ajax+asp無限級分類樹型結(jié)構(gòu)(帶數(shù)據(jù)庫)

%
'數(shù)據(jù)庫字段為類屬性，添加、刪除、修改、操作檢查等函數(shù)為類的方法
Class Cls_Leibie
Private nClassID,sClassName,nParentID,sParentPath,nDepth,nRootID,nChild,nOrderID,sFilePath '定義私有變量（類的屬性，即數(shù)據(jù)庫字段對應(yīng)的變量）
Private rs,sql,ErrorStr
Private Sub Class_Initialize()
ErrorStr="" '初始化錯誤信息為空
End Sub
Private Sub Class_Terminate() '銷毀類時關(guān)閉數(shù)據(jù)庫連接
If IsObject(Conn) Then
Conn.Close
Set Conn = Nothing
End If
End Sub
'*******************設(shè)置各個屬性******************************************************
Public Property Let ClassID(str) '獲取類別ID（主鍵）
nClassID=str
call ClassProperty() '獲取類別ID時調(diào)用此函數(shù)讀出類的所有屬性
End Property
Public Property Let ClassName(str) '獲取類別名稱
sClassName=str
End Property
Public Property Get ClassName
ClassName=sClassName
End Property
Public Property Let ParentID(str) '獲取類別父ID
nParentID=str
End Property
Public Property Get ParentID
ParentID=nParentID
End Property
Public Property Let ParentPath(str) '獲取父路徑ID
sParentPath=str
End Property
Public Property Get ParentPath
ParentPath=sParentPath
End Property
Public Property Let Depth(str) '獲取類別深度
nDepth=str
End Property
Public Property Get Depth
Depth=nDepth
End Property
Public Property Let RootID(str) '獲取類別根ID
nRootID=str
End Property
Public Property Get RootID
RootID=nRootID
End Property
Public Property Let Child(str) '子類別個數(shù)
nChild=str
End Property
Public Property Get Child
Child=nChild
End Property
Public Property Let OrderID(str) '排序ID
nOrderID=str
End Property
Public Property Get OrderID
OrderID=nOrderID
End Property
Public Property Let FilePath(str) '類別文件根目錄（生成靜態(tài)文件路徑，小站老楊Web技術(shù)博客用的是生成靜態(tài)，故設(shè)置此字段）
sFilePath=str
End Property
Public Property Get FilePath
FilePath=sFilePath
End Property
'******************************************************************************
Private Sub ClassProperty() '讀取類的所有屬性
sql="select * from ArticleClass where ClassID=" nClassID
set rs=conn.execute(sql)
if not rs.eof then
sClassName=trim(rs("ClassName"))
nParentID=trim(rs("ParentID"))
sParentPath=trim(rs("ParentPath"))
nDepth=trim(rs("Depth"))
nRootID=trim(rs("RootID"))
nChild=trim(rs("Child"))
nOrderID=trim(rs("OrderID"))
sFilePath=trim(rs("FilePath"))
end if
set rs=nothing
End Sub
Public Function FAddCheck() '類別添加檢查函數(shù)，結(jié)果為0表示通過檢查，為1表示有錯誤發(fā)生，有錯誤發(fā)生時退出函數(shù)，將錯誤信息寫入錯誤變量ErrorStr
dim temprs
FAddCheck=0
if sClassName="" then '類名為空
FAddCheck=1
ErrorStr="類名不能為空！"
exit Function
else
if nParentID="" then '父id為空
FAddCheck=1
ErrorStr="父id不能為空！"
exit Function
else
if nParentID>0 then
set temprs=conn.execute("select ClassID From ArticleClass where ClassID=" nParentID) '父類別不存在
if temprs.eof then
FAddCheck=1
ErrorStr="所屬類別不存在或已經(jīng)被刪除！"
exit Function
else
sql="select ClassID from ArticleClass where ClassName='" sClassName "' and ParentID=" nParentID '類名重復(fù)
