jquery ztree 异步动态加载

package com.servlet; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class getNode extends HttpServlet { /** * Constructor of the object. */ public getNode() { super(); } /** * Destruction of the servlet. <br> */ public void destroy() { super.destroy(); // Just puts "destroy" string in log // Put your code here } /** * The doGet method of the servlet. <br> * * This method is called when a form has its tag value method equals to get. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } /** * The doPost method of the servlet. <br> * * This method is called when a form has its tag value method equals to post. * * @param request the request send by the client to the server * @param response the response send by the server to the client * @throws ServletException if an error occurred * @throws IOException if an error occurred */ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); String id = request.getParameter("id"); System.out.println(id+"===="); if(id==null){ String msg = "[{ id:'01', name:'n1', isParent:true,open:true,iconOpen:'css/zTreeStyle/img/diy/1_open.png',iconClose:'css/zTreeStyle/img/diy/1_close.png'}]"; out.println(msg.toString()); System.out.println(msg); } if("01".equals(id)){ String msg = "[{ id:'031',name:'n3.1',isParent:true,test:'11|222'},{ id:'032',name:'n3.2',isParent:true,test:'11|222'},{ id:'02', name:'n2', isParent:false},{ id:'03', name:'n3', isParent:true},{ id:'04', name:'n4', isParent:false}]"; out.println(msg.toString()); System.out.println(msg.toString()); } out.flush(); out.close(); } /** * Initialization of the servlet. <br> * * @throws ServletException if an error occurs */ public void init() throws ServletException { // Put your code here } }