zTree开发下拉树

2022-12-01 22:51:54

　　最近，因为工作需要一个树形下拉框的组件，经过查资料一般有两种的实现方法。其一，就是使用zTree实现；其二，就是使用easyUI实现。因为公司的前端不是使用easyUI设计的，故这里我选择了zTree来实现下拉树。

这里使用简单的数据格式（即简单的Json格式）类似如下Json：

var zNodes =[

            {id:1, pId:0, name:"北京"},

            {id:2, pId:0, name:"天津"},

            {id:3, pId:0, name:"上海"},

            {id:6, pId:0, name:"重庆"},

            {id:4, pId:0, name:"河北省", open:true, nocheck:true},

            {id:41, pId:4, name:"石家庄"},

            {id:42, pId:4, name:"保定"},

            {id:43, pId:4, name:"邯郸"},

            {id:44, pId:4, name:"承德"},

            {id:5, pId:0, name:"广东省", open:true, nocheck:true},

            {id:51, pId:5, name:"广州"},

            {id:52, pId:5, name:"深圳"},

            {id:53, pId:5, name:"东莞"},

            {id:54, pId:5, name:"佛山"},

            {id:6, pId:0, name:"福建省", open:true, nocheck:true},

            {id:61, pId:6, name:"福州"},

            {id:62, pId:6, name:"厦门"},

            {id:63, pId:6, name:"泉州"},

            {id:64, pId:6, name:"三明"}

         ];

这里首先需要一个实体bean，用来封装对应查出来的数据，如下：

public class ZtreeNode {

    // id

    private String id;

    // 父id

    private String pId;

    // 显示名称

    private String name;

    // 是否打开 (这里默认是不打开的，如果需要打开，设为true)

    // private boolean open ;

    // 能否选择 （设置节点是否能够选择，默认都能选择，设为true对应的节点不能选择）

    // private boolean nocheck ;

    /**getter and setter*/

}

这里需要注意的是 pId 中的第二的字母是大写的，如果写成小写的就不能构造成树形结构，所有的都是根节点。

然后，将从数据库中查出来的数据，转换为对应的ztree需要的bean，再转换为相应的Json，代码如下：

// 获取商品分类树 返回json

    public String getGoodsCategoryTreeJson() {

        List<GoodsCategory> allGoodsCategoryList = goodsCategoryService.getGoodsCategoryTreeJson() ;

        List<ZtreeNode> ztreelist = new ArrayList<ZtreeNode>();

        for(GoodsCategory gcty : allGoodsCategoryList){

            ZtreeNode treenade = new ZtreeNode();

            treenade.setId(gcty.getId());

            treenade.setpId(gcty.getParent()==null?"":gcty.getParent().getId());

            treenade.setName(gcty.getName());

            ztreelist.add(treenade);

        }

        return ajax(ztreelist);

    }

将list转换为对应的Json方法，如下：

用到的Json工具包：

import org.springframework.base.util.JsonUtil;

private static final String HEADER_ENCODING = "UTF-8";

private static final boolean HEADER_NO_CACHE = true;

private static final String HEADER_TEXT_CONTENT_TYPE = "text/plain";

private static final String HEADER_JSON_CONTENT_TYPE = "text/plain";

// AJAX输出

    protected String ajax(String content, String contentType) {

        try {

            HttpServletResponse response = initResponse(contentType);

            response.getWriter().write(content);

            response.getWriter().flush();

        } catch (IOException e) {

            e.printStackTrace();

        }

        return NONE;

    }

    // 根据文本内容输出AJAX

    protected String ajax(String text) {

        return ajax(text, HEADER_TEXT_CONTENT_TYPE);

    }

    // 根据操作状态输出AJAX

    protected String ajax(Status status) {

        HttpServletResponse response = initResponse(HEADER_JSON_CONTENT_TYPE);

        Map<String, String> jsonMap = new HashMap<String, String>();

        jsonMap.put(STATUS_PARAMETER_NAME, status.toString());

