ajax+asp无限级分类树型结构(带数据库)

%
'数据库字段为类属性，添加、删除、修改、操作检查等函数为类的方法
Class Cls_Leibie
Private nClassID,sClassName,nParentID,sParentPath,nDepth,nRootID,nChild,nOrderID,sFilePath '定义私有变量（类的属性，即数据库字段对应的变量）
Private rs,sql,ErrorStr
Private Sub Class_Initialize()
ErrorStr="" '初始化错误信息为空
End Sub
Private Sub Class_Terminate() '销毁类时关闭数据库连接
If IsObject(Conn) Then
Conn.Close
Set Conn = Nothing
End If
End Sub
'*******************设置各个属性******************************************************
Public Property Let ClassID(str) '获取类别ID（主键）
nClassID=str
call ClassProperty() '获取类别ID时调用此函数读出类的所有属性
End Property
Public Property Let ClassName(str) '获取类别名称
sClassName=str
End Property
Public Property Get ClassName
ClassName=sClassName
End Property
Public Property Let ParentID(str) '获取类别父ID
nParentID=str
End Property
Public Property Get ParentID
ParentID=nParentID
End Property
Public Property Let ParentPath(str) '获取父路径ID
sParentPath=str
End Property
Public Property Get ParentPath
ParentPath=sParentPath
End Property
Public Property Let Depth(str) '获取类别深度
nDepth=str
End Property
Public Property Get Depth
Depth=nDepth
End Property
Public Property Let RootID(str) '获取类别根ID
nRootID=str
End Property
Public Property Get RootID
RootID=nRootID
End Property
Public Property Let Child(str) '子类别个数
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) '类别文件根目录（生成静态文件路径，小站老杨Web技术博客用的是生成静态，故设置此字段）
sFilePath=str
End Property
Public Property Get FilePath
FilePath=sFilePath
End Property
'******************************************************************************
Private Sub ClassProperty() '读取类的所有属性
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() '类别添加检查函数，结果为0表示通过检查，为1表示有错误发生，有错误发生时退出函数，将错误信息写入错误变量ErrorStr
dim temprs
FAddCheck=0
if sClassName="" then '类名为空
FAddCheck=1
ErrorStr="类名不能为空！"
exit Function
else
if nParentID="" then '父id为空
FAddCheck=1
ErrorStr="父id不能为空！"
exit Function
else
if nParentID>0 then
set temprs=conn.execute("select ClassID From ArticleClass where ClassID=" nParentID) '父类别不存在
if temprs.eof then
FAddCheck=1
ErrorStr="所属类别不存在或已经被删除！"
exit Function
else
sql="select ClassID from ArticleClass where ClassName='" sClassName "' and ParentID=" nParentID '类名重复
set rs=conn.execute(sql)
if not rs.eof then
FAddCheck=1
ErrorStr="类名重复！"
exit Function
end if
set rs=nothing
end if
set temprs=nothing
else
sql="select ClassID from ArticleClass where ClassName='" sClassName "' and ParentID=" nParentID '类名重复
set rs=conn.execute(sql)
if not rs.eof then
FAddCheck=1
ErrorStr="类名重复！"
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") '查找当前数据库中最大的类别id，如果没有数据则设置为0，要插入的类别id为当前最大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") '查找当前数据库中最大的根id，如果没有数据则设置为0，要插入的根id为当前最大根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) '查找父类别相应信息
if not rs.eof then
nRootID=trim(rs("Rootid")) '根id与父类别根id相同
sParentPath=trim(rs("ParentPath")) "," nParentID
if cint(trim(nParentID))>0 then '父id大于0则有父类别，故要插入的类别的深度父类别的深度加1，父id不大于0则当前要插入的类别为根类别，则深度为0
nDepth=cint(trim(rs("Depth")))+1
else
nDepth=0
end if
if cint(trim(rs("Child")))>0 then
dim rsPrevOrderID
'得到与本栏目同级的最后一个栏目的OrderID
set rsPrevOrderID=conn.execute("select Max(OrderID) From ArticleClass where ParentID=" ParentID)
prevOrderID=rsPrevOrderID(0)
'得到同一父栏目但比本栏目级数大的子栏目的最大OrderID，如果比前一个值大，则改用这个值。
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
'更新其父类的子栏目数
conn.execute("update ArticleClass set child=child+1 where ClassID=" nParentID)
'更新该栏目排序以及大于本需要和同在本分类下的栏目排序序号
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() '类别修改检查函数，结果为0表示通过检查，为1表示有错误发生，有错误发生时退出函数，将错误信息写入错误变量ErrorStr
dim temprs
FEditCheck=0
if nClassID="" then '类别id为空
FEditCheck=1
ErrorStr="类别id不能为空！"
exit Function
else
if sClassName="" then '类名为空
FEditCheck=1
ErrorStr="类名不能为空！"
exