struts2返回json数据类型

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项目需要jar包

项目结构

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><!-- 定义Struts2的FilterDispathcer的Filter --><filter><filter-name>struts2</filter-name><filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class></filter><!-- FilterDispatcher用来初始化Struts2并且处理所有的WEB请求。 --><filter-mapping><filter-name>struts2</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>

struts.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN""http://struts.apache.org/dtds/struts-2.0.dtd"><struts><!-- 配置了系列常量 --><constant name="struts.i18n.encoding" value="UTF-8" /><package name="wangzs" extends="json-default"><action name="userAction" class="com.wzs.action.UserAction"><result name="success" type="json"><param name="root">result</param></result></action><!-- 让用户直接访问该应用时列出所有视图页面 --><action name=""><result>.</result></action></package></struts>

testJson.jsp

<%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><title>test json</title><script type="text/javascript" src="scripts/jquery-1.8.js"></script><script type="text/javascript">$(function() {$("#testJson").click(function() {$.ajax({type : "post",url : "userAction",data : {name : $("#name").val(),age : $("#age").val(),address : $("#address").val()},dataType : "json",success : function(data) {var d = eval("(" + data + ")");//将数据转换成json类型$("#s_name").text("" + d.name + "");$("#s_age").text("" + d.age + "");$("#s_address").text("" + d.address + "");},error : function() {alert("系统异常，请稍后重试！");}});});})</script></head><body>This is wangzs page.<br><table border="1"><tr><td>用户名：</td><td><input type="text" name="name" id="name" /></td></tr><tr><td>年龄：</td><td><input type="text" name="age" id="age" /></td></tr><tr><td>地址：</td><td><input type="text" name="address" id="address" /></td></tr><tr><td colspan="2"><input type="button" value="测试json" id="testJson" /></td></tr></table><br /><ul><li>姓名：<span id="s_name">赞无数据</span></li><li>年龄：<span id="s_age">暂无数据</span></li><li>职务：<span id="s_address">暂无数据</span></li></ul></body></html>

UserAction.java

package com.wzs.action;import java.util.HashMap;import java.util.Map;import net.sf.json.JSONObject;import com.opensymphony.xwork2.ActionSupport;public class UserAction extends ActionSupport {private String name;private String age;private String address;private String result;@Overridepublic String execute() throws Exception {Map<String, String> map = new HashMap<String, String>();map.put("name", getName());map.put("age", getAge());map.put("address", getAddress());JSONObject jsonObject = JSONObject.fromObject(map);// 将map对象转换成json类型数据result = jsonObject.toString();// 给result赋值，传递给页面return SUCCESS;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getAge() {return age;}public void setAge(String age) {this.age = age;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String getResult() {return result;}public void setResult(String result) {this.result = result;}}

项目源码下载：http://download.csdn.net/detail/adam_zs/7452839

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