        JsonUtil.toJson(response, jsonMap);

        return NONE;

    }

    // 根据操作状态、消息内容输出AJAX

    protected String ajax(Status status, String message) {

        HttpServletResponse response = initResponse(HEADER_JSON_CONTENT_TYPE);

        Map<String, String> jsonMap = new HashMap<String, String>();

        jsonMap.put(STATUS_PARAMETER_NAME, status.toString());

        jsonMap.put(MESSAGE_PARAMETER_NAME, message);

        JsonUtil.toJson(response, jsonMap);

        return NONE;

    }

    // 根据Object输出AJAX

    protected String ajax(Object object) {

        HttpServletResponse response = initResponse(HEADER_JSON_CONTENT_TYPE);

        JsonUtil.toJson(response, object);

        return NONE;

    }

    // 根据boolean状态输出AJAX

    protected String ajax(boolean booleanStatus) {

        HttpServletResponse response = initResponse(HEADER_JSON_CONTENT_TYPE);

        Map<String, Object> jsonMap = new HashMap<String, Object>();

        jsonMap.put(STATUS_PARAMETER_NAME, booleanStatus);

        JsonUtil.toJson(response, jsonMap);

        return NONE;

    }

　　private HttpServletResponse initResponse(String contentType) {

        HttpServletResponse response = ServletActionContext.getResponse();

        response.setContentType(contentType + ";charset=" + HEADER_ENCODING);

        if (HEADER_NO_CACHE) {

            response.setDateHeader("Expires", 1L);

            response.addHeader("Pragma", "no-cache");

            response.setHeader("Cache-Control", "no-cache, no-store, max-age=0");

        }

        return response;

    }

这样前台所需要的数据，就从库里取出，并封装成了对应的Json。

接下来就是前台的实现了，前台需要导入的js和css如下：

<link rel="stylesheet" href="${base}/template/ztree/css/demo.css" type="text/css">

<link rel="stylesheet" href="${base}/template/ztree/css/zTreeStyle/zTreeStyle.css" type="text/css">

<script type="text/javascript" src="${base}/template/ztree/js/jquery.ztree.core.js"></script>

这里只有demo.css是自己添加的，其他都是官方制定的，demo.css是将官方的demo用到的css修改的，如下（这里有冗余样式没有删除掉）；

 1 div.content_wrap {width: 400px;}

 2 div.content_wrap div.left{float: left;}

 3 div.content_wrap div.right{float: right;width: 340px;}

 4 div.zTreeDemoBackground {text-align:left;}

 5

 6 ul.ztree {margin-top: 10px;border: 1px solid #617775;background: #fefefe;width:220px;height:360px;overflow-y:scroll;overflow-x:auto;}

 7 ul.log {border: 1px solid #617775;background: #f0f6e4;width:300px;height:170px;overflow: hidden;}

 8 ul.log.small {height:45px;}

 9 ul.log li {color: #666666;list-style: none;padding-left: 10px;}

10 ul.log li.dark {background-color: #E3E3E3;}

11

12 /* ruler */

13 div.ruler {height:20px; width:220px; background-color:#f0f6e4;border: 1px solid #333; margin-bottom: 5px; cursor: pointer}

14 div.ruler div.cursor {height:20px; width:30px; background-color:#3C6E31; color:white; text-align: right; padding-right: 5px; cursor: pointer}

然后，就是对应的下拉框：

 1 <div class="content_wrap">

 2     <div class="zTreeDemoBackground left">

 3          <input id="citySel"  class="formText" type="text" onclick="showMenu(); return false;" readonly value="" style="width:150px;"/>

 4          <input id="treeids" type="hidden" name="goods.goodsCategory.id" >

 5          <input type="button" onclick="showMenu();" value="∨">

 6     </div>

 7 </div>

 8<div id="menuContent" class="menuContent" style="display:none; position: absolute;">

