参考博客：https://www.cnblogs.com/henuyuxiang/p/6677397.html
前台代码
<%@ 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: {
onNodeCreated: zTreeOnNodeCreated
}
};
$(document).ready(function(){
initZTree(); }); /**
* 搜索
*/
function search(){
var param = $.trim($("#search").val());
var treeObj = $.fn.zTree.getZTreeObj("zTree");
if(param != ""){
param = encodeURI(encodeURI(param));
treeObj.setting.async.otherParam=["param", param];
}else {
//搜索参数为空时必须将参数数组设为空
treeObj.setting.async.otherParam=[];
} treeObj.reAsyncChildNodes(null, "refresh");
} function zTreeOnNodeCreated(event, treeId, treeNode){
var param = $.trim($("#search").val());
var treeObj = $.fn.zTree.getZTreeObj(treeId);
if(param!="" && treeNode.isParent){
treeObj.reAsyncChildNodes(treeNode, "refresh",false);
}
} 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);
},
error: function(){ }
});
} </script>
</html>
Node.java:
package com.test.model;
public class Node {
private String id;
private String pid;
private String name;
private String open;
private String isParent;
public Node(String id, String pid, String name, String open, String isParent) {
super();
this.id = id;
this.pid = pid;
this.name = name;
this.open = open;
this.isParent = isParent;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getPid() {
return pid;
}
public void setPid(String pid) {
this.pid = pid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getOpen() {
return open;
}
public void setOpen(String open) {
this.open = open;
}
public String getIsParent() {
return isParent;
}
public void setIsParent(String isParent) {
this.isParent = isParent;
}
}
后台代码：
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;
}
}
说明：
1.通过在otherParam数组中设值的方式将搜索参数带到后台（无参数时必须将otherParam设为空数组否则一直会将前一次的参数带到后台）；
2.在结点创建完成后的回调函数onNodeCreated中进行手动异步加载。每个节点都进行异步加载，这时候带上搜索的关键字进行查询，达到搜索目的；
3.我这边第一次因为要将第一个父节点展开，所以第一次请求第一级父级节点，然后手动$.fn.zTree.init($("#zTree"),setting, data)，这时候expandNode第一个父级节点，是自动异步加载的；
4.如果点击搜索，自动带上param参数，这个参数就是搜索的关键字，然后每个节点创建时候触发onNodeCreated事件，每个节点只要是父节点，都会进行异步加载；
5.我这边后台没有写根据param进行查询，仅仅是一个例子而已。真正根据param去查询就行了。
初始化的时候默认加载第一个父级节点：
搜索的时候加载全部节点，要包含节点名字:
