1.先來介紹一下. dtree 的用法.(我引用了以前我收集的一篇文章.還比較詳細,出處不記得啦).文章下面會附帶dtree用法的例子.
Dtree目錄樹的總結
一：函數
1：頁面中
tree.add(id,pid,name,url,title,target,icon,iconOpen,open);
參數說明：
id ：節點自身的id
pid ：節點的父節點的id
name ：節點顯示在頁面上的名稱
url ：節點的鏈接地址
title ：鼠標放在節點上所出現的提示信息
target ：節點鏈接所打開的目標frame(如框架目標mainFrame,_blank,_self 類)
icon ：節點關閉時的顯示圖片的路徑
iconOpen：節點打開時的顯示圖片的路徑
open ：布爾型，節點是否打開（默認爲false）
注：open項：頂級節點一般採用true，即pid是－1的節點
2：dtree.js文件中
約87－113行是一些默認圖片的路徑，注意要指對。
二：頁面中的書寫
1：默認值的書寫規則（從左至右，依次省略）
即 tree.add(id,pid,name,url);後面5個參數可以省略
2：有間隔時的默認值（如存在第6個參數，但第5個參數想用默認值）
即 tree.add(id,pid,name,url,"",target);必須這樣寫
3：樣式表
（1）：可以將dtree.css中的樣式附加到你的應用中的主css中，如a.css
（2）：也可以同時引用dtree.css與a.css兩個文件，但前提條件是兩個css文件中不能有重複的樣式
<link href="/jingjindatabase/pub/css/a.css" rel="stylesheet" type="text/css" />
<link href="/jingjindatabase/pub/css/dtree.css" rel="stylesheet" type="text/css" />
4：頁面代碼書寫的位置是：一般寫在表格的td之中
<script type="text/javascript" src="/myMobanGis/pub/js/dtree.js"></script>
<script type="text/javascript">
tree = new dTree('tree');
tree.add("1","-1","京津","","","","","",true);
tree.add("11","1","A","","","","","",true);
tree.add("110","11","A-1","content.jsp?moduleName=XXX","","mainFrame");
tree.add("111","11","A-2","javascript:void(0)","","鏈接在哪裏顯示");
tree.add("112","11","A-3","javascript:void(0)","","mainFrame");
tree.add("113","11","A-4","/.jsp","","mainFrame");
tree.add("114","11","A-5","/.jsp","","mainFrame");
tree.add("115","11","A-6","/.jsp","","mainFrame");
tree.add("12","1","B","","","","","",true);
tree.add("121","12","B-1","javascript:調用本頁內的js函數","","mainFrame");
tree.add("122","12","B-2");
tree.add("13","1","C","","","","","",true);
tree.add("131","13","C-1","javascript:void(0)","","mainFrame");
tree.add("132","13","C-2","javascript:void(0)","","mainFrame");
tree.add("133","13","C-3","javascript:void(0)","","mainFrame");
tree.add("14","1","D","","","","","",true);
tree.add("141","14","D-1","javascript:void(0)","","mainFrame");
document.write(tree);
</script>
說明：這是靜態的代碼，動態的可用循環加入。其他 tree.add(id,pid,name,url,"","","","",true);
三：css文件的註解
1:dtree.css
.dtree {//定義目錄樹節點的字體，字號，顏色
font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
font-size: 12px;
color: #006600;
white-space: nowrap;
}
.dtree img {//定義選用節點圖標的樣式，位置
border: 0px;
vertical-align: middle;
}
.dtree a {//
color: #006600;
text-decoration: none;
}
.dtree a.node, .dtree a.nodeSel {
white-space: nowrap;
padding: 0px 0px 0px 0px;
}
.dtree a.node:hover, .dtree a.nodeSel:hover {
color: #006600;
text-decoration: none;
}
.dtree a.nodeSel {
background-color: #c0d2ec;
}
.dtree .clip {
overflow: hidden;
}
a = new dTree('a');
a.config.useStatusText=true;
a.config.closeSameLevel=true;
a.config.useCookies=false;
a.add(0,-1,'Tree example','javascript: void(0);');
a.add(1, 0,'Node 1','javascript:void(0);');
a.add(2, 1,'Node 2','javascript:void(0);');
a.add(3, 1,'Node 3','javascript:void(0);');
a.add(4, 0,'Node 4','javascript:void(0);');
a.add(5, 4,'Node 5','javascript:void(0);');
a.add(6, 4,'Node 6','javascript:void(0);');
a.add(7, 2,'Node 7','javascript:void(0);');
a.add(8, 6,'Node 8','javascript:void(0);');
a.add(9, 1,'Node 9','javascript:void(0);');
a.add(10, 2,'Node 10','javascript:void(0);');
a.add(11, 8,'Node 11','javascript:void(0);');
a.add(12, 2,'Node 12','javascript:void(0);');
a.add(13, 9,'Node 13','javascript:void(0);');
a.add(14, 4,'Node 14','javascript:void(0);');
a.add(15, 2,'Node 15','javascript:void(0);');
a.add(16, 1,'Node 16','javascript:void(0);');
a.add(17, 4,'Node 17','javascript:void(0);');
a.add(18, 6,'Node 18','javascript:void(0);');
a.add(19, 7,'Node 19','javascript:void(0);');
document.write(a);
tree2.jsp demo中的一個jsp頁面. 靜態的生成一棵樹. (二級節點)
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>樹形結構_____普通生成樹的方式</title>
<link rel="stylesheet" href="dtree.css" type="text/css"></link>
<script type="text/javascript" src="dtree.js"></script>
<script>
/*
tree.add(id,pid,name,url,title,target,icon,iconOpen,open);
id ：節點自身的id
pid ：節點的父節點的id
name ：節點顯示在頁面上的名稱
url ：節點的鏈接地址
title ：鼠標放在節點上所出現的提示信息
target ：節點鏈接所打開的目標frame（如框架目標mainFrame或是_blank,_self之類）
icon ：節點關閉時的顯示圖片的路徑
iconOpen ：節點打開時的顯示圖片的路徑
open ：布爾型，節點是否打開（默認爲false）
------------------------------------------------
東城區、西城區、崇文區、宣武區、朝陽區、豐臺區、石景山區、
海淀區、門頭溝區、房山區、通州區、順義區、 昌平區、
大興區、懷柔區、平谷區 、 密雲縣、延慶縣
------------------------------------------------
*/
</script>
<script type="text/javascript">
tree = new dTree('tree');//創建一個對象.
