jquery zTree异步加载简单实例分享
jquery zTree异步加载简单实例分享
发布时间:2016-12-30 来源:查字典编辑
摘要:首先提供Ztree官方网站http://www.ztree.me。Ztree是一个使用jQuery实现的JSP页面的各种功能树,本文介绍一个...

首先提供Ztree官方网站http://www.ztree.me。

Ztree是一个使用jQuery实现的JSP页面的各种功能树,本文介绍一个异步获取数据到下拉树的实现方式。

当前版本Ztree 3.5.01

simple.html

复制代码 代码如下:

<!DOCTYPE html>

<html>

<head>

<title>simple.html</title>

<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

<meta http-equiv="description" content="this is my page">

<meta http-equiv="content-type" content="text/html; charset=UTF-8">

<link rel="stylesheet" type="text/css" href="css/zTreeStyle.css">

<script type="text/javascript" src="js/jquery.js"></script>

<script type="text/javascript" src="js/jquery.ztree.core-3.5.js"></script>

<script type="text/javascript" src="js/jquery.ztree.excheck-3.5.min.js"></script>

<>

<script type="text/javascript" src="js/1.js"></script>

</head>

<body>

<div><ul id="treeDemo"></ul></div>

</body>

</html>

js

复制代码 代码如下:

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<l; 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

复制代码 代码如下:

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<ZtreeBean> list = new ArrayList<ZtreeBean>();

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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