set rs=conn.execute(sql)
if not rs.eof then
FAddCheck=1
ErrorStr="類名重復(fù)！"
exit Function
end if
set rs=nothing
end if
set temprs=nothing
else
sql="select ClassID from ArticleClass where ClassName='" sClassName "' and ParentID=" nParentID '類名重復(fù)
set rs=conn.execute(sql)
if not rs.eof then
FAddCheck=1
ErrorStr="類名重復(fù)！"
exit Function
end if
set rs=nothing
end if
end if
end if
End Function
Public Sub SAdd()
dim maxClassID,maxRootID
set rs = conn.execute("select Max(ClassID) from ArticleClass") '查找當(dāng)前數(shù)據(jù)庫中最大的類別id，如果沒有數(shù)據(jù)則設(shè)置為0，要插入的類別id為當(dāng)前最大id加1
maxClassID=rs(0)
if isnull(maxClassID) then
maxClassID=0
end if
set rs=nothing
nClassID=maxClassID+1
set rs=conn.execute("select max(rootid) From ArticleClass") '查找當(dāng)前數(shù)據(jù)庫中最大的根id，如果沒有數(shù)據(jù)則設(shè)置為0，要插入的根id為當(dāng)前最大根id加1
maxRootID=rs(0)
if isnull(maxRootID) then
maxRootID=0
end if
nRootID=maxRootID+1
set rs=conn.execute("select RootID,Depth,ParentPath,Child,OrderID From ArticleClass where ClassID=" nParentID) '查找父類別相應(yīng)信息
if not rs.eof then
nRootID=trim(rs("Rootid")) '根id與父類別根id相同
sParentPath=trim(rs("ParentPath")) "," nParentID
if cint(trim(nParentID))>0 then '父id大于0則有父類別，故要插入的類別的深度父類別的深度加1，父id不大于0則當(dāng)前要插入的類別為根類別，則深度為0
nDepth=cint(trim(rs("Depth")))+1
else
nDepth=0
end if
if cint(trim(rs("Child")))>0 then
dim rsPrevOrderID
'得到與本欄目同級的最后一個欄目的OrderID
set rsPrevOrderID=conn.execute("select Max(OrderID) From ArticleClass where ParentID=" ParentID)
prevOrderID=rsPrevOrderID(0)
'得到同一父欄目但比本欄目級數(shù)大的子欄目的最大OrderID，如果比前一個值大，則改用這個值。
set rsPrevOrderID=conn.execute("select Max(OrderID) From ArticleClass where ParentPath like '" ParentPath ",%'")
if (not(rsPrevOrderID.bof and rsPrevOrderID.eof)) then
if not IsNull(rsPrevOrderID(0)) then
if rsPrevOrderID(0)>prevOrderID then
prevOrderID=rsPrevOrderID(0)
end if
end if
end if
set rsPrevOrderID=nothing
end if
nOrderID=prevOrderID+1
else
nOrderID=0
sParentPath="0"
nDepth=0
end if
set rs=nothing
nChild=0
sql="insert into ArticleClass (ClassID,ClassName,ParentID,ParentPath,Depth,RootID,Child,OrderID,FilePath) values (" nClassID ",'" sClassName "'," nParentID ",'" sParentPath "'," nDepth "," nRootID "," nChild "," nOrderID ",'" sFilePath "')"
conn.execute(sql)
if ParentID>0 then
'更新其父類的子欄目數(shù)
conn.execute("update ArticleClass set child=child+1 where ClassID=" nParentID)
'更新該欄目排序以及大于本需要和同在本分類下的欄目排序序號
if prevOrderID>"" then
conn.execute("update ArticleClass set OrderID=OrderID+1 where rootid=" nRootid " and OrderID>" prevOrderID " and ClassID>" nClassID)
end if
end if
End Sub
Public Function FEditCheck() '類別修改檢查函數(shù)，結(jié)果為0表示通過檢查，為1表示有錯誤發(fā)生，有錯誤發(fā)生時退出函數(shù)，將錯誤信息寫入錯誤變量ErrorStr
dim temprs
FEditCheck=0
if nClassID="" then '類別id為空
FEditCheck=1
