dtree和jquery构建树型结构

<link rel="StyleSheet" href="dtree.css" type="text/css" />
	<script type="text/javascript" src="dtree.js"></script>

<script>
		       /*   
			 		tree.add(id,pid,name,url,title,target,icon,iconOpen,open);
				    id        ：节点自身的id
					pid       ：节点的父节点的id
					name      ：节点显示在页面上的名称
					url       ：节点的链接地址
					title     ：鼠标放在节点上所出现的提示信息
					target    ：节点链接所打开的目标frame（如框架目标mainFrame或是_blank,_self之类）
					icon      ：节点关闭时的显示图片的路径
					iconOpen  ：节点打开时的显示图片的路径
					open      ：布尔型，节点是否打开（默认为false）
				    ------------------------------------------------
				    东城区、西城区、崇文区、宣武区、朝阳区、丰台区、石景山区、
				    海淀区、门头沟区、房山区、通州区、顺义区、 昌平区、
				   大兴区、怀柔区、平谷区 、 密云县、延庆县
				   ------------------------------------------------
				*/
		</script>
				<script type="text/javascript">
				 tree = new dTree('tree');//创建一个对象.
				 tree.add("1","-1","中国","","","","","",false);
				 tree.add("11","1","北京","","","","","",false);
				 tree.add("110","11","东城区","连接地址可以从数据库里面动态查询出来..","东城区","打开目标位置");
				 tree.add("111","11","西城区","连接地址可以从数据库里面动态查询出来..","","链接在哪里显示");
				 tree.add("112","11","崇文区","连接地址可以从数据库里面动态查询出来..","","mainFrame");
				 tree.add("113","11","宣武区","","","_blank");
				 tree.add("114","11","朝阳区","/.jsp","","mainFrame");
				 tree.add("115","11","丰台区","/.jsp","","mainFrame");
				 tree.add("116","11","石景山区","/.jsp","","mainFrame");
				 tree.add("117","11","海淀区","/.jsp","","mainFrame");
				 tree.add("118","11","门头沟区","/.jsp","","mainFrame");
				 tree.add("119","11","房山区","/.jsp","","mainFrame");
				 tree.add("120","11","通州区","/.jsp","","mainFrame");
				 tree.add("121","11","顺义区","/.jsp","","mainFrame"); 
				 tree.add("122","11","昌平区","/.jsp","","mainFrame");
				 tree.add("123","11","大兴区","/.jsp","","mainFrame");
				 tree.add("124","11","怀柔区","/.jsp","","mainFrame");
				 tree.add("125","11","平谷区","/.jsp","","mainFrame");
				 tree.add("126","11","延庆县","/.jsp","","mainFrame");
				 tree.add("127","11","密云县","/.jsp","","mainFrame");
				 //==================================================
				 tree.add("12","1","湖南","","","","","",false);
				 tree.add("121","12","株洲","javascript:调用本页内的js函数","","mainFrame");
				 tree.add("122","12","长沙");
				//====================================================
				 tree.add("13","1","湖北","","","","","",false);
				 tree.add("131","13","武汉","javascript:void()","","mainFrame");
				 tree.add("132","13","宜昌","javascript:void()","","mainFrame");
				 tree.add("133","13","孝感","javascript:void()","","mainFrame");
				 //===================================================	 
				 tree.add("14","1","广东","","","","","",false);
				 tree.add("141","14","佛山","javascript:void()","","mainFrame");
				 document.write(tree);
			    </script>

Functions
add()
Adds a node to the tree.
Can only be called before the tree is drawn.

id, pid and name are required.

Parameters
Name Type Description 
id Number Unique identity number. 
pid Number Number refering to the parent node. The value for the root node has to be -1. 
name String Text label for the node. 
url String Url for the node. 
title String Title for the node. 
target String Target for the node. 
icon String Image file to use as the icon. Uses default if not specified. 
iconOpen String Image file to use as the open icon. Uses default if not specified. 
open Boolean Is the node open. 


Example
mytree.add(1, 0, 'My node', 'node.html', 'node title', 'mainframe', 'img/musicfolder.gif');


openAll()
Opens all the nodes.
Can be called before and after the tree is drawn.

Example
mytree.openAll();


closeAll()
Closes all the nodes.
Can be called before and after the tree is drawn.

Example
mytree.closeAll();


openTo()
Opens the tree to a certain node and can also select the node.
Can only be called after the tree is drawn.

Parameters
Name Type Description 
id Number Identity number for the node. 
select Boolean Should the node be selected. 

