参考博客：
https://segmentfault.com/a/1190000004657854
https://blog.csdn.net/houpengfei111/article/details/8696436
https://blog.csdn.net/qq_36785111/article/details/78873488
这里思路是：
先异步加载所有节点，同时判断所有节点是否异步加载完毕，如果所有节点全部加载完毕时设置搜索按钮可点击；
搜索方法根据所有节点进行模糊查询getNodesByParamFuzzy，然后将查找到的节点和其所有父节点显示，其他节点隐藏；
代码：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" href="resources/zTreeStyle/zTreeStyle.css" type="text/css">
<link rel="stylesheet" type="text/css" href="resources/bootstrap/bootstrap.min.css">
<title>index</title>
</head>
<body>
<div class="container">
<h4>Ztree异步加载使用例子</h4>
<input type="text" id="search" /> <input type="button" id="btn" value="搜素" onclick="search()"/>
<ul id="zTree" class="ztree"></ul>
</div>
</body>
<script src="resources/js/jquery.min.js"></script>
<script type="text/javascript" src="resources/js/jquery.ztree.all.min.js"></script>
<script type="text/javascript" src="resources/js/jquery.ztree.exhide.min.js"></script>
<script type="text/javascript">
var setting = {
async: {
enable: true,
url:"asyncGetNodes",
autoParam:["id", "pid", "name"],
dataFilter: filter
},
data:{
simpleData:{
enable: true,
idKey:'id',
pIdKey:'pid',
rootPId: 0
}
},
view:{
showIcon: false
},
callback: {
onAsyncSuccess:onAsyncSuccess
}
};
$(document).ready(function(){
initZTree();
});
/**
* 节点加载完的回调函数，加载方式依旧是分批加载，但是不是等用户展开节点才去加
* 载，而是让它自动完成加载，这里不好的地方是依旧要加载全部数据，所以必须等待
* 它加载完才能使用搜索功能
*/
function onAsyncSuccess(event, treeId, treeNode, msg) {
//console.log('success');
var zTreeObj = $.fn.zTree.getZTreeObj(treeId);
var nodes = zTreeObj.transformToArray(zTreeObj.getNodes());
for (var i = 0; i < nodes.length; i++) {
// 判断节点是否已经加载过，如果已经加载过则不需要再加载
if (!nodes[i].zAsync) {
zTreeObj.reAsyncChildNodes(nodes[i], 'refresh', true);
}
}
}
function filter(treeId, parentNode, childNodes) {
return childNodes;
}
//初始化树
function initZTree(){
$.ajax({
url:"asyncGetNodes",
type:"post",
dataType: "json",
success: function(data){
console.log(data);
var zTreeObj = $.fn.zTree.init($("#zTree"),setting, data);
//让第一个父节点展开
var rootNode_0 = zTreeObj.getNodeByParam('pid',0,null);
zTreeObj.expandNode(rootNode_0, true, false, false, false);
console.log('expended');
//搜索按钮不可用
$('#btn').attr('disabled','disabled');
zTreeAsyncReady('zTree',function(){
console.log('已经全部加载完了');
$('#btn').removeAttr('disabled','disabled');
});
},
error: function(){
}
});
}
//判断树节点是否已经全部加载完
function zTreeAsyncReady(treeId, f){
var zTreeObj = $.fn.zTree.getZTreeObj(treeId);
zTreeAsyncReady.timer = setInterval(function(){
var nodes = zTreeObj.getNodesByFilter(function(node) {
return !node.zAsync;
});
if(nodes.length==0){
clearInterval(zTreeAsyncReady.timer);
zTreeAsyncReady.timer == null;
zTreeAsyncReady.done = true;
}
console.log('没执行完');
if (zTreeAsyncReady.done) {
f();
}
},100);
}
/**
* 搜索方法
*/
function search(){
var treeObj = $.fn.zTree.getZTreeObj('zTree');
var value = $.trim($('#search').val());
if(value == ""){
var hides = treeObj.getNodesByParam("isHidden", true); //显示所有隐藏节点
treeObj.showNodes(hides);
return;
}
//查找节点
var nodes = treeObj.getNodesByParamFuzzy('name', value);
if(nodes.length==0){
alert('未搜索到数据！');
return;
}
//隐藏所有节点
var all = treeObj.transformToArray(treeObj.getNodes());
for (var i = 0; i < all.length; i++) {
treeObj.hideNode(all[i]);
}
//展示查找到的节点
for (var i = 0; i < nodes.length; i++) {
treeObj.showNode(nodes[i]);//显示查到节点
var parentNodes = [];
getParentsNode(nodes[i], parentNodes);
treeObj.showNodes(parentNodes); ////显示其所有父节点
treeObj.expandAll(true);//展开所有查询到的内容
}
}
/**
* 获取所有节点的父节点
*/
function getParentsNode(node, array){
var parentNode = node.getParentNode();
if(parentNode!=null){
array.push(parentNode);
getParentsNode(parentNode, array);
}
return;
}
</script>
</html>
后台异步加载节点的代码：仅仅是模拟使用的；很简单的模拟：
package com.cy.controller; import java.util.ArrayList; import java.util.List; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.alibaba.fastjson.JSON; import com.test.model.Node; @Controller public class ZtreeController { @RequestMapping("/asyncGetNodes") @ResponseBody public List<Node> asyncGetNodes(String id, String pid, String name) throws Exception{ List<Node> nodeList = new ArrayList<Node>(); if(id==null){ nodeList.add(new Node("1","0","硬件规格","false","true")); nodeList.add(new Node("2","0","软件规格","false","true")); return nodeList; } if(id.equals("1")){ nodeList.add(new Node("10","1","单板","false","true")); nodeList.add(new Node("11","1","子卡","false","true")); nodeList.add(new Node("12","1","设备","false","true")); }else if(id.equals("2")){ nodeList.add(new Node("20","2","java","false","true")); nodeList.add(new Node("21","2","jscript","false","true")); nodeList.add(new Node("22","2","php","false","true")); }else if(id.equals("10")){ nodeList.add(new Node("100",id,"单板_00","false","true")); nodeList.add(new Node("101",id,"单板_00","false","false")); }else if(id.equals("100")){ nodeList.add(new Node("1000",id,"单板_00_00","false","false")); } Thread.sleep(1000); return nodeList; } }
如果有更好的ztree异步搜索的方法，欢迎大伙留言。不胜感激！！
效果：
