在上篇文章给大家介绍了jquery中EasyUI实现异步树，本文给大家介绍jquery easyui实现动态树。
首先是在jsp页面中引入相关的js文件
在body中加入流程列表，通过后天拼接json数据
具体内容请看下面代码详情吧。
首选在jsp页面中引入相关的js
<link rel="stylesheet" type="text/css" href="<%=path %>/css/jquery_easyui/themes/default/easyui.css"> <link rel="stylesheet" type="text/css" href="<%=path %>/css/jquery_easyui/themes/icon.css"> <script type="text/javascript" src="<%=path %>/js/jquery_easyui/jquery-1.4.4.min.js"></script> <script type="text/javascript" src="<%=path %>/js/jquery_easyui/jquery.easyui.min.js"></script>
添加script
<script> $(function(){ $('#tt2').tree({ checkbox: false, url: '<%=path%>/formconfig/loadWfNodes.do', onBeforeExpand: function(node){ $('#tt2').tree('options').url = '<%=path%>/formconfig/loadWfNodes.do?wfId='+node.id; } }); }); </script>
在body中加入
<body> <ul id="tt2"> <li state="closed" id='0'><span>流程列表</span></li> </ul> </body>
后台拼接json数据
package com.aegon_cnooc.oa.formconfig.action; import java.io.PrintWriter; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import com.aegon_cnooc.framework.base.action.BaseAction; import com.aegon_cnooc.oa.formconfig.service.FormConfigService; import com.aegon_cnooc.oa.ibatis.to.TuOafWfTO; import com.aegon_cnooc.oa.ibatis.to.TuOafWfnodesTO; import com.aegon_cnooc.util.StringUtil; /** * 加载流程下的节点的名称 * @Author: liuxinghui * @Date: 2011-9-8 * @Version: 2.0 * @Despcrition: */ public class LoadWfNodesAction extends BaseAction{ private FormConfigService formConfigService; public ActionForward executeAction(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { String wfId=request.getParameter("wfId"); String jsonstr = "["; if(StringUtil.isNotEmpty(wfId)&&"0".equals(wfId)){ List wfList=formConfigService.findWf(); for(int i=0;i<wfList.size();i++){ TuOafWfTO wfTo=(TuOafWfTO)wfList.get(i); jsonstr=jsonstr+ "{n" + " "id":"+wfTo.getWfid()+",n" + " "text":"<a href='javaScript:void(0)' target='mainFrame'>"+wfTo.getWfname()+"</a>",n" + " "state":"closed"n" + " },"; } int end=jsonstr.length()-1;//去掉最后一个逗号 String json=jsonstr.substring(0,end); json=json+"]"; response.setContentType("application/json;charset=gbk"); response.setCharacterEncoding("gbk"); PrintWriter pw = response.getWriter(); pw.write(json); pw.flush(); }else{ List wfNodes=formConfigService.findWfNodesById(wfId); for(int i=0;i<wfNodes.size();i++){ TuOafWfnodesTO wfNodesTo=(TuOafWfnodesTO)wfNodes.get(i); jsonstr=jsonstr+ "{n" + " "id":"+wfNodesTo.getNodeid()+",n" + " "text":"<a href='" + request.getContextPath()+ "/formconfig/loadGroupByWfIdAndNodeId.do"&nodeId="+wfNodesTo.getNodeid()+"' target='mainFrame'>"+wfNodesTo.getGenstepname()+"("+wfNodesTo.getNodeid()+")</a>",n" + " "state":"closed"n" + " },"; } int end=jsonstr.length()-1;//去掉最后一个逗号 String json=jsonstr.substring(0,end); json=json+"]"; response.setContentType("application/json;charset=gbk"); response.setCharacterEncoding("gbk"); PrintWriter pw = response.getWriter(); pw.write(json); pw.flush(); } return null; } public void setFormConfigService(FormConfigService formConfigService) { this.formConfigService = formConfigService; } }
下面一段代码是EasyUI Jquery 动态加载树，点击节点加载
<script type="text/javascript"> $(function() { $(document).ready(function() { $.post("./test/tree.action", {}, function(json) { $("#tt").tree({ data : json.itemsList, onClick : function(node) { $.post("./test/tree.action", { "id" : node.id }, function(json) { $('#tt').tree('append', { parent : node.target, data : json.data }); }, "json"); } }); }, "json"); }); }); </script> </head> <body> <ul id="tt"></ul> </body>