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: