1,在后台拼字符串产生json,json的格式为:[{title :"xxxx",  key: xerx, ,expand:true/false ,children:[{title:"yyyyy",key:eeee,expand:true},


{title:"zzzzz",key:dfds,expand:true}]}]。 这么嵌套下去,实际使用时可以用StringBuffer这样拼字符的速度快些。expand:true时产生的树是展开的,当为false时树是闭合 的。把这个json字符串放入map中在前台展示。(我用的springmvc框架)

2,引入css和js文件:dynatree/src/skin/ui.dynatree.css,dynatree/jquery/jquery-ui.custom.js,dynatree/jquery/jquery.cookie.js,

dynatree/src/jquery.dynatree.js。

3,在jsp中添加这样的div      <div name=test  style="width:170px;height:200px;overflow: auto ;background-color: white; border: #83BCF5 1px solid;" value="1">

4,在js中:


$(function(){   //这是为了在打开页面时就调用这个方法
        initTree();
         });

function initTree(){
         //初始化树状结构
        $("#test").dynatree({
            checkbox: true,
            // Override class name for checkbox icon, so rasio buttons are displayed:
            classNames: {nodeIcon: ""},
            // Select mode 3: multi-hier
            selectMode: 3,
            children: ${sjon}   //这个${sjon}就是后台保存在map中的json字符串
        });
 
  
 }

4,为该树添加全选与全部选操作:   


function selectAll(){    //全选
      $("#test").dynatree("getRoot").visit(function(node){
        node.select(true);
      });
 
  
 }
 
  function deSelectAll(){   //全不选
      $("#test").dynatree("getRoot").visit(function(node){
        node.select(false);
      });
 
  
 }

5,把此树的key发送到后台的方法:

比如这个树在  id为form1的form中,var formData = $("#form1").serializeArray();//这为了把树以外的内容序列化和树的数据一起发送


var tree1;



         tree1 = $("#test").dynatree("getTree");

        formData = formData.concat(tree1.serializeArray());    //这就把树的数据得到并和树之外的数据连在一起了。

然后把formData发送就over了。

 6,判断树是否有节点选择


$("#test).dynatree("getSelectedNodes").length==0表示没选择。


  二、以下是自己做的一个小列子实例,树形分类。树形分类的代码就不提供了。

jquery树形菜单插件 js树形图插件_ViewUI

 

<-- view 层-->
<script src="__JS__/dynatree/jquery/jquery-ui.custom.js" type="text/javascript"></script>
  <link href="__JS__/dynatree/src/skin/ui.dynatree.css" rel="stylesheet" type="text/css" id="skinSheet">
  <script src="__JS__/dynatree/src/jquery.dynatree.js" type="text/javascript"></script><!--添加  expanded 类是为了初始化页面,默认打开就展开某些项-->
<div id="tree">
                         <ul id="treeData" >
                            <?php foreach ($cateTree as $key => $cate) :?> 
                                <li id="{$cate['id']}" title="" class="li_{$cate['id']} top expanded" data-cateid="{$cate['id']}" >{$cate['cateName']}

                                   <a class="edit_nat c-violet" style="margin-left:100px;" href="javascript:editCate('<?php echo $cate['id'];?>');">
                                      <i class="iconfont"></i>
                                    </a> |
                                    <a class="text-muted" href="javascript:deleteCate('<?php echo $cate['id'];?>');" οnclick="return nat_del()">
                                      <i class="iconfont"></i>
                                    </a>

                                    <ul>
                                       <?php foreach ($cate['child'] as $key => $child) :?> 
                                           <li id="{$child['id']}" class="li_{$child['id']}" data="code:{$child['id']}" >{$child['cateName']} 
                                            <a class="edit_nat c-violet" style="margin-left:100px;" href="javascript:editCate('<?php echo $child['id'];?>');">
                                              <i class="iconfont"></i>
                                            </a> |
                                            <a class="text-muted" href="javascript:deleteCate('<?php echo $child['id'];?>');" οnclick="return nat_del()">
                                              <i class="iconfont"></i>
                                            </a>

                                            <ul>
                                              <?php foreach ($child['child'] as $key => $last) :?> 
                                                  <li id="{$last['id']}" class="li_{$last['id']}" data="code:{$last['id']}" >{$last['cateName']} 
                                                       <a class="edit_nat c-violet" style="margin-left:100px;" href="javascript:editCate('<?php echo $last['id'];?>');">
                                                        <i class="iconfont"></i>
                                                      </a>|
                                                      <a class="text-muted" href="javascript:deleteCate('<?php echo $last['id'];?>');" οnclick="return nat_del()">
                                                        <i class="iconfont"></i>
                                                      </a>
                                                      <ul>
                                                        <volist name="last['child']" id="four" >
                                                          <li id="{$four['id']}" class="li_{$four['id']}" data="code:{$four['id']}">{$four['cateName']}
                                                            <a class="edit_nat c-violet" style="margin-left:100px;" href="javascript:editCate('<?php echo $four['id'];?>');">
                                                                <i class="iconfont"></i>
                                                              </a>
                                                              |
                                                              <a class="text-muted" href="javascript:deleteCate('<?php echo $four['id'];?>');" οnclick="return nat_del()">
                                                                <i class="iconfont"></i>
                                                              </a>
                                                              <ul>
                                                                    <?php foreach ($four['child'] as $key => $five) :?>
                                                                           <li id="{$five['id']}" class="li_{$five['id']}" data="code:{$five['id']}">{$five['cateName']}
                                                                            <a class="edit_nat c-violet" style="margin-left:100px;" href="javascript:editCate('<?php echo $five['id'];?>');">
                                                                                <i class="iconfont"></i>
                                                                              </a>
                                                                              |
                                                                              <a class="text-muted" href="javascript:deleteCate('<?php echo $five['id'];?>');" οnclick="return nat_del()">
                                                                                <i class="iconfont"></i>
                                                                              </a>
                                                                    <?php endforeach;?> 
                                                              </ul>
                                                        </volist>
                                                      </ul>
                                              <?php endforeach;?>
                                            </ul>
                                      <?php endforeach;?>
                                    </ul>
                             <?php endforeach;?>
                          </ul>
                        </div><scsript type="text/javascript>
    //初始化树形,(备注:如果初始化默认页面中要展开某些项时,在标签中要添加"expanded"类。)
  $(function(){
    $("#tree").dynatree({
             
            }
        });  })
 
</script>