jquery zTree异步加载简单实例讲解

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本文实例讲解了jquery zTree异步加载,分享给大家供大家参考,具体内容如下

web.xml中Servlet配置如下:

<"1.0" encoding="UTF-8""2.4"  
  xmlns="http://java.sun.com/xml/ns/j2ee"  
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee  
  http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> 
   
   
  <servlet> 
    <servlet-name>getDataServlet</servlet-name>;  
    <servlet-class>testTree.TestTree</servlet-class>;  
  </servlet> 
   
  <servlet-mapping> 
  <servlet-name>getDataServlet</servlet-name>;  
  <url-pattern>/getData</url-pattern>;  
  </servlet-mapping> 
 
</web-app> 

JSP页面:

<!DOCTYPE html> 
<HTML> 
<HEAD> 
  <TITLE> ZTREE DEMO - Simple Data</TITLE> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8"> 
  <link rel="stylesheet" href="css/demo.css" type="text/css"> 
  <link rel="stylesheet" href="css/zTreeStyle/zTreeStyle.css" type="text/css"> 
  <script type="text/javascript" src="/UploadFiles/2021-04-02/jquery-1.4.4.min.js">

 Action代码:

public class TestTree extends HttpServlet { 
 
  @Override 
  public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
//   System.out.println("--------doGet--------"); 
    this.doPost(request, response); 
  } 
 
  @Override 
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
//   System.out.println("--------doPost--------"); 
    String id = request.getParameter("id"); 
    String name = request.getParameter("name"); 
    String level = request.getParameter("level"); 
    String otherParam = request.getParameter("otherParam"); 
    System.out.println(id + "|" + name + "|" + level + "|" + otherParam); 
     
    JSONObject json = new JSONObject(); 
    List<HashMap<String,Object list = new ArrayList<HashMap<String,Object(); 
     
    for(int i = 0; i < 5; i++){ 
      HashMap<String,Object> hm = new HashMap<String,Object>();  //最外层,父节点       
      hm.put("id", id + i);//id属性 ,数据传递  
      hm.put("name", id + i); //name属性,显示节点名称  
      hm.put("pId", id); 
       
      list.add(hm); 
    } 
     
    JSONArray arr = new JSONArray(list); 
    json.put("success", true); 
    json.put("arr", arr); 
     
    System.out.println("--------json------" + json.toString()); 
    response.getWriter().write(arr.toString()); 
//   response.getWriter().write(json.toString()); 
//   response.getWriter().write("[{pId:'2',name:'20',id:'20'}]"); 
  } 
 
} 

以上就是jquery zTree异步加载实例分享给大家,希望对大家学习异步加载技术有所帮助。

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