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jQuery树插件zTree使用方法详解

程序员文章站 2024-01-12 08:28:10
最近要做一个树结构,就使用了jquery 的树插件,感觉还不错,做个随笔 页面的基本结构是这样的 这里的样式是使用了metrostyle文件夹里的类bootstra...

最近要做一个树结构,就使用了jquery 的树插件,感觉还不错,做个随笔

页面的基本结构是这样的

jQuery树插件zTree使用方法详解

这里的样式是使用了metrostyle文件夹里的类bootstrap风格,当然首先需要下载ztree插件,直接百度即可,下载完成后由对应的api和一些例子,这里使用的是复选框模板

jquery  ztree树的下载链接

页面jsp如下:

<html> 
<head> 
 <meta http-equiv="content-type" content="text/html; charset=utf-8"> 
 <title> ztree demo - checkbox</title> 
 <link rel="stylesheet" href="/css/demo.css" rel="external nofollow" > 
 <link rel="stylesheet" href="/css/metrostyle.css" rel="external nofollow" > 
 <script type="text/javascript" src="/js/jquery-3.2.1.js"></script> 
 <script type="text/javascript" src="/js/jquery.ztree.core.js"></script> 
 <script type="text/javascript" src="/js/jquery.ztree.excheck.js"></script> 
  
 <script type="text/javascript" src="/js/jquery.ztree.exedit.js"></script> 
 
 <script type="text/javascript"> 
  var setting = { 
   check: { 
    enable: true 
   }, 
   data: { 
    simpledata: { 
     enable: true 
    } 
   }, 
   callback:{ 
    oncheck:oncheck 
   } 
  }; 
 
//  var znodes =[ 
//   { id:1, pid:0, name:"随意勾选 1", open:true}, 
//   { id:11, pid:1, name:"随意勾选 1-1", open:false}, 
//   { id:111, pid:11, name:"随意勾选 1-1-1"}, 
//   { id:112, pid:11, name:"随意勾选 1-1-2"}, 
//   { id:12, pid:1, name:"随意勾选 1-2", open:false}, 
//   { id:121, pid:12, name:"随意勾选 1-2-1"}, 
//   { id:122, pid:12, name:"随意勾选 1-2-2"}, 
//   { id:2, pid:0, name:"随意勾选 2", checked:false, open:false}, 
//   { id:21, pid:2, name:"随意勾选 2-1"}, 
//   { id:22, pid:2, name:"随意勾选 2-2", open:false}, 
//   { id:221, pid:22, name:"随意勾选 2-2-1", checked:false}, 
//   { id:222, pid:22, name:"随意勾选 2-2-2"}, 
//   { id:23, pid:2, name:"随意勾选 2-3"}, 
    
    
//   { id:3, pid:0, name:"随意勾选 3", checked:false, open:false}, 
//   { id:231, pid:3, name:"随意勾选 3-1"}, 
//   { id:232, pid:3, name:"随意勾选 3-2", open:false}, 
//   { id:2321, pid:232, name:"随意勾选 3-2-1", checked:false}, 
//   { id:2322, pid:232, name:"随意勾选 3-2-2"}, 
//   { id:233, pid:3, name:"随意勾选 3-3"} 
    
//  ]; 
   
  var code; 
   
  function setcheck() { 
   var ztree = $.fn.ztree.getztreeobj("treedemo"), 
   py = $("#py").attr("checked")? "p":"", 
   sy = $("#sy").attr("checked")? "s":"", 
   pn = $("#pn").attr("checked")? "p":"", 
   sn = $("#sn").attr("checked")? "s":"", 
   type = { "y":py + sy, "n":pn + sn}; 
   ztree.setting.check.chkboxtype = type; 
//   showcode('setting.check.chkboxtype = { "y" : "' + type.y + '", "n" : "' + type.n + '" };'); 
//   showcode('setting.check.chkboxtype = { "y" : "", "n" : "" };'); 
   showcode('setting.check.chkboxtype = { "y" : "s", "n" : "ps" };'); 
    