tree.add("1","-1","中國","","","","","",false);
tree.add("11","1","北京","","","","","",false);
tree.add("110","11","東城區","連接地址可以從數據庫裏面動態查詢出來..","東城區","打開目標位置");
tree.add("111","11","西城區","連接地址可以從數據庫裏面動態查詢出來..","","鏈接在哪裏顯示");
tree.add("112","11","崇文區","連接地址可以從數據庫裏面動態查詢出來..","","mainFrame");
tree.add("113","11","宣武區","","","_blank");
tree.add("114","11","朝陽區","/.jsp","","mainFrame");
tree.add("115","11","豐臺區","/.jsp","","mainFrame");
tree.add("116","11","石景山區","/.jsp","","mainFrame");
tree.add("117","11","海淀區","/.jsp","","mainFrame");
tree.add("118","11","門頭溝區","/.jsp","","mainFrame");
tree.add("119","11","房山區","/.jsp","","mainFrame");
tree.add("120","11","通州區","/.jsp","","mainFrame");
tree.add("121","11","順義區","/.jsp","","mainFrame");
tree.add("122","11","昌平區","/.jsp","","mainFrame");
tree.add("123","11","大興區","/.jsp","","mainFrame");
tree.add("124","11","懷柔區","/.jsp","","mainFrame");
tree.add("125","11","平谷區","/.jsp","","mainFrame");
tree.add("126","11","延慶縣","/.jsp","","mainFrame");
tree.add("127","11","密雲縣","/.jsp","","mainFrame");
//==================================================
tree.add("12","1","湖南","","","","","",false);
tree.add("121","12","株洲","javascript:調用本頁內的js函數","","mainFrame");
tree.add("122","12","長沙");
//====================================================
tree.add("13","1","湖北","","","","","",false);
tree.add("131","13","武漢","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","廣東","","","","","",false);
tree.add("141","14","佛山","javascript:void()","","mainFrame");
document.write(tree);
</script>
</head>
<body>
</body>
</html>
不羅嗦啦..上面的只是讓你大概瞭解一下.dtree怎麼用.
dtree+JQuery動態生成樹.思路其實很簡單... 首先把樹的節點信息存儲到數據庫,然後在servlet或jsp中獲取數據庫表中的數據,把這些信息寫成在xml文件中.然後界面jsp頁面通過JQuery實現對改servlet的請求.並且回調方法中接受xml數據對象.並且遍歷xml文件,取得xml文件中的節點的屬性或文本數據.再循環的對dtree添加節點.。
1 . 在 MYSQL 中的test數據庫中創建表.tree_table.
SQL語句.
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
2.連接數據庫的類.主要是讀取表中的數據.
package com.dao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
public class DaoTest {
Connection con = null;
public Connection getConnection() {
Connection conn = null;
String url = "jdbc:mysql://localhost/test?useUnicode=true&characterEncoding=gbk";
String user = "root";
String password = "admin";
try {
if (conn == null) {
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection(url, user, password);
}
} catch (Exception e) {
System.out.println("連接失敗");
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;
}
}
3. 節點。JAVABEAN.類.
package com.dao;
public class Nodes {
private int id;
private String nodeId;
private String parentId;
private String hrefAddress;
private String nodeName;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getNodeId() {
return nodeId;
}
public void setNodeId(String nodeId) {
this.nodeId = nodeId;
}
public String getParentId() {
return parentId;
}
public void setParentId(String parentId) {
this.parentId = parentId;
}
public String getHrefAddress() {
return hrefAddress;
}
public void setHrefAddress(String hrefAddress) {
this.hrefAddress = hrefAddress;
}
public String getNodeName() {
return nodeName;
}
public void setNodeName(String nodeName) {
this.nodeName = nodeName;
}
}
4.創建一個Serlvet 來生成xml文件.
注意: response.setContentType("text/xml;charset=utf-8");
package com.handler;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.dao.DaoTest;
import com.dao.Nodes;
public class NodesPrint extends HttpServlet {
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 {
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>");
}
}
}
5. 將dtree.js 和dtree.css，jquery.js, img文件夾.放在WebRoot下面.(工程的根目錄)
6. 編寫我們的tree.jsp頁面.
<%@ page language="java" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>樹形結構___ajax請求方式</title>
<script type="text/javascript" src="dtree.js"></script>
<script type="text/javascript" src="jquery.js"></script>
<link rel="stylesheet" href="dtree.css" type="text/css"></link>
<script type="text/javascript">
tree = new dTree('tree');//創建一個對象.
$.ajax({
url:'NodesPrint',
type:'post', //數據發送方式
dataType:'xml', //接受數據格式
error:function(json){
alert( "not lived!");
},
async: false ,//同步方式
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);
</script>
</head>
<body>
</body>
</html>
dTree+jquery生成樹
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