JSP 动态树的实现

  第一步:在开始之前我们需要准备这么一个js文件,代码如下。我姑且将它命名为tree.js。

  

复制代码 代码如下:

  function Node(id, pid, name, url, title, target, icon, iconOpen, open, appendedStr) {

  this.id = id;

  this.pid = pid;

  this.name = name;

  this.url = url;

  this.title = title;

  this.target = target;

  this.icon = icon;

  this.iconOpen = iconOpen;

  this.appendedStr = appendedStr;

  this._io = open || false;

  this._is = false;

  this._ls = false;

  this._hc = false;

  this._ai = 0;

  this._p;

  };

  // Tree object

  function tree(objName,path) {

  this.path = path;

  this.config = {

  target                    : null,

  folderLinks            : true,

  useSelection        : true,

  useCookies            : true,

  useLines                : true,

  useIcons                : true,

  useStatusText        : false,

  closeSameLevel    : false,

  inOrder                    : false

  }

  this.icon = {

  root                : path + 'TreeDemo/images/tree_base.gif',

  folder            : path + 'TreeDemo/images/tree_folder.gif',

  folderOpen    : path + 'TreeDemo/images/tree_folderopen.gif',

  node                : path + 'TreeDemo/images/tree_folder.gif',

  empty                : path + 'TreeDemo/images/tree_empty.gif',

  line                : path + 'TreeDemo/images/tree_line.gif',

  join                : path + 'TreeDemo/images/tree_join.gif',

  joinBottom    : path + 'TreeDemo/images/tree_joinbottom.gif',

  plus                : path + 'TreeDemo/images/tree_plus.gif',

  plusBottom    : path + 'TreeDemo/images/tree_plusbottom.gif',

  minus                : path + 'TreeDemo/images/tree_minus.gif',

  minusBottom    : path + 'TreeDemo/images/tree_minusbottom.gif',

  nlPlus            : path + 'TreeDemo/images/tree_nolines_plus.gif',

  nlMinus            : path + 'TreeDemo/images/tree_nolines_minus.gif'

  };

  this.obj = objName;

  this.aNodes = [];

  this.aIndent = [];

  this.root = new Node(-1);

  this.selectedNode = null;

  this.selectedFound = false;

  this.completed = false;

  };

  // Adds a new node to the node array

  tree.prototype.add = function(id, pid, name, url, title, target, icon, iconOpen, open, appendedStr) {

  this.aNodes[this.aNodes.length] = new Node(id, pid, name, url, title, target, icon, iconOpen, open, appendedStr);

  };

  // Open/close all nodes

  tree.prototype.openAll = function() {

  this.oAll(true);

  };

  tree.prototype.closeAll = function() {

  this.oAll(false);

  };

  // Outputs the tree to the page

  tree.prototype.toString = function() {

  var str = '<div class="tree">\n';

  if (document.getElementById) {

  if (this.config.useCookies) this.selectedNode = this.getSelected();

  str += this.addNode(this.root);

  } else str += 'Browser not supported.';

  str += '</div>';

  if (!this.selectedFound) this.selectedNode = null;

  this.completed = true;

  return str;

  };

  // Creates the tree structure

  tree.prototype.addNode = function(pNode) {

  var str = '';

  var n=0;

  if (this.config.inOrder) n = pNode._ai;

  for (n; n<this.aNodes.length; n++) {

  if (this.aNodes[n].pid == pNode.id) {

  var cn = this.aNodes[n];

  cn._p = pNode;

  cn._ai = n;

  this.setCS(cn);

  if (!cn.target && this.config.target) cn.target = this.config.target;

  if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);

  if (!this.config.folderLinks && cn._hc) cn.url = null;

  if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound) {

  cn._is = true;

  this.selectedNode = n;

  this.selectedFound = true;

  }

  str += this.node(cn, n);

  if (cn._ls) break;

  }

  }

  return str;

  };

  // Creates the node icon, url and text

  tree.prototype.node = function(node, nodeId) {

  var str = '<div class="treeNode">' + this.indent(node, nodeId);

  if (this.config.useIcons) {

  if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root : ((node._hc) ? this.icon.folder : this.icon.node);

  if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen : this.icon.node;

  if (this.root.id == node.pid) {

  node.icon = this.icon.root;

  node.iconOpen = this.icon.root;

  }

  str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" src="' + ((node._io) ? node.iconOpen : node.icon) + '" alt="" />';

