jquery zTree异步加载实例

Posted 2020-10-08 青小稞

jquery zTree异步加载实例

web.xml中Servlet配置如下：

[html]

 1   <?xml version="1.0" encoding="UTF-8"?>  
 2     <web-app version="2.4"   
 3         xmlns="http://java.sun.com/xml/ns/j2ee"   
 4         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
 5         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   
 6         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  
 7           
 8           
 9         <servlet>  
10             <servlet-name>getDataServlet</servlet-name>;   
11             <servlet-class>testTree.TestTree</servlet-class>;   
12         </servlet>  
13           
14         <servlet-mapping>  
15         <servlet-name>getDataServlet</servlet-name>;   
16         <url-pattern>/getData</url-pattern>;   
17         </servlet-mapping>  
18       
19     </web-app>  

 

 

 

JSP页面：

 1   <?xml version="1.0" encoding="UTF-8"?>  
 2     <web-app version="2.4"   
 3         xmlns="http://java.sun.com/xml/ns/j2ee"   
 4         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"   
 5         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   
 6         http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">  
 7           
 8           
 9         <servlet>  
10             <servlet-name>getDataServlet</servlet-name>;   
11             <servlet-class>testTree.TestTree</servlet-class>;   
12         </servlet>  
13           
14         <servlet-mapping>  
15         <servlet-name>getDataServlet</servlet-name>;   
16         <url-pattern>/getData</url-pattern>;   
17         </servlet-mapping>  
18       
19     </web-app>  

 

 

Action代码：

 1 [java] view plain copy
 2 
 3         public class TestTree extends HttpServlet {  
 4           
 5             @Override  
 6             public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {  
 7         //      System.out.println("--------doGet--------");  
 8                 this.doPost(request, response);  
 9             }  
10           
11             @Override  
12             public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {  
13         //      System.out.println("--------doPost--------");  
14                 String id = request.getParameter("id");  
15                 String name = request.getParameter("name");  
16                 String level = request.getParameter("level");  
17                 String otherParam = request.getParameter("otherParam");  
18                 System.out.println(id + "|" + name + "|" + level + "|" + otherParam);  
19                   
20                 JSONObject json = new JSONObject();  
21                 List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>();  
22                   
23                 for(int i = 0; i < 5; i++){  
24                     HashMap<String,Object> hm = new HashMap<String,Object>();   //最外层，父节点             
25                     hm.put("id", id + i);//id属性  ，数据传递    
26                     hm.put("name", id + i); //name属性，显示节点名称    
27                     hm.put("pId", id);  
28                       
29                     list.add(hm);  
30                 }  
31                   
32                 JSONArray arr = new JSONArray(list);  
33                 json.put("success", true);  
34                 json.put("arr", arr);  
35                   
36                 System.out.println("--------json------" + json.toString());  
37                 response.getWriter().write(arr.toString());  
38         //      response.getWriter().write(json.toString());  
39         //      response.getWriter().write("[{pId:‘2‘,name:‘20‘,id:‘20‘}]");  
40             }  
41           
42         }