ajax+json+Struts2实现list传递（转载）

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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)

/**  *@Project: excel  *@Author: chenssy  *@Date: 2013-4-4  *@Copyright: chenssy All rights reserved.  */  public class ErrorCondition {      private String name; // 姓名      private String idCard; // 身份证      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>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">      <!-- 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：

0 0