  }

  if (node.url) {

  str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel' : 'node')) : 'node') + '" href="' + node.url + '" href="' + node.url + '"';

  if (node.title) str += ' title="' + node.title + '"';

  if (node.target) str += ' target="' + node.target + '"';

  if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';return true;" onmouseout="window.status=\'\';return true;" ';

  if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))

  str += ' onclick="javascript: ' + this.obj + '.s(' + nodeId + ');"';

  str += '>';

  }

  else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)

  str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" href="javascript: ' + this.obj + '.o(' + nodeId + ');" class="node">';

  str += node.name;

  if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';

  //[!--begin--]add by wangxr to append str

  if(node.appendedStr) str += node.appendedStr;

  //[!--end--]

  str += '</div>';

  if (node._hc) {

  str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';" style="display:' + ((this.root.id == node.pid || node._io) ? 'block' : 'none') + ';">';

  str += this.addNode(node);

  str += '</div>';

  }

  this.aIndent.pop();

  return str;

  };

  // Adds the empty and line icons

  tree.prototype.indent = function(node, nodeId) {

  var str = '';

  if (this.root.id != node.pid) {

  for (var n=0; n<this.aIndent.length; n++)

  str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line : this.icon.empty ) + '" alt="" />';

  (node._ls) ? this.aIndent.push(0) : this.aIndent.push(1);

  if (node._hc) {

  str += '<a href="javascript: ' + this.obj + '.o(' + nodeId + ');" href="javascript: ' + this.obj + '.o(' + nodeId + ');"><img id="j' + this.obj + nodeId + '" src="';

  if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus;

  else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) );

  str += '" src="'; if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus : this.icon.nlPlus; else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom : this.icon.minus) : ((node._ls && this.config.useLines) ? this.icon.plusBottom : this.icon.plus ) ); str += '" alt="" /></a>';

  } else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom : this.icon.join ) : this.icon.empty) + '" alt="" />';

  }

  return str;

  };

  // Checks if a node has any children and if it is the last sibling

  tree.prototype.setCS = function(node) {

  var lastId;

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n].pid == node.id) node._hc = true;

  if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;

  }

  if (lastId==node.id) node._ls = true;

  };

  // Returns the selected node

  tree.prototype.getSelected = function() {

  var sn = this.getCookie('cs' + this.obj);

  return (sn) ? sn : null;

  };

  // Highlights the selected node

  tree.prototype.s = function(id) {

  if (!this.config.useSelection) return;

  var cn = this.aNodes[id];

  if (cn._hc && !this.config.folderLinks) return;

  if (this.selectedNode != id) {

  if (this.selectedNode || this.selectedNode==0) {

  eOld = document.getElementById("s" + this.obj + this.selectedNode);

  eOld.className = "node";

  }

  eNew = document.getElementById("s" + this.obj + id);

  eNew.className = "nodeSel";

  this.selectedNode = id;

  if (this.config.useCookies) this.setCookie('cs' + this.obj, cn.id);

  }

  };

  // Toggle Open or close

  tree.prototype.o = function(id) {

  var cn = this.aNodes[id];

  this.nodeStatus(!cn._io, id, cn._ls);

  cn._io = !cn._io;

  if (this.config.closeSameLevel) this.closeLevel(cn);

  if (this.config.useCookies) this.updateCookie();

  };

  // Open or close all nodes

  tree.prototype.oAll = function(status) {

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id) {

  this.nodeStatus(status, n, this.aNodes[n]._ls)

  this.aNodes[n]._io = status;

  }

  }

  if (this.config.useCookies) this.updateCookie();

  };

  // Opens the tree to a specific node

  tree.prototype.openTo = function(nId, bSelect, bFirst) {

  if (!bFirst) {

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n].id == nId) {

  nId=n;

  break;

  }

  }

  }

  var cn=this.aNodes[nId];

  if (cn.pid==this.root.id || !cn._p) return;

  cn._io = true;

  cn._is = bSelect;

  if (this.completed && cn._hc) this.nodeStatus(true, cn._ai, cn._ls);

  if (this.completed && bSelect) this.s(cn._ai);

  else if (bSelect) this._sn=cn._ai;

  this.openTo(cn._p._ai, false, true);

  };

  // Closes all nodes on the same level as certain node

  tree.prototype.closeLevel = function(node) {

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc) {

  this.nodeStatus(false, n, this.aNodes[n]._ls);

  this.aNodes[n]._io = false;

  this.closeAllChildren(this.aNodes[n]);

