <!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> <property name="messageConverters"> <list> <ref bean="mappingJacksonHttpMessageConverter" /><!-- json转换器 --> </list> </property> </bean> <mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" /> <bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean"> <!-- true，开启扩展名支持，false关闭支持 --> <property name="favorPathExtension" value="false" /> <!-- 用于开启 /userinfo/123?format=json的支持 --> <property name="favorParameter" value="true" /> <!-- 设置为true以忽略对Accept Header的支持 --> <property name="ignoreAcceptHeader" value="false" /> <property name="mediaTypes"> <value> atom=application/atom+xml html=text/html json=application/json xml=application/xml *=*/* </value> </property> </bean> <context:annotation-config /> <!-- 启动自动扫描该包下所有的Bean(例如@Controller) --> <context:component-scan base-package="cn.zifangsky.controller" /> <mvc:default-servlet-handler /> <!-- 定义视图解析器 --> <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="requestContextAttribute" value="rc" /> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" /> <property name="prefix" value="/WEB-INF/jsp/" /> <property name="suffix" value=".jsp" /> <property name="order" value="1"></property> </bean></beans>
项目结构：
注：我这里测试使用的完整jar包：http://pan.baidu.com/s/1dEUwdmL
仅供参考
二 测试实例
（1）在WEB-INF/jsp目录下新建了一个index.jsp文件，包含了简单的jQuery的ajax请求，请求数据的格式是JSON，具体代码如下：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";%><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><base href="<%=basePath%>"><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery-1.6.2.min.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery.i18n.properties-min-1.0.9.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery.autocomplete.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery.loadmask.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery.form.js"></script><script type="text/javascript" class="lazyload" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB/AAffA0nNPuCLAAAAAElFTkSuQmCC" data-original="scripts/jquery/jquery.timers.js"></script><title>jQuery i18n</title><script type="text/javascript"> $().ready( function() { $("#sub").click( function() { var name = $("#username").val(); var age = 18; var user = {"username":name,"age":age}; $.ajax({ url : 'hello.json', type : 'POST', data : JSON.stringify(user), // Request body contentType : 'application/json; charset=utf-8', dataType : 'json', success : function(response) { //请求成功 alert("你好" + response.username + "[" + response.age + "]，当前时间是：" + response.time + "，欢迎访问：http://www.zifangsky.cn"); }, error : function(msg) { alert(msg); } }); }); });</script></head><body> <input type="text" id="username" style="width: 100px; height: 30px; font-size: 20px; font-weight: bold;"> <input type="button" id="sub" value="Go" style="height: 40px; height: 30px;"> <br></body></html>（2）一个简单的model类User，代码如下：
package cn.zifangsky.controller;public class User { private String username; private int age; public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }（3）controller类TestController.java：
package cn.zifangsky.controller;import java.text.Format;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Controller;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;@Controller@Scope("prototype")public class TestController { /** * 转到页面 */ @RequestMapping(value = "/hello.html") public ModelAndView list() { ModelAndView view = new ModelAndView("index"); return view; } /** * ajax异步请求， 请求格式是json */ @RequestMapping(value = "/hello.json", method = { RequestMethod.POST }) @ResponseBody public Map<String, String> hello(@RequestBody User user) { // 返回数据的Map集合 Map<String, String> result = new HashMap<String, String>(); Format format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 返回请求的username result.put("username", user.getUsername()); // 返回年龄 result.put("age", String.valueOf(user.getAge())); // 返回当前时间 result.put("time", format.format(new Date())); return result; }}关于具体的执行步骤我简单说一下：
i）项目启动后，在浏览器中访问：http://localhost:8089/SpringDemo/hello.html，然后会转到执行controller中的list方法，接着会转到/WEB-INF/jsp/index.jsp（PS：在controller中返回的是逻辑视图，跟在springmvc-servlet.xml文件中定义的路径前缀和后缀进行拼接后合成文件的真正路径）
ii）在index.jsp页面输入文字然后点击按钮，将会触发ajax请求，这个请求会获取输入框中的数据和默认的“age”参数拼接成json格式字符串最后提交到“hello.json”这个请求，也就是执行controller中的hello方法
iii）hello方法执行完毕后会返回一系列数据最后在页面中显示出来
点击查看更多内容
为 TA 点赞
评论
共同学习，写下你的评论
评论加载中...
作者其他优质文章
正在加载中
感谢您的支持，我会继续努力的～
扫码打赏，你说多少就多少
赞赏金额会直接到老师账户
支付方式
打开微信扫一扫，即可进行扫码打赏哦