struts2 Json 学习笔记_struct2json-master 笔记-优快云博客

本文详细介绍了如何在Struts2框架中解压缩目录并导入lib文件下的struts2-json-plugin-2.2.1.jar，以及如何在配置文件中引入并使用JSON插件来实现数据序列化和JSON格式输出。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

讲Struts2 解压缩目录的lib文件下的struts2-json-plugin-2.2.1.jar文件复制到web应用的WEB-INF文件下。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<constant name="struts.i18n.encoding" value="UTF-8"></constant>
<package name="example" namespace="/" extends="json-default">
  <action name="getJsonData" class="test.action.JsonAction" method="getJsonData">
   <result type="json">
    <param name="noCache">true</param>
    <param name="contentType">text/html</param>
    <param name="root">dataMap</param>
   </result>
  </action>
  <action name="getJsonData2" class="test.action.JsonAction" method="getJsonData2">
    <result type="json">
     <param name="noCache">true</param>
     <param name="contentType">text/html</param>
     <param name="root">dataMap</param>
    </result>
   </action>
</package>
</struts>
package test.action;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.apache.struts2.ServletActionContext;

import test.pojo.User;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class JsonAction extends ActionSupport {
public JsonAction () {
    dataMap = new HashMap<String, Object>();
}
private Map<String, Object> dataMap ;
public String getJsonData(){

   dataMap.clear();
  System.out.println("ggg*************");
  User user = new User();
  user.setName("yllly");
  user.setAge(10);
  user.setBirDate(new Date());
  dataMap.put("user", user);
      // 放入一个是否操作成功的标识
        dataMap.put("success", true);

  return SUCCESS;
}

public String getJsonData2(){

   dataMap.clear();
  System.out.println("ggg*************");
  User user = new User();
  user.setName("ylll222y");
  user.setAge(10);

  user.setBirDate(new Date());
  dataMap.put("user", user);
      // 放入一个是否操作成功的标识
        dataMap.put("success", true);

  return SUCCESS;
}
public Map<String, Object> getDataMap() {
  return dataMap;
}

}
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
    <base href="<%=basePath%>">

    <title>My JSP 'testJson.jsp' starting page</title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="js/jquery-1.9.0.js"></script>


</head>
<script type="text/javascript">
$(function(){
  $("#json").click(function(){
  $.ajax({
   type : "post",//发送方式
   url : "example/getJsonData",// 路径
   success : function(dataRole) {
    /*var obj = $.parseJSON(dataRole);*/
    var obj = eval("(" + dataRole + ")");
    alert(dataRole);
   }
  });
  })
/****************/
  $("#json2").click(function(){
  $.ajax({
   type : "post",//发送方式
   url : "example/getJsonData2",// 路径
   success : function(dataRole) {
    /*var obj = $.parseJSON(dataRole);*/
    var obj = eval("(" + dataRole + ")");
    alert(obj.user);
   }
  });
  })
});

/* {"jsonData":"success","user":{"age":10,"birDate":"2013-05-22T10:13:11","name":"yy"}} */
</script>
<body>
    This is my JSP page. <br>
    <input type="button" value="testJson" id="json">
    <input type="button" value="testJson" id="json2">
    <div id="testjson"></div>
</body>
</html>