  }

  }

  }

  // Closes all children of a node

  tree.prototype.closeAllChildren = function(node) {

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc) {

  if (this.aNodes[n]._io) this.nodeStatus(false, n, this.aNodes[n]._ls);

  this.aNodes[n]._io = false;

  this.closeAllChildren(this.aNodes[n]);

  }

  }

  }

  // Change the status of a node(open or closed)

  tree.prototype.nodeStatus = function(status, id, bottom) {

  eDiv    = document.getElementById('d' + this.obj + id);

  eJoin    = document.getElementById('j' + this.obj + id);

  if (this.config.useIcons) {

  eIcon    = document.getElementById('i' + this.obj + id);

  eIcon.src = (status) ? this.aNodes[id].iconOpen : this.aNodes[id].icon;

  }

  eJoin.src = (this.config.useLines)?

  ((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):

  ((status)?this.icon.nlMinus:this.icon.nlPlus);

  eDiv.style.display = (status) ? 'block': 'none';

  };

  // [Cookie] Clears a cookie

  tree.prototype.clearCookie = function() {

  var now = new Date();

  var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);

  this.setCookie('co'+this.obj, 'cookieValue', yesterday);

  this.setCookie('cs'+this.obj, 'cookieValue', yesterday);

  };

  // [Cookie] Sets value in a cookie

  tree.prototype.setCookie = function(cookieName, cookieValue, expires, path, domain, secure) {

  document.cookie =

  escape(cookieName) + '=' + escape(cookieValue)

  + (expires ? '; expires=' + expires.toGMTString() : '')

  + (path ? '; path=' + path : '')

  + (domain ? '; domain=' + domain : '')

  + (secure ? '; secure' : '');

  };

  // [Cookie] Gets a value from a cookie

  tree.prototype.getCookie = function(cookieName) {

  var cookieValue = '';

  var posName = document.cookie.indexOf(escape(cookieName) + '=');

  if (posName != -1) {

  var posValue = posName + (escape(cookieName) + '=').length;

  var endPos = document.cookie.indexOf(';', posValue);

  if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue, endPos));

  else cookieValue = unescape(document.cookie.substring(posValue));

  }

  return (cookieValue);

  };

  // [Cookie] Returns ids of open nodes as a string

  tree.prototype.updateCookie = function() {

  var str = '';

  for (var n=0; n<this.aNodes.length; n++) {

  if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id) {

  if (str) str += '.';

  str += this.aNodes[n].id;

  }

  }

  this.setCookie('co' + this.obj, str);

  };

  // [Cookie] Checks if a node id is in a cookie

  tree.prototype.isOpen = function(id) {

  var aOpen = this.getCookie('co' + this.obj).split('.');

  for (var n=0; n<aOpen.length; n++)

  if (aOpen[n] == id) return true;

  return false;

  };

  // If Push and pop is not implemented by the browser

  if (!Array.prototype.push) {

  Array.prototype.push = function array_push() {

  for(var i=0;i<arguments.length;i++)

  this[this.length]=arguments[i];

  return this.length;

  }

  };

  if (!Array.prototype.pop) {

  Array.prototype.pop = function array_pop() {

  lastElement = this[this.length-1];

  this.length = Math.max(this.length-1,0);

  return lastElement;

  }

  };

  由于代码太长,我这里就不给大家拿来细讲了,我们只要会用就OK。就像猪肉我们能吃就OK,不一定非要知道猪养。

  第二步:创建数据库,创建数据库的代码如下,我这边使用的是MySQL数据为。

  create database `treedemo`;

  use treedemo;

  create table trees(

  tid int primary key not null,

  pid int not null,

  tname varchar(50) not null,

  isleaf int

  );

  select * from trees;

  insert into trees(tid,pid,tname)values(0,-1,'组织内容');

  insert into trees(tid,pid,tname)values(1,0,'短信');

  insert into trees(tid,pid,tname)values(2,0,'彩信');

  insert into trees(tid,pid,tname)values(3,0,'新闻');

  insert into trees(tid,pid,tname)values(4,1,'移动生活');

  insert into trees(tid,pid,tname)values(5,1,'单条滚动点播');

  insert into trees(tid,pid,tname)values(6,2,'定制');

  insert into trees(tid,pid,tname)values(7,2,'点播');

  insert into trees(tid,pid,tname)values(8,3,'房产频道');

  insert into trees(tid,pid,tname)values(9,3,'农村频道');

  insert into trees(tid,pid,tname)values(10,3,'数码频道');

  insert into trees(tid,pid,tname)values(11,6,'幽默笑话');

  insert into trees(tid,pid,tname)values(12,7,'铃声');

  insert into trees(tid,pid,tname)values(13,7,'贺卡');

  insert into trees(tid,pid,tname)values(14,7,'动画');

  insert into trees(tid,pid,tname)values(15,13,'贺卡1');

  insert into trees(tid,pid,tname)values(16,13,'贺卡2');

  insert into trees(tid,pid,tname)values(17,13,'贺卡3');

  insert into trees(tid,pid,tname)values(18,13,'贺卡4');

  select * from trees;

