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ztree学习之异步加载节点（一）
ztreedemo.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP ‘ztreedemo.jsp‘ starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <link rel="stylesheet" href="<%=basePath%>/ztree/css/demo.css" type="text/css"> <link rel="stylesheet" href="<%=basePath%>/ztree/css/zTreeStyle/zTreeStyle.css" type="text/css"> <script type="text/javascript" src="<%=basePath%>/ztree/js/jquery-1.4.4.min.js"></script> <script type="text/javascript" src="<%=basePath%>/ztree/js/jquery.ztree.core-3.5.js"></script> <script type="text/javascript" src="<%=basePath%>/js/test/ztreedemo.js"></script> </head> <body> <ul id="treeDemo" class="ztree"></ul> </body> </html>
ztreedemo.js:
$(document).ready(function(){ initMyZtree(); }); var zNodes=""; var setting = { view: { selectedMulti: false, fontCss: setFontCss }, async: { enable: true, url:"getZtreeData", autoParam:["id"] }, callback: { beforeClick: beforeClickZtree } }; function initMyZtree(){ $.ajax({ type: "POST", dataType: "json", url: ‘getZtreeData‘, success: function(data) { zNodes=data; $.fn.zTree.init($("#treeDemo"), setting, zNodes); } }); } //单击事件 function beforeClickZtree(treeId, treeNode){ alert(treeNode.id+","+treeNode.name); } //设置字体 function setFontCss(treeId, treeNode) { if(treeNode.level==0){ return {‘font-weight‘:‘bold‘,‘color‘:‘red‘}; }else if(treeNode.level==1){ return {‘font-weight‘:‘bold‘,‘color‘:‘green‘}; }else if(treeNode.level==2){ return {‘font-weight‘:‘bold‘,‘color‘:‘blue‘}; }else{ return {}; } };
CZTestAction.java:
package com.cz.action; import java.io.IOException; import java.io.PrintWriter; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.apache.struts2.ServletActionContext; import com.cz.model.TreeNode; import com.cz.util.SqlHelper; import com.opensymphony.xwork2.ActionSupport; public class CZTestAction extends ActionSupport{ private String id; public String getId() { return id; } public void setId(String id) { this.id = id; } /** * @author chenzheng * @since 2013-8-21 * @Description: ztree测试 * @throws * @return * String */ public String getZtreeData(){ System.out.println("*********"+id+"**********"); if("null".equals(id)||"".equals(id)||id==null){ id="0"; } String sql="select t.jgid,t.jgmc,t.fjgid,t.jgbm,(select count(*) from sys_dept sd where sd.fjgid=t.jgid) as ispar from SYS_DEPT t where t.fjgid="+id; ResultSet rs=SqlHelper.executeQuery(sql, null); JSONArray jarray=new JSONArray(); List<TreeNode> list=new ArrayList<TreeNode>(); try { while(rs.next()){ TreeNode tnode=new TreeNode(); tnode.setId(rs.getString(1)); tnode.setName(rs.getString(2)); tnode.setpId(rs.getString(3)); //判断当前节点是否还有子节点 if(Integer.parseInt(rs.getString(5))>0){ tnode.setIsParent(true); tnode.setHasChild(true); }else{ tnode.setIsParent(false); tnode.setHasChild(false); } list.add(tnode); } } catch (SQLException e) { e.printStackTrace(); } jarray.addAll(list); System.out.println(jarray.toString()); HttpServletResponse response = ServletActionContext.getResponse(); response.setCharacterEncoding("utf-8"); PrintWriter pw = null; try { pw = response.getWriter(); pw.write(jarray.toString()); } catch (IOException e) { e.printStackTrace(); } pw.flush(); pw.close(); return null; } }
TreeNode.java:
package com.cz.model; public class TreeNode { private String id; private String pId; private String name; private Boolean isParent; private Boolean hasChild; 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 Boolean getIsParent() { return isParent; } public void setIsParent(Boolean isParent) { this.isParent = isParent; } public Boolean getHasChild() { return hasChild; } public void setHasChild(Boolean hasChild) { this.hasChild = hasChild; } }
效果图:
本文转自：http://xiaoxiaomuyu.iteye.com/blog/1929490
ztree学习之异步加载节点（一）
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