ztree异步加载实例

当前版本Ztree 3.5.01

simple.html

js

var setting = {

data: {

simpleData: {

enable: true

//        idKey:"id",

//        pIdKey:"pId",

}

}

,async: {

enable: true,

url:"/Java_Solr/servlet/ZTreeSerlvet",

autoParam:["id", "name"],

otherParam:{"otherParam":"zTreeAsyncTest"},

//        dataType: "text",//默认text

//        type:"get",//默认post

dataFilter: filter  //异步返回后经过Filter

}

,callback:{

//              beforeAsync: zTreeBeforeAsync,      // 异步加载事件之前得到相应信息

asyncSuccess: zTreeOnAsyncSuccess,//异步加载成功的fun

asyncError: zTreeOnAsyncError,  //加载错误的fun

beforeClick:beforeClick //捕获单击节点之前的事件回调函数

}

};

//treeId是treeDemo

function filter(treeId, parentNode, childNodes) {

if (!childNodes) return null;

for (var i=0, l=childNodes.length; i

childNodes[i].name = childNodes[i].name.replace('','');

}

return childNodes;

}

function beforeClick(treeId,treeNode){

if(!treeNode.isParent){

alert("请选择父节点");

return false;

}else{

return true;

}

}

function zTreeOnAsyncError(event, treeId, treeNode){

alert("异步加载失败!");

}

function zTreeOnAsyncSuccess(event, treeId, treeNode, msg){

}

/***********************当你点击父节点是,会异步访问servlet,把id传过去*****************************/

var zNodes=[];

/*        var zNodes =[

{ id:1, pId:0, name:"parentNode 1", open:true},

{ id:11, pId:1, name:"parentNode 11"},

{ id:111, pId:11, name:"leafNode 111"},

{ id:112, pId:11, name:"leafNode 112"},

{ id:113, pId:11, name:"leafNode 113"},

{ id:114, pId:11, name:"leafNode 114"},

{ id:12, pId:1, name:"parentNode 12"},

{ id:121, pId:12, name:"leafNode 121"},

{ id:122, pId:12, name:"leafNode 122"},

{ id:123, pId:12, name:"leafNode 123"},

{ id:13, pId:1, name:"parentNode 13", isParent:true},

{ id:2, pId:0, name:"parentNode 2", isParent:true}

];  */

$(document).ready(function(){

$.fn.zTree.init($("#treeDemo"), setting, zNodes);

});

得到zTree对象 :var zTree = $.fn.zTree.getZTreeObj("treeDemo"),

ZtreeServlet

package org.hzy.servlets;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.ArrayList;

import java.util.List;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.hzy.bean.ZtreeBean;

import com.alibaba.fastjson.JSON;

public class ZTreeSerlvet extends HttpServlet {

public void destroy() {

super.destroy();

}

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

System.out.println(request.getParameter("id") + "  " + request.getParameter("name") + "  " + request.getParameter("otherParam"));

response.setCharacterEncoding("UTF-8");

PrintWriter out = response.getWriter();

ZtreeBean zb = new ZtreeBean(0, -1, "zb", true);

ZtreeBean zb1 = new ZtreeBean(1, 0, "zb1", true);

ZtreeBean zb2 = new ZtreeBean(2, 1, "zb2", false);

ZtreeBean zb3 = new ZtreeBean(2, 0, "zbss", true);

List list = new ArrayList();

list.add(zb);

list.add(zb1);

list.add(zb2);

list.add(zb3);

String str = JSON.toJSONString(list);

out.print(str);

}

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

doGet(request, response);

}

public void init() throws ServletException {

}

}

 

   

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