Example
mytree.openTo(4, true);

Configuration
Variable Type Default Description 
target String true Target for all the nodes. 
folderLinks Boolean true Should folders be links. 
useSelection Boolean true Nodes can be selected(highlighted). 
useCookies Boolean true The tree uses cookies to rember it's state. 
useLines Boolean true Tree is drawn with lines. 
useIcons Boolean true Tree is drawn with icons. 
useStatusText Boolean false Displays node names in the statusbar instead of the url. 
closeSameLevel Boolean false Only one node within a parent can be expanded at the same time. openAll() and closeAll() functions do not work when this is enabled. 
inOrder Boolean false If parent nodes are always added before children, setting this to true speeds up the tree. 

DROP TABLE IF EXISTS `tree_table`;

CREATE TABLE `tree_table` (
  `id` int(11) NOT NULL auto_increment,
  `nodeId` varchar(12) NOT NULL  ,
  `parentId` varchar(12) NOT NULL  ,
  `hrefAddress` varchar(85)  ,
  `nodeName` varchar(20)  ,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;

insert  into `tree_table`(`id`,`nodeId`,`parentId`,`hrefAddress`,`nodeName`) values (1,'1','-1','http://www.sohu.com','北京');

insert  into `tree_table`(`id`,`nodeId`,`parentId`,`hrefAddress`,`nodeName`) values (1,'1','-1','http://www.sohu.com','海淀区');

Connection con = null;

	public Connection getConnection() {
		Connection conn = null;
		String url = "jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=gbk";
		String user = "root";
		String password = "mytopicforever";
		try {
			if (conn == null) {
				Class.forName("com.mysql.jdbc.Driver").newInstance();
				conn = DriverManager.getConnection(url, user, password);
			}
		} catch (Exception e) {
			System.out.println("连接失败");
			return null;
		} finally {
			url = null;
			user = null;
			password = null;
		}
		return conn;
	}

	public ArrayList<Nodes> getNodeInfo() {
		String sql = "select nodeId ,parentId ,hrefAddress ,nodeName from tree_table order by id ";
		PreparedStatement pre = null;
		Connection conn = null;
		conn = getConnection();
		ResultSet rs = null;
		ArrayList<Nodes> list = new ArrayList<Nodes>();
		try {
			pre = conn.prepareStatement(sql);
			rs =pre.executeQuery();
			while (rs.next()){
				Nodes node = new Nodes();
				node.setHrefAddress(rs.getString("hrefAddress"));
				node.setNodeId(rs.getString("nodeId"));
				node.setParentId(rs.getString("parentId"));
				node.setNodeName(rs.getString("nodeName"));
				list.add(node);
			}
			rs.close();
			pre.close();
			conn.close();
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			 pre = null;
			 conn = null;
			 rs = null;
		}
        return list;
	}

private int id;
	private String nodeId;
	private String parentId;
	private String hrefAddress;
	private String nodeName;

....set/get

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>NodesPrint</servlet-name>
    <servlet-class>com.handler.NodesPrint</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>NodesPrint</servlet-name>
    <url-pattern>/NodesPrint</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

	private static final long serialVersionUID = 1L;
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
                 doPost(request, response);
	}
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		   System.out.println("调用了.........");
           request.setCharacterEncoding("utf-8");
           response.setContentType("text/xml;charset=utf-8");
           PrintWriter out = response.getWriter();
           DaoTest test = new DaoTest();
    	   ArrayList<Nodes> list=  test.getNodeInfo();
    	    if(list!=null&&list.size()>0){
    	    	out.println("<?xml version="1.0" encoding="UTF-8"?>");
    	        out.println("<nodes>");
    	    	for(int i=0;i<list.size();i++){
    	    		Nodes node = list.get(i);
    	    		out.println("<node nodeId='"+node.getNodeId()+"' parentId='"+node.getParentId()+"' hrefAddress='"+node.getHrefAddress()+"'>"+node.getNodeName()+"</node>");
    	    	}
    	    	out.println("</nodes>");
    	    }
	}

tree = new dTree('tree');//创建一个对象.
								$.ajax({ 
										url:'NodesPrint', 
										type:'post', //数据发送方式 
										dataType:'xml', //接受数据格式 
										error:function(json){
				   							     alert( "not lived!");
											  },
										async: false ,
										success: function(xml){
				 								    $(xml).find("node").each(function(){ 
														  var nodeId=$(this).attr("nodeId");  
					  									  var parentId=$(this).attr("parentId");  
														  var hrefAddress=$(this).attr("hrefAddress");  
														  var nodeName=$(this).text(); 
														  tree.add(nodeId,parentId,nodeName,hrefAddress,"","","","",false);
								                     });
								                }
								  });
				      document.write(tree);