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>
<?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>
<%@ 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>
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;
@Override
public 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;
}
}
struts2返回json数据类型,布布扣,bubuko.com
原文：http://blog.csdn.net/adam_wzs/article/details/28661117