  表字段的说明:

  (1)tid表示节点的编号;

  (2)pid 该节点父节点的编号;

  (3)tname 节点名称;

  (4)isleaf 表明该节点是否为叶节点,叶节点为1,非叶节点为0。该字段可根据实际情况增删。

  第三步:在myeclipse中创建一个WEB工程,命名为“TreeDemo”。在WebRoot文件夹下创建js文件夹、css文件夹、images文件夹分别用来存放.js文件、.css文件和项目中用到的图片文件。

  第四步:编写数据库连接类,其中的用户名、密码需要根据你数据库情况进行修改,代码如下。

  

复制代码 代码如下:

  package com.sx.mas.utils;

  import java.sql.Connection;

  import java.sql.DriverManager;

  import java.sql.SQLException;

  public class DBConn {

  private static final String DRIVER="com.mysql.jdbc.Driver";

  private static final String URL="jdbc:mysql://localhost:3306/treedemo";

  Connection conn=null;

  public Connection getConnection(){

  try {

  Class.forName(DRIVER);

  conn=DriverManager.getConnection(URL,"root","root");

  } catch (ClassNotFoundException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  } catch (SQLException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  return conn;

  }

  }

  package com.sx.mas.utils;

  import java.sql.Connection;

  import java.sql.DriverManager;

  import java.sql.SQLException;

  public class DBConn {

  private static final String DRIVER="com.mysql.jdbc.Driver";

  private static final String URL="jdbc:mysql://localhost:3306/treedemo";

  Connection conn=null;

  public Connection getConnection(){

  try {

  Class.forName(DRIVER);

  conn=DriverManager.getConnection(URL,"root","root");

  } catch (ClassNotFoundException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  } catch (SQLException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  return conn;

  }

  }

  第五步:编写javabean类,代码如下,

  

复制代码 代码如下:

  package com.sx.mas.beans;

  public class TreeNode {

  private int tid;

  private int pid;

  private String tname;

  private int isleaf;

  public int getTid() {

  return tid;

  }

  public void setTid(int tid) {

  this.tid = tid;

  }

  public int getPid() {

  return pid;

  }

  public void setPid(int pid) {

  this.pid = pid;

  }

  public String getTname() {

  return tname;

  }

  public void setTname(String tname) {

  this.tname = tname;

  }

  public int getIsleaf() {

  return isleaf;

  }

  public void setIsleaf(int isleaf) {

  this.isleaf = isleaf;

  }

  }

  package com.sx.mas.beans;

  public class TreeNode {

  private int tid;

  private int pid;

  private String tname;

  private int isleaf;

  public int getTid() {

  return tid;

  }

  public void setTid(int tid) {

  this.tid = tid;

  }

  public int getPid() {

  return pid;

  }

  public void setPid(int pid) {

  this.pid = pid;

  }

  public String getTname() {

  return tname;

  }

  public void setTname(String tname) {

  this.tname = tname;

  }

  public int getIsleaf() {

  return isleaf;

  }

  public void setIsleaf(int isleaf) {

  this.isleaf = isleaf;

  }

  }

  第六步:创建相关的DAO类,代码如下。DAO类将数据库表装保存到Vector对象中。

  

复制代码 代码如下:

  package com.sx.mas.beans;

  import java.sql.Connection;

  import java.sql.ResultSet;

  import java.sql.SQLException;

  import java.sql.Statement;

  import java.util.Vector;

  import com.sx.mas.utils.DBConn;

  public class TreeDAO {

  public Vector getTree(){

  Vector vec = new Vector();

  DBConn dbconn = new DBConn();

  Connection conn = dbconn.getConnection();

  try {

  Statement stmt = conn.createStatement();

  ResultSet rs = stmt.executeQuery("select * from trees");

  while(rs.next()){

  TreeNode treenode = new TreeNode();

  treenode.setTid(rs.getInt("tid"));

  treenode.setPid(rs.getInt("pid"));

  treenode.setTname(rs.getString("tname"));

  treenode.setIsleaf(rs.getInt("isleaf"));

  vec.add(treenode);