//   setting.check.chkboxtype = { "y" : "", "n" : "" }; 
  } 
  function showcode(str) { 
   if (!code) code = $("#code"); 
   code.empty(); 
   code.append("<li>"+str+"</li>"); 
  } 
   
  var znodes =[]; 
  $(document).ready(function(){ 
   var t = $("#treedemo"); 
   $.ajax({ 
    type: "post", 
    url: "/units/listtree", 
    datatype: 'json', 
    success: function(result) { 
     console.log(result); 
     $.extend( true, znodes, result ); 
     console.log(znodes); 
      t = $.fn.ztree.init(t, setting, znodes); 
//     demoiframe = $("#testiframe"); 
    } 
   }); 
  }); 
   
  $(document).ready(function(){ 
   $.fn.ztree.init($("#treedemo"), setting, znodes); 
   setcheck(); 
   $("#py").bind("change", setcheck); 
   $("#sy").bind("change", setcheck); 
   $("#pn").bind("change", setcheck); 
   $("#sn").bind("change", setcheck); 
    
  }); 
   
  function oncheck(e,treeid,treenode){ 
   var treeobj=$.fn.ztree.getztreeobj("treedemo"), 
   nodes=treeobj.getcheckednodes(true), 
   v=""; 
   for(var i=0;i<nodes.length;i++){ 
   v+=nodes[i].name + ","; 
   alert(nodes[i].id); //获取选中节点的值 
   } 
  } 
   
     
 </script> 
</head> 
 
<body> 
 <div class="tree" style="margin-left: 534px;background: #316ac5;width: 0px;"> 
  <ul id="treedemo" class="ztree" style="background: white;height: inherit;margin-top: 295px;"></ul> 
 </div> 
   <input type="checkbox" id="py" class="checkbox first" checked style="display:none;" /> 
   <input type="checkbox" id="sy" class="checkbox first" checked style="display:none;"/> 
   <input type="checkbox" id="pn" class="checkbox first" checked style="display:none;"/> 
   <input type="checkbox" id="sn" class="checkbox first" checked style="display:none;"/> 
       
</body> 
</html> 

上面的死数据替换为后台赋予的值,用的是ajax方式,当然后台需要用json方式进行交互
java代码控制器代码如下:

@controller 
@requestmapping("/units") 
public class unitscontroller{ 
 
 
 @autowired 
 private unitsservice unitsservice; 
  
  
  
 @requestmapping("/listtree") 
 @responsebody 
 public list<jsonobject> listtree(){ 
   
  list<jsonobject> jsonlist = new arraylist<jsonobject>(); 
  list<units> ztreeall = unitsservice.ztreeall(); 
   
  for (units units : ztreeall) { 
   jsonobject json = new jsonobject(); 
//   { id:1, pid:0, name:"随意勾选 1", open:false} 
   if(units.getunitsid() == units.getnodedata()){ 
     
     
    jsonobject json1 = new jsonobject(); 
     
    json1.put("id", units.getunitsid()); 
    json1.put("pid", 0); 
    json1.put("name", units.getunitsname()); 
    json1.put("open", false); 
     
    jsonlist.add(json1); 
     
    json.put("id", -1); 
    json.put("pid", units.getnodedata()); 
    json.put("name", units.getsectorname()); 
    json.put("open", false); 
     
   }else{ 
     
    json.put("id", units.getunitsid()); 
    json.put("pid", units.getnodedata()); 
    json.put("name", units.getsectorname()); 
    json.put("open", false); 
     
   } 
    
   jsonlist.add(json); 
    
  } 
// for (jsonobject units : jsonlist) { 
   
//  system.out.println(jsonlist.tostring()); 
   
// } 
   
   
  return jsonlist; 
 } 
} 

这样就可以实现所需要的树结构,ztree树是可以无限扩展的,就按照个人所需,来选择模板就可以了

jsp中的这段代码是获得当前选择值得id

function oncheck(e,treeid,treenode){ 
   var treeobj=$.fn.ztree.getztreeobj("treedemo"), 
   nodes=treeobj.getcheckednodes(true), 
   v=""; 
   for(var i=0;i<nodes.length;i++){ 
   v+=nodes[i].name + ","; 
   alert(nodes[i].id); //获取选中节点的值 
   } 
  } 

以上就是使用ztree的基本方法,希望对大家的学习有所帮助,也希望大家多多支持。