ErrorStr="類別id不能為空！"
exit Function
else
if sClassName="" then '類名為空
FEditCheck=1
ErrorStr="類名不能為空！"
exit Function
else
if nParentID>0 then
set temprs=conn.execute("select ClassID From ArticleClass where ClassID=" nParentID) '父類別不存在
if temprs.eof then
FAddCheck=1
ErrorStr="所屬類別不存在或已經(jīng)被刪除！"
exit Function
else
set rs=conn.execute("select ClassID from ArticleClass where ClassName='" sClassName "' and ClassID>" nClassID "and ParentID=" nParentID)
if not rs.eof then '類名重復(fù)
FEditCheck=1
ErrorStr="類名重復(fù)！"
exit Function
end if
set rs=nothing
end if
set temprs=nothing
end if
end if
end if
End Function
Public Sub SEdit() '類別修改
sql="update ArticleClass set ClassName='" sClassName "',FilePath='" sFilePath "' where ClassID=" nClassID
conn.execute(sql)
End Sub
Public Function FDeleteCheck() '類別刪除檢查函數(shù)，結(jié)果為0表示通過檢查，為1表示有錯誤發(fā)生，有錯誤發(fā)生時退出函數(shù)，將錯誤信息寫入錯誤變量ErrorStr
FDeleteCheck=0 '這里刪除沒有寫級聯(lián)刪除文章部分的代碼，刪除時應(yīng)該級聯(lián)刪除
if nClassID="" then
FDeleteCheck=1
ErrorStr="要刪除的類別id不能為空！"
exit Function
else
set rs=conn.execute("select Child from ArticleClass where ClassID=" nClassID)
if rs.bof and rs.eof then
FDeleteCheck=1
ErrorStr="類別不存在或者已經(jīng)被刪除！"
exit Function
else
if trim(rs("Child"))>0 then
FDeleteCheck=1
ErrorStr="該類別含有子類別，請刪除其子類別后再進行刪除本類別的操作！"
exit Function
end if
end if
end if
End Function
Public Sub SDelete()
if nDepth>0 then '修改父id孩子數(shù)
conn.execute("update ArticleClass set child=child-1 where child>0 and ClassID=" nParentID)
end if
sql="delete from ArticleClass where ClassID=" nClassID
conn.execute(sql)
End Sub
Public Function FErrStr()
FErrStr=ErrorStr
End Function
End Class
%>
index.asp
%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
%
'作者站點：www.guaishi.org
'郵箱：guaishiorg@126.com
'QQ:514777880
Session.CodePage=65001
Response.Charset = "utf-8"
%>
!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
title>/title>
style type="text/css">
body{margin:0;padding:0;font-size:12px; background-color:#FFFFFF;}
ul{ list-style-type:none; margin:0 0 0 20px; padding:0;}
li{ white-space:nowrap; padding:0;}
.childdiv{ background:url(images/dot.gif);background-repeat:repeat-y;}
span { cursor:pointer;}
/style>
script type="text/javascript">
var xmlHttp; //定義一個全局變量
var currentID=1;//設(shè)置當(dāng)前選中ID，如果此ID不存在則會發(fā)生js錯誤
//類別顯示主函數(shù)
//cid--子類別所在層id
//id --類別id
//pid--[+]和[-]圖標(biāo)id
//fid--類別圖標(biāo)id
function DivDisplay(cid,id,pid,fid)
{
if (GetId(cid).style.display=='') //子類別不顯示時圖標(biāo)顯示控制
{
GetId(cid).style.display='none';
GetId(pid).src = 'images/closed.gif';
GetId(fid).src = 'images/folder.gif';
}
else //展開子類別時的操作
{
GetId(cid).style.display='';
GetId(pid).src = 'images/opened.gif';
GetId(fid).src = 'images/folderopen.gif';
if (GetId(cid).innerHTML==''||GetId(cid).innerHTML=='正在提交數(shù)據(jù)...')
