求动态树节点的操作

啊彪123 2009-05-25 05:11:25

本人用dtree做成了一棵动态树，
步骤1.pojo类

package com.gdcn.admin;



import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.SQLException;



import org.apache.log4j.Logger;



import com.gdcn.database.ConnectionManager;



public class Group {

	private static Logger logger = Logger.getLogger(Group.class);

	

	private long groupID = -1;

	private String groupName;

	private int typeID;

	private int orderID;

	private int groupLayer;

	private long parentID = -1;

	private int isUse;

	

	public long getGroupID() {

		return groupID;

	}

	public void setGroupID(long groupID) {

		this.groupID = groupID;

	}

	public String getGroupName() {

		return groupName;

	}

	public void setGroupName(String groupName) {

		this.groupName = groupName;

	}

	public int getTypeID() {

		return typeID;

	}

	public void setTypeID(int typeID) {

		this.typeID = typeID;

	}

	public int getOrderID() {

		return orderID;

	}

	public void setOrderID(int orderID) {

		this.orderID = orderID;

	}

	public int getGroupLayer() {

		return groupLayer;

	}

	public void setGroupLayer(int groupLayer) {

		this.groupLayer = groupLayer;

	}

	public long getParentID() {

		return parentID;

	}

	public void setParentID(long parentID) {

		this.parentID = parentID;

	}

	public int getIsUse() {

		return isUse;

	}

	public void setIsUse(int isUse) {

		this.isUse = isUse;

	}

	public Group() {

		

	}

2.业务类，可以测试生成的结构



package com.gdcn.admin;



import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.util.ArrayList;

import java.util.List;



import org.apache.log4j.Logger;



import com.gdcn.database.ConnectionManager;



public class GroupImpl {

	private static Logger logger = Logger.getLogger(GroupImpl.class);

	

	

	public static List retrieveNodeInfos(){

		List list = new ArrayList();

		Connection conn = null ;

		PreparedStatement pstmt = null;

		ResultSet rs = null;

		try{

			conn = ConnectionManager.getConnection();

			String sql = "select * FROM tgroup WHERE isuse=1";

			pstmt = conn.prepareStatement(sql);

			rs = pstmt.executeQuery();

			while(rs!=null && rs.next()){

				Group group = new Group();

				int i =1;

			    group.setGroupID(rs.getLong(i++));

			    group.setGroupName(rs.getString(i++));

			    group.setTypeID(rs.getInt(i++));

			    group.setOrderID(rs.getInt(i++));

			    group.setGroupLayer(rs.getInt(i++));

			    group.setParentID(rs.getLong(i++));

			    list.add(group);

			}		 

		}catch(Exception e){

			System.out.println(e);

			logger.error(e);

		}finally {

			ConnectionManager.closeObject(conn, pstmt, rs);

		}

		return list;

	}

	

	public static String createTreeInfo(List alist){

	    StringBuffer contents = new StringBuffer();

	    contents.append("<script type=\"text/javascript\">\n");

		contents.append("d = new dTree('d');\n");

		Group group =null;

		for(int max = alist.size(),i=0;i<max;i++){

			 group = (Group)alist.get(i);

			 contents.append("d.add("+group.getGroupID()+",");

			 contents.append(group.getParentID()+",");

			 contents.append("'"+group.getGroupName()+"',");

			 contents.append("\"group2.jsp?groupID="+group.getGroupID()+"\",\"\",\"group2\"");

			 contents.append(");\n");

			 

		}

		contents.append("document.write(d);\n");

		contents.append("</script>");

		return contents.toString();

   }

   public String getMenuJS(){

	   List list = GroupImpl.retrieveNodeInfos();

	   String js = GroupImpl.createTreeInfo(list);

	   return js;

   }

   public static void main(String[] args) {

	   List list = GroupImpl.retrieveNodeInfos();

	   System.out.println(GroupImpl.createTreeInfo(list));

	   }

}

...全文

39 2 打赏收藏转发到动态举报

写回复

用AI写文章

2 条回复

切换为时间正序

请发表友善的回复…

发表回复

啊彪123 2009-05-25

打赏
举报

本人研究半个月了，老板催的我好狼狈了。

求助啊

啊彪123 2009-05-25

打赏
举报

3.jsp
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<%@ page contentType="text/html; charset=GBK" language="java"%>
<%@ page import="com.gdcn.admin.*"%>
<html>
<head>
<title>Tree</title>
<link rel="StyleSheet" href="dtree.css" type="text/css" />
<script type="text/javascript" src="dtree.js"></script>
</head>
<body>

<div class='dtree'>
　　　　　　　　　　　 <%
GroupImpl gl = new GroupImpl();
out.println(gl.getMenuJS());
%>

　　　　　　　 </div>

</body>
</html>

4，请求高手指点下，在jsp里创建子节点，移动子节点的代码