 9    <ul id="treeDemo" class="ztree" style="margin-top:0;"></ul>

10 </div>

这里有一个隐藏的文本框用来存放下拉框选择内容对应的id。

对应的脚本如下：

<SCRIPT type="text/javascript">

        var setting = {

            view: {

                dblClickExpand: false

            },

            data: {

                simpleData: {

                    enable: true

                }

            },

            callback: {

                onClick: onClick

            },

            view: {
　　　　　　　　　 // 不显示对应的图标

                showIcon: false

            }

        };

        function onClick(e, treeId, treeNode) {

            var zTree = $.fn.zTree.getZTreeObj("treeDemo"),

            nodes = zTree.getSelectedNodes(),

            v = "";

            ids = "";

            nodes.sort(function compare(a,b){return a.id-b.id;});

            for (var i=0, l=nodes.length; i<l; i++) {

                v += nodes[i].name + ",";

                ids += nodes[i].id + ",";

            }

            if (v.length > 0 ) v = v.substring(0, v.length-1);

            var cityObj = $("#citySel");

            cityObj.attr("value", v);

            // 将选中的id放到隐藏的文本域中

            if (ids.length > 0 ) ids = ids.substring(0, ids.length-1);

            var treeids = $("#treeids");

            treeids.attr("value", ids);

        }

        function showMenu() {

            var cityObj = $("#citySel");

            var cityOffset = $("#citySel").offset();

            $("#menuContent").css({left:cityOffset.left + "px", top:cityOffset.top + cityObj.outerHeight() + "px"}).slideDown("fast");

            $("body").bind("mousedown", onBodyDown);

        }

        function hideMenu() {

            $("#menuContent").fadeOut("fast");

            $("body").unbind("mousedown", onBodyDown);

        }

        function onBodyDown(event) {

            if (!(event.target.id == "menuBtn" || event.target.id == "menuContent" || $(event.target).parents("#menuContent").length>0)) {

                hideMenu();

            }

        }

        var zNodes ;

        $(document).ready(function(){

 　　　　　　// 加载数据

            $.ajax({

                async : false,

                cache:false,

                type: 'POST',

                dataType : 'json',

                url: '${base}/admin/goods!getGoodsCategoryTreeJson.action',

                error: function () {

                    alert('请求失败');

                },

                success:function(data){

                   zNodes = data;

                }

            });   

            $.fn.zTree.init($("#treeDemo"), setting, zNodes);

        });