{
GetId(cid).innerHTML='';
ShowChild(cid,id); //調(diào)用顯示子類別函數(shù)
}
}
}
//與上一個函數(shù)作用相同，只作用在最后一個類別
function DivDisplay2(cid,id,pid,fid)
{
if (GetId(cid).style.display=='')
{
GetId(cid).style.display='none';
GetId(pid).src = 'images/lastclosed.gif';
GetId(fid).src = 'images/folder.gif';
}
else
{
GetId(cid).style.display='';
GetId(pid).src = 'images/lastopen.gif';
GetId(fid).src = 'images/folderopen.gif';
if (GetId(cid).innerHTML==''||GetId(cid).innerHTML=='正在提交數(shù)據(jù)...')
{
GetId(cid).innerHTML='';
ShowChild(cid,id);
}
}
}
//類別添加函數(shù)
//id--類別id
function ClassAdd(id){
if (GetId("p"+id).src.indexOf("last")>0){ //最后一個類別時的添加操作
if (!GetId("p"+id).onclick){
GetId("p"+id).onclick=function (){DivDisplay2("c"+id,id,"p"+id,"f"+id);}; //為[+]和[-]添加單擊事件
GetId("s"+id).ondblclick=function (){DivDisplay2("c"+id,id,"p"+id,"f"+id);}; //為顯示類別文字的span添加雙擊事件
GetId("p"+id).src = 'images/lastopen.gif';
}
}
else{
if (!GetId("p"+id).onclick){ //不為最后一個類別的添加操作
GetId("p"+id).onclick=function (){DivDisplay("c"+id,id,"p"+id,"f"+id);};
GetId("s"+id).ondblclick=function (){DivDisplay("c"+id,id,"p"+id,"f"+id);};
GetId("p"+id).src = 'images/opened.gif';
}
}
GetId("c"+id).style.display='';
ShowChild("c"+id,id);
}
//類別修改函數(shù)
function ClassEdit(id,classname){
GetId("s"+id).innerHTML=classname;
}
//有多個子類別的類別的刪除函數(shù)
function ClassDel(id){
ShowChild("c"+id,id);
CurrentSelect(currentID,id)
BrowseRight(id);
}
//只有一個子類別的類別的刪除函數(shù)
function ClassDel1(id){
if (GetId("p"+id).src.indexOf("last")>0){ //當(dāng)類別是當(dāng)前類別的最后一個類別時
GetId("p"+id).style.cursor="cursor"; //設(shè)置圖標(biāo)的鼠標(biāo)經(jīng)過樣式
GetId("p"+id).onclick=function (){}; //因為只有一個子類別刪除后就不再有子類別，故將圖標(biāo)單擊事件修改為空函數(shù)
GetId("s"+id).ondblclick=function (){}; //同上
GetId("p"+id).src = 'images/lastnochild.gif'; //圖標(biāo)設(shè)置
}
else{
GetId("p"+id).style.cursor="cursor"; //非最后一個類別的刪除操作
GetId("p"+id).onclick=function (){};
GetId("s"+id).ondblclick=function (){};
GetId("p"+id).src = 'images/nofollow2.gif'; //這里的圖標(biāo)設(shè)置與前面不一樣
}
ShowChild("c"+id,id);
CurrentSelect(currentID,id);
BrowseRight(id);
}
//向右邊框架傳遞參數(shù)
function BrowseRight(id){
CurrentSelect(currentID,id);
top.ContentFrame.location="../ArticleMain.asp?ClassID="+ id;
}
//設(shè)置類別選中狀態(tài)的函數(shù)
function CurrentSelect(oldid,newid){
currentID=newid;
document.getElementById("s"+oldid).style.backgroundColor="white";
document.getElementById("s"+currentID).style.backgroundColor="#C0C0E9";
}
//創(chuàng)建XMLHttpRequest對象
function CreateXMLHttpRequest()
{
if (window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
xmlHttp = new XMLHttpRequest();
}
}
//Ajax處理函數(shù)
//id,層id
//rid,數(shù)據(jù)在表中的id
function ShowChild(cid,id)
{
CreateXMLHttpRequest();
if(xmlHttp)
{
xmlHttp.open('POST','child.asp',true);
xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
var SendData = 'id='+id;
xmlHttp.send(SendData);
xmlHttp.onreadystatechange=function()
