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ajax+json+Struts2实现list传递（转载）

2015-01-20 15:16 357 查看

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、***错误信息Bean类(ErrorCondition.java)

/** 
 *@Project: excel 
 *@Author: chenssy 
 *@Date: 2013-4-4 
 *@Copyright: chenssy All rights reserved. 
 */  
public class ErrorCondition {  
    private String name; // 姓名  
    private String idCard; // ***  
    private String status; // 错误状态  
    private String message; // 错误信息  
  
    ErrorCondition(String name,String idCard,String status,String message){  
        this.name = name;  
        this.idCard = idCard;  
        this.status = status;  
        this.message = message;  
    }  
      
    public String getName() {  
        return name;  
    }  
  
    public void setName(String name) {  
        this.name = name;  
    }  
  
    public String getIdCard() {  
        return idCard;  
    }  
  
    public void setIdCard(String idCard) {  
        this.idCard = idCard;  
    }  
  
    public String getStatus() {  
        return status;  
    }  
  
    public void setStatus(String status) {  
        this.status = status;  
    }  
  
    public String getMessage() {  
        return message;  
    }  
  
    public void setMessage(String message) {  
        this.message = message;  
    }  
  
}

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>***</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", "***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">  
    <!-- 指定struts 2的配置文件的跟元素  -->  
<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：

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