  }

  } catch (SQLException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  return vec;

  }

  }

  package com.sx.mas.beans;

  import java.sql.Connection;

  import java.sql.ResultSet;

  import java.sql.SQLException;

  import java.sql.Statement;

  import java.util.Vector;

  import com.sx.mas.utils.DBConn;

  public class TreeDAO {

  public Vector getTree(){

  Vector vec = new Vector();

  DBConn dbconn = new DBConn();

  Connection conn = dbconn.getConnection();

  try {

  Statement stmt = conn.createStatement();

  ResultSet rs = stmt.executeQuery("select * from trees");

  while(rs.next()){

  TreeNode treenode = new TreeNode();

  treenode.setTid(rs.getInt("tid"));

  treenode.setPid(rs.getInt("pid"));

  treenode.setTname(rs.getString("tname"));

  treenode.setIsleaf(rs.getInt("isleaf"));

  vec.add(treenode);

  }

  } catch (SQLException e) {

  // TODO Auto-generated catch block

  e.printStackTrace();

  }

  return vec;

  }

  }

  第七步:页面上显示树状结构。在TreeDemo中创建show_tree.jsp页面,代码如下。

  

复制代码 代码如下:

  <%@ page language="java" import="java.util.*" contentType="text/html; charset=gb2312"%>

  <%@ page import="com.sx.mas.beans.*" %>

  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

  <html>

  <head>

  <LINK href="css/tree.css" href="css/tree.css" type=text/css rel=stylesheet>

  <LINK href="css/css.css" href="css/css.css" rel=stylesheet>

  <SCRIPT src="js/tree.js" src="js/tree.js" type=text/javascript></SCRIPT>

  <title>My JSP 'index.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" type="text/css" href="styles.css" href="styles.css">

  -->

  </head>

  <body onresize="return true;" leftMargin=1 topMargin=1>

  <table>

  <tr>

  <td valign="top">

  <TABLE class=table_left_menu cellSpacing=0 cellPadding=0 width="100%"

  background=images/tree_bg.gif border=0>

  <TBODY>

  <TR>

  <TD>

  <DIV align=center><IMG height=24 src="images/tree_button.gif" src="images/tree_button.gif"

  width=147 useMap=#Map border=0>

  <MAP id=Map name=Map>

  <AREA shape="RECT" shape="RECT" coords="16,3,69,15" coords="16,3,69,15" href="javascript:%20d.openAll()" href="javascript:%20d.openAll()">

  <AREA shape="RECT" shape="RECT" coords="72,3,131,15" coords="72,3,131,15" href="javascript:%20d.closeAll()" href="javascript:%20d.closeAll()">

  </MAP>

  </DIV>

  </TD>

  </TR>

  </TBODY>

  </TABLE>

  <SCRIPT type=text/javascript>

  d = new tree('d','../');

  <%

  TreeDAO treedao = new TreeDAO();

  Vector vec =treedao.getTree();

  Iterator iterator = vec.iterator();

  while(iterator.hasNext()){

  TreeNode treenode = (TreeNode)iterator.next();

  if(treenode.getIsleaf()==0){

  %>

  d.add(<%=treenode.getTid()%>,<%=treenode.getPid()%>,'<%=treenode.getTname()%>')

  <%}else{%>

  d.add(<%=treenode.getTid()%>,<%=treenode.getPid()%>,'<%=treenode.getTname()%>',parent.getUrlByCatalogId('<%=treenode.getTid()%>'),null,'list');

  <%}}%>

  document.write(d);

  </SCRIPT>

  </td>

  </tr>

  </table>

  </body>

  </html>

  <%@ page language="java" import="java.util.*" contentType="text/html; charset=gb2312"%>

  <%@ page import="com.sx.mas.beans.*" %>

  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

  <html>

  <head>

  <LINK href="css/tree.css" href="css/tree.css" type=text/css rel=stylesheet>

  <LINK href="css/css.css" href="css/css.css" rel=stylesheet>

  <SCRIPT src="js/tree.js" src="js/tree.js" type=text/javascript></SCRIPT>

  <title>My JSP 'index.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" type="text/css" href="styles.css" href="styles.css">