{
if(xmlHttp.readyState==4)
{
if(xmlHttp.status==200)
{
GetId(cid).innerHTML = xmlHttp.responseText;
}
else
{
GetId(cid).innerHTML='出錯：'+xmlHttp.statusText;
}
}
else
{
GetId(cid).innerHTML="正在提交數(shù)據(jù)...";
}
}
}
else
{
GetId(cid).innerHTML='抱歉，您的瀏覽器不支持XMLHttpRequest，請使用IE6以上版本！';
}
}
//取得頁面對象
//id,層id
function GetId(id)
{
return document.getElementById(id);
}
/script>
/head>
body>
!--#include file="../conn.asp"-->
%
'顯示根目錄
sql="select *,(select top 1 ClassID from ArticleClass where Depth=0 order by ClassID desc) as lastid from ArticleClass where Depth=0 order by ClassID"
set rs=conn.execute(sql)
if not rs.eof then
response.Write "ul>"vbcr
do while not rs.eof
if cint(trim(rs("ClassID")))=cint(trim(rs("lastid"))) then
if rs("Child")>0 then
response.Write "li>img id='p"rs("ClassID")"' src=""images/lastclosed.gif"" onclick=""DivDisplay2('c"rs("ClassID")"','"rs("ClassID")"','p"rs("ClassID")"','f" rs("ClassID") "')"" style=""cursor : hand;"" align=""absmiddle"">"
response.Write "img src=""images/folder.gif"" align=""absmiddle"" id='f" rs("ClassID") "' /> span id='s" trim(rs("ClassID")) "' onclick=""BrowseRight(" trim(rs("ClassID")) ")"" ondblclick=""DivDisplay2('c"rs("ClassID")"','"rs("ClassID")"','p"rs("ClassID")"','f" rs("ClassID") "')"">" rs("ClassName") "/span>"
else
response.Write "li>img id='p" rs("ClassID") "' src=""images/lastnochild.gif"" align=""absmiddle"" />"
response.Write "img src=""images/folder.gif"" align=""absmiddle"" id='f" rs("ClassID") "' /> span id='s" trim(rs("ClassID")) "' onclick=""BrowseRight(" trim(rs("ClassID")) ")"">" rs("ClassName") "/span>"
end if
else
if rs("Child")>0 then
response.Write "li>img id='p"rs("ClassID")"' src=""images/closed.gif"" onclick=""DivDisplay('c"rs("ClassID")"','"rs("ClassID")"','p"rs("ClassID")"','f" rs("ClassID") "')"" style=""cursor : hand;"" align=""absmiddle"">"
response.Write "img src=""images/folder.gif"" align=""absmiddle"" id='f" rs("ClassID") "' /> span id='s" trim(rs("ClassID")) "' onclick=""BrowseRight(" trim(rs("ClassID")) ")"" ondblclick=""DivDisplay('c"rs("ClassID")"','"rs("ClassID")"','p"rs("ClassID")"','f" rs("ClassID") "')"">" rs("ClassName") "/span>"
else
response.Write "li>img id='p" rs("ClassID") "' src=""images/nofollow2.gif"" align=""absmiddle"" />"
response.Write "img src=""images/folder.gif"" align=""absmiddle"" id='f" rs("ClassID") "' /> span id='s" trim(rs("ClassID")) "' onclick=""BrowseRight(" trim(rs("ClassID")) ")"">" rs("ClassName") "/span>"
end if
end if
if cint(trim(rs("ClassID")))=cint(trim(rs("lastid"))) then
response.Write "div id='c"rs("ClassID")"' style='display:none;'>/div>"
else
response.Write "div id='c"rs("ClassID")"' style='display:none;' class=""childdiv"">/div>"
end if
response.Write "/li>"vbcr
rs.movenext
loop
response.Write "/ul>"vbcr
end if
rs.close
set rs=nothing
conn.close
Set conn = Nothing
%>
/body>
/html>