ajax+json+Struts2实现list传递

ajax+json+Struts2实现list传递（转载）

一、首先需要下载JSON依赖的jar包。它主要是依赖如下：

json-lib-2.2.2-jdk15

ezmorph-1.0.4 commons-logging-1.0.4 commons-lang-2.4 commons-collections-3.2.1

commons-beanutils

二、实例。

1、身份证错误信息Bean类(ErrorCondition.java)

2、JSP页面(index.jsp)

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<head>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.7.2.js"></script>
</head>
<body>
<input type="button" value="点我显示数据" id="clickMe">
<table id="showTable" border="1">
<tr>
<td>姓名</td>
<td>身份证</td>
<td>错误状态</td>
<td>错误信息</td>
</tr>
</table>
<script>
$("#clickMe").click(function(){
var url = "json/jsonTest.action";
$.ajax({
type:'get',
url:url,
dataType: 'json',
success:function(data){
$.each(data,function(i,list){
var _tr = $("<tr><td>"+list.name+"</td><td>"+
list.idCard+"</td><td>"+list.status+
"</td><td>"+list.message+"</td></tr>");
$("#showTable").append(_tr);
})
}
})
})
</script>
</body>
</html>

3、Action处理类(JsonTest_01.java)

/**
*@Project: jsonTest
*@Author: chenssy
*@Date: 2013-4-5
*@Copyright: chenssy All rights reserved.
*/
public class JsonTest_01 {
public String execute() throws IOException{
ErrorCondition r1 = new ErrorCondition("张三", "4306821989021611", "L", "长度错误");
ErrorCondition r2 = new ErrorCondition("李四", "430682198902191112","X", "校验错误");
ErrorCondition r3 = new ErrorCondition("王五", "", "N", "身份证信息为空");
List<ErrorCondition> list = new ArrayList<ErrorCondition>();
list.add(r1);
list.add(r2);
list.add(r3);
//将list转化成JSON对象
JSONArray jsonArray = JSONArray.fromObject(list);
HttpServletResponse response = (HttpServletResponse) ActionContext.getContext().get(ServletActionContext.HTTP_RESPONSE);
response.setCharacterEncoding("UTF-8");
response.getWriter().print(jsonArray);
return null;
}
}

4、struts.xml配置

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<package name="json" namespace="/json" extends="struts-default">
<action name="jsonTest" class="com.json.action.JsonTest_01" method="execute"></action>
</package>
</struts>

三、运行结果

开始页面如下：

当点击按钮后

返回的结果如下：