</SCRIPT>

这样，一个下拉框就做完了。如下图所示：

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loouGWDI8WFTdmePzG5vSlB9QTly3jY9Akw7mLxpHsCfPMzEPflEEvytAYEQxzy0xzDOdZHTezDYartrNfJ22BcSczvNCYtihIhfUKFcPZKzlGl4rKCk7LJaDiPSjF1JPT0BzDJ71VLcPz13iRZ2YzhzXD2dPDIDDPFUs7aoyS4ZYaESAPMNxtw4vVeIn0ttR4CSihVGogE0IoVQwPfEoJDZLqweguB5SQuOMjcWJaPF3F0EqH8TmA4W4bnh2xxkukt73GixjI8RRQwfChT/3A2OmmPtYOrL0kPRdQQgjxh+w0IxWOwXTSfMBwtw0vtcaL0uetGx74/lAyTtVU6YEj/lAJe+NbpYXM2fPCsuboZssFDHfb8OyINV7EWeJpGS5N8zT3tIlBHwtuuYBOyfDA94dRCyA+tbAOPTTR8wHD3Ta8WI0XsQhExla6rKXRcKU/Pd3w5PgfiS0AsYsd+Z0XGO624dkpUOPFPK5FeSWuvab4Z2lP83aBZLResU28CccO70Py3MBwtw0v9364fNEc1lGV+7P5RXNknnDZneiiKH+8v15j1afsBp34GqI8HzDcbcMBsIO1R7H2KKgzWHsUGQ7qDFrpbhuODAd2YLjbhgNgB4a7bfgkMxzJ7yIw3G3DAbADw902vJoZLowpNw1uNdZ1MdWWSDi4sChi4rQzTFDhwHC3Da8iAWWTPsU/ouVHpZ2E/2oj3hMXP1XF1ZYmD/WH4aMRDHfd8LLTOP9IONHU+I84tpU5YomGS0e0TAlPHs8Ow0cjGO664WWTtzLM0KeGUkxh4Ygw3U3JrNaWGI1GvD0vmqqNWZU/J4DhKlM2PC57mkB7cStlqUDPE6sdKzXVlPrHG4tEK4csl08eLHXYEdaMRUtyLI1QjwzPWxlmNDItAx5QQvzYvpGQvMkZnnAmkLUVRrjzg8NwmUpl+FaPpCmUVtJ4tRsvP6QJH8o8WGp7nucpKx9wz5OLomf4enXM8LyVYeIJ3dF50R+OAj/qTBuFs72FvSPMZoYzW4ZDqbE+9Anxg6FUfRmGy1TAcHNael5cFzVchMgMM1Moe560DxebaR/VRWfai0mulUyvsOETyPB8lWG0djVn6FNW0W0kWy1ZH50P5MN50u7xDgHlE0rF98FwmWoYbloqSGhRh8oNltrq8iP9jrF0uVgX3dRE31gknTXtxCGIbbh86C5xw5tULz1vZZiAUl+YMC7omVhvOcnFhOKOsc5x93zcJIDhKhUzXDDTbLjwPzmv4auLJMzwJSGlxQznDYGEAukNzfCClWHE/wS+H0hdZDZ7jd3mao+50FzXL/uFbwFcMzwhw1N77NhH8GPy6wLaWzRch0fLnkg9fHzthMoZXjaFK8MISyjw4iw0SFzsJMHFoU9C4flblWoQ4h6Zj9owqmW41pAu1krf6hHDIqGxsdJSJ+p1uGg4/wLx6iiVM7x698Ojoi/GAlB6FXZzjAeRulHcy1VhwoIzmsZ6FZpmUynDt3rESzFc+DVIMnxjkXjd/uEa1bvE2TE3Fkl7calDaEf6VeP2umU4AHYqYLhsJkta+Uo4T4avUfFumSI562DrLS514o9QlxN2q5WOWWLATjUMZ+EstKuZXXnuloW7yY3z1a64A7tcJ70B61FjupoM79I2WeqpJ4itBvalA9eZsuE8JxPvP4dBnTjKhWe4YrK2Dzd/tcv1DvNfufxb2pDHzEgnIM/yEchwUFGqkeF13JDhWTj57FcN2ab1LwzD3Ta8+hlu/6yTz351stev/wbD67chw7MAw8sGhrttODL8ZK9/snLB68yPycYPb52Le2aurPS3F2bin89d3ma73bt8Xv3E+SvnLm+vXDi/8CEMb8SGDM+