  -->

  </head>

  <body onresize="return true;" leftMargin=1 topMargin=1>

  <table>

  <tr>

  <td valign="top">

  <TABLE class=table_left_menu cellSpacing=0 cellPadding=0 width="100%"

  background=images/tree_bg.gif border=0>

  <TBODY>

  <TR>

  <TD>

  <DIV align=center><IMG height=24 src="images/tree_button.gif" src="images/tree_button.gif"

  width=147 useMap=#Map border=0>

  <MAP id=Map name=Map>

  <AREA shape="RECT" shape="RECT" coords="16,3,69,15" coords="16,3,69,15" href="javascript:%20d.openAll()" href="javascript:%20d.openAll()">

  <AREA shape="RECT" shape="RECT" coords="72,3,131,15" coords="72,3,131,15" href="javascript:%20d.closeAll()" href="javascript:%20d.closeAll()">

  </MAP>

  </DIV>

  </TD>

  </TR>

  </TBODY>

  </TABLE>

  <SCRIPT type=text/javascript>

  d = new tree('d','../');

  <%

  TreeDAO treedao = new TreeDAO();

  Vector vec =treedao.getTree();

  Iterator iterator = vec.iterator();

  while(iterator.hasNext()){

  TreeNode treenode = (TreeNode)iterator.next();

  if(treenode.getIsleaf()==0){

  %>

  d.add(<%=treenode.getTid()%>,<%=treenode.getPid()%>,'<%=treenode.getTname()%>')

  <%}else{%>

  d.add(<%=treenode.getTid()%>,<%=treenode.getPid()%>,'<%=treenode.getTname()%>',parent.getUrlByCatalogId('<%=treenode.getTid()%>'),null,'list');

  <%}}%>

  document.write(d);

  </SCRIPT>

  </td>

  </tr>

  </table>

  </body>

  </html>

  第八步:创建一个框架页面,index.html代码如下,和list_default.htm。

  

复制代码 代码如下:

  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN">

  <!-- saved from url=(0203)http://211.142.31.211:8050/cms/content/content_frame.jsp?eafplaceholder=1&staffId=11010000&ssessionId=A5704FD79B3367C9FBE67681C048CA6A×tamp=1240457326218&secret=649820873&menuId=10081&labelStyle=DLS -->

  <HTML><HEAD><TITLE></TITLE>

  <META http-equiv=Content-Type content="text/html; charset=gb2312"><LINK href=""

  type=text/css rel=stylesheet>

  <SCRIPT type=text/javascript>

  function getUrlByCatalogId(catalogId) {

  return "TreeDemo/content_add.jsp?catalogId="+catalogId;

  }

  </SCRIPT>

  <META content="MSHTML 6.00.2900.3527" name=GENERATOR></HEAD><FRAMESET border=0

  frameSpacing=0 rows=* frameBorder=0>

  <FRAMESET border=0 frameSpacing=1 frameBorder=0 cols=200,*>

  <FRAME name=stree src="show_cat_tree.jsp" src="show_tree.jsp" scrolling=yes target="list">

  <FRAME name=list src="list_default.htm" src="list_default.htm"><NOFRAMES>

  <body>

  </body>

  </NOFRAMES></FRAMESET></FRAMESET></HTML>

  <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN">

  <!-- saved from url=(0203)http://211.142.31.211:8050/cms/content/content_frame.jsp?eafplaceholder=1&staffId=11010000&ssessionId=A5704FD79B3367C9FBE67681C048CA6A×tamp=1240457326218&secret=649820873&menuId=10081&labelStyle=DLS -->

  <HTML><HEAD><TITLE></TITLE>

  <META http-equiv=Content-Type content="text/html; charset=gb2312"><LINK href=""

  type=text/css rel=stylesheet>

  <SCRIPT type=text/javascript>

  function getUrlByCatalogId(catalogId) {

  return "TreeDemo/content_add.jsp?catalogId="+catalogId;

  }

  </SCRIPT>

  <META content="MSHTML 6.00.2900.3527" name=GENERATOR></HEAD><FRAMESET border=0

  frameSpacing=0 rows=* frameBorder=0>

  <FRAMESET border=0 frameSpacing=1 frameBorder=0 cols=200,*>

  <FRAME name=stree src="show_cat_tree.jsp" src="show_tree.jsp" scrolling=yes target="list">

  <FRAME name=list src="list_default.htm" src="list_default.htm"><NOFRAMES>

  <body>

  </body>

  </NOFRAMES></FRAMESET></FRAMESET></HTML>

  第九步:运行效果

  备注:如有需要源码的请直接联系QQ398349538。