CaLjkkndh3ari9sKM583cuhfaJe+f4VDzV9SbMmy3D2+d4/tvL8www0Np56+kGr734a1z0beC4bXekOFZPkswPFaLKxrppG/3Lp8/N3M+Nry/3vGurPSLHEptBaRn+Hp8D2bmvLBzjN6ggOH125DhWUhspd+7fD4xxueveBfW710WDbc11G2His4IpuDdiwJ8/oon72D4OOm0AsPrvyHDs3xWouErF5KCl8e1YrjWUM9yKF1XuXlvQozxc5fXF2aurPTXOzO37nHDhVY9DK/1hgzPgtnwe5fPe2KrWw9V3fD+esczqJV8KOHUYAzw+Sued37hw/WO1upm1wid+ZPwWn29M3PrnuR5cw2f+mKgWHu08LuKIdaB0f80GG5x8t7l82Jfl95yVrI6Xe/+9sKMKLBwjS2IunJBzPBbnZlbK5fPd+bZ8aP9by3MnD83Y75YcM1wrD2KDB8PquErFzxzosbGKggCy2lsP1RigKs9bYre23v99YXL22FfOrtkYBl+snIh8RaAa4ajlV4Vw6uf4XYkwxMMWe94hgtpPcPFhnq2QykBHhou3S07iW9x63fLeBfdemfm1r35K7wX3dQjAMPrtyHDsyAYrt+g5gJnNzxsxmc7lLmPPT3DY8PDqwbWtr+y8uGtczO3VoRLCWcNv1EUGD5mapXhY9gS73vlOULWDOeN871+9IBdR9SgL/3Ow/vFNhgOJMY+Lt18s2rqm2uGf7yzUWyD4WMGGe7G5prhnx1sFdtgOJCA4WUDw902vA4Z3oxtWv/CMNxtwwGwA8PdNtz1DAdlA8PdNhwAOzDcbcNLz3B19V/9CXFJE+Me0kLgbMGj+OfonYZliAJK/KFycOljomNGH2leOCnxE/QX9BXVHF87BYa7bfgECNfu5o/1X/jIQf4geUlweUmzkXRuSDI8UdrADz+VBqOAepTKcprWO0pa/NS8nJrjbjNguNuGl70CmTbRQ/MnNiHUNX+GC8FJiPEzDWqyN9EgXmRYd9j2N/Di044pr2E4DK+C4dl5a3755OTk9eujw59ePn/2Q7QqePo6weHj+BdecDheHdC0YrBx1d9QavlFQ+vfvn5o4PvDgDLDA+p5ypKHNFCPYP7B8Ln6X9hhYLjbhudaCVzX+5vBv+yGpwUgWzw4GMlNb9EZa4zGpwF+fiB+4BMasPZAvAS56dJAOkK8VqnUK5B4jopeCajQahA/BobD8CoYnp235pd1vQf3vzxNhg99Qijl19ZiZ5U5egPqecQfihf2wtEJEWKXaSp6rh1L+GrUD3xCfJ+qJw7hveEpQeoSMP3lLM+5CAx32/BcGf782Q8tmfv3PmWGi3VXIlIzPPBNAqprh6u5rzzrEd+nYXbL1+y+TwghcTe5KfUjlQlrtIffXGylD33iiUcRTklBUvccDIfhVTA8O2/NLyvpff/ep19/cceS4SKJv/Bh5ia3wNWeNkXvoXymYOeHuFs+oT0QpfjQp4LhiqtDn1BK1f6AgHrUR4bDcBcMz5Xhut5ffvKfCYanXz5zbdIyXL9bJlwp63fLuFj8Vnh8StA9z5Hh5r+fZnhqy91FYLjbhmfnrfllXe/Pg7+MJ8NF0u6W6RkeH0foavc8jwZDnxB2ka19tpDhAfsESosbLn0X89/LTWC424aXej9c5HSGZ81wdfDMiNtn+uiA0oC9SClVLwY8radN+HbKuUX+xvFhahHhMNxxwwGwA8PdNhxzy4AdGO624QDYgeFuG44MB3ZguNuGA2AHhrtt+CQzHMnvIjDcbcMBsAPD3Ta8ehkull4x3aLWdkvaA4wFGO624dWDj1UxFmOQp56YBqLC8HEDw902vOwMzz8Szmy4qeCDHt0wfPzAcLcNL5v8lWHEVrr0VGJJF70OFBgfMNxtw8vOcLEyTKvVylAZRsnweP5nQOMqLJYZa17yfFFQABjutuFlI1aGabVaGSrDxIYbbI0nf5vmi4UTyWD4GIHhbhs+gQzPWRlGaqWraS1VUENf+iSA4W4bXjZiZZhWq5VeGSa8qJZ62gzX13Uuq1IpYLjbhk8gw6Nrb5be1sowUpHGNMOR4ZMAhrtteNnkrQwTiV0ww3EJPm5guNuGV+x+OCuLyO+OySsUKB3lWvVyRHg5wHC3DQfADgx32/DqjUsH1QKGu204AHZguNuGI8OBHRjutuEA2IHhbhuODAd2YLjbhgNgB4a7bXj1Mjweiq5PJEtYfBRj2koEhrttePUIh62G49iEhYpQ42UKwHC3Da/YmLaRarhQuylxWXEPNV5KBIa7bXjZnKbGC/F9cflveYFP1HiZEDDcbcOrWONFbqWbd7GC6SdjBIa7bXjZFKnxEhvuqyrHl+ao8TIhYLjbhle5xgth08yEgoyG2WToSy8ZGO624WWTu8aL2kqPLrKVznPUeJkQMNxtwytX40UwOrTVVEwZGT4pYLjbhpdN3hov4u1vdcSLdHmNGi8TAoa7bXjV7ocHlPhDns/U94mYysx11HiZLDDcbcMBsAPD3TYcs8SAHRjutuEA2IHhbhuODAd2YLjbhgNgxwHDNxaNd05j2otbq137Lp7X7R8eHR+u0fbiFj/yGuVPDpba7AF70qOr0hfod8jSxmCpTZY2qmc4MhzYccBwedvqEdIbWPex2MgN73eMZwH2rsFSW5K832HPR2eEKhkOgB1HDF9LnI3UWQs9tCU4XT06jnNeMVbM8LRPDD+uKoaXnuFapQZD6QZlGpm6hzR8jQbyz9E7DcNdAkr8YfIctaFP4rfHu0lPayNrjJUn6ow7hpvyc2ORxIZHCRzuudplQvY7USaLrfRs22o3PCOIbQS1JV/nDA+ESd4BNQxKUYexGQyPh7kww+MBramG20ers7MFn6oW8JE29rFzDXPcQcMFS82Gq5ErG96l7e5Sz3BpT3qDLfa8eK3eXlzqeJrkDmZ4/motSWPHwyyOdtLHqebMcGHCOCHGz0xwMqDSIeNxstphrYuo1Zk6Gp6Y4f3Q1fhifrWrPoiPz6/n+x2ytLpI8kpetQzPX61FilUpC+UCLfyxqa6DHr7hcbTWgCFa7ePU47ZF1BIY6iGutzoaVkjGPcMFq3MZvtUjdJXbu5WQ4YLhcVNc6GnL0DivbIbnr9aSJcPDEJWb3qJjtoMIpwF+fggrQITj25VDq9iqxfA5rNppBoZX2/CtHvFSDBf+Lydch6dmeF/osQ+PfJSvO72CGZ6zWkt6hg99Qijl19ZCpYeE1i/XTbywF45OSHjM0HDJc8OxjI0E9auI5yP+HAyvnuHhtrFIvG6f9YrLfWa5etqytdKVI+fcKpjhOau1pGd44JsETCyqmlBqlfg+DbNbvmb3fUJIeBUgvCTPPE/4csx13yfEHwaUTXQz71dr3DGchbMQoczz7HfLZMP1fZjh/Di2u2Ju9qXnr9YikdhUDjPX/A8fVlSWpJL1HspnCnZ+iLvlbRoa4zg+5fDDopVeccP5fWxzkEaNdkvS8gwXzgiGYTMsw3mSy019iYq10kur1pJ++cyTNC3D9btlUvkX9W4ZN5LfCo9PCUbPUzKcHxaGV9xwR7cKZni+ai0yKRkukna3TM/w+DhCV7vneTQIy6+aPzslw83fG4bDcIcML/V+uMjpDM+a4VoNKH5+SHBSH0ynRnj4vZOaJPW/EofhbhteHmlt9Jow7X/m0oHhbhuOuWXADgx323AA7MBwtw1HhgM7MNxtwwGwA8PdNhwZDuzAcLcNB8AODHfb8CbXeBmZ54Ya7nEnTqFpADDcbcMnQKVrvMjzQ+Wvl2Hgbf0HvMBwxw1vcI0Xu8AJ5xhkOAx3y/Ds1K7Gi0zDRptnB4a7bXjDa7zEJE1CyZjy9QWGu214dmpW4yX9xGGYf2L+q9UbGO624c2u8SJ/U4uyMByGO2p4dupY4yX+Cuw9ibtq3745l+0w3G3Dm13jJfw4cw+A/BUkoxvUoQ7D3TY8O/Ws8eKpGW94Svj28Sc3pI0Ow103vLE1XswmJ73YoMxWgeFuGw6AHRjutuGYWwbswHC3DQfADgx323BkOLADw902HAA7MNxtw5HhwA4Md9twAOzAcLcNb3iNl5FcAUL4RGkMfDT6roE3xWG424ZPgErXeAmoJ4554x8tHYt/hnEYbgOMh+FuG97gGlx+gR8AAANuSURBVC/CJ4qjUhXD2StxnYrGAcPdNjw7tavxoheaoIFmOHt6GATRENimiQ7D3Ta8sTVeAkoolY5MCKFUMTzwWYGKhMmtTbAdhrtteHZqVuNF/3rCNNPo1ED5CSP+BuJfogFX4TDcdcObXOPFcFaRDde+nnKaguEwvPKGZ6d+NV6GPqFBdHDhzUpPm7kd0pR7ZzDcbcObXONF/mTRWKPhSn86DIfhLhienfrVeDGPa1FeiU8cSmvAWhmqRsBwtw1vbI0X/kFJFwTqYSO9hdNNIwSH4Y4bDoAdGO624ZhbBuzAcLcNB8AODHfbcGQ4sAPD3TYcADsw3G3DkeHADgx323AA7MBwtw2faIaHA0oTbiUn3TIvt8YLsAPD3TZ8okQSxrMzE4ajS/6WWeMFpAHD3TZ8ajVevMSFwTRVy6vxAtKB4W4bnp1T1ngx/czIV11hfDVeQCZguNuGl13jRa2zKlU8ZGEc1U6SYeITPyinxgvICAx32/DsFKvxInsYly1VyydnyvAx13gBWYDhbhteao2XOJu501HNhdQS6tKLBukL1HgBhYDhbhuenfw1XuTeM2nadrxHSgs8mpstPjGmGi8gCzDcbcNLq/EykqI5fCgYJ92nFnNdu2wuq8YLyAIMd9vw7OSu8RKPb+HZG1DPI5QS86ID/C2GJnlZNV5AFmC424aXdz9cX4xMKZNitdp8g3zMNV5ABmC424YDYAeGu204ZokBOzDcbcMBsAPD3TYcGQ7sFDP8m6LAcAAmSjHDT4oCw8cMMhzYmbThm0+eN2pDhoPpUszwwr/wrcLnBkepYIYnT9VKqueA8WQOM+kMH6M8TlCFDM+wyGBYscWgPqZ2uQ0ML5cyDC+6AplSdEHPchheQ2B4uZRheIFqLSEBVeeSyK+ilV47YHi5lGR43motKRUToXB9geHlUpLheau1pE+/lC/W1RlgmPrhLDC8XEoyPH+1ljRFhcttfjqQpofDcFeB4eVSkuE5q7XA8OYCw8ulJMNzVmvJ0B8Ow2sKDC+XkgwvUq3FDq7DawoML5cq3A/PlMDI8JoCw8ulCmPaQJOB4eUCw8F0geHlAsPBdIHh5QLDwXSB4eUCw8F0geHlAsPBdIHh5QLDwXSB4eUCw8F0geHlAsPBdIHh5QLDwXSB4eUCw8F0mbDh/w9n68Li7WC0WwAAAABJRU5ErkJggg==" alt="" />

如果，需要在修改页面中回写相应的下拉列表数据，添加如下的脚本：

<script type="text/javascript">

$(document).ready(function(){

    if ("${goods.goodsCategory.id}"!="") {

        var treeObj = $.fn.zTree.getZTreeObj("treeDemo");

        var node = treeObj.getNodeByParam("id", "${goods.goodsCategory.id}" , null);

        treeObj.selectNode(node,false , false);

        onClick(event,"${goods.goodsCategory.id}",node,true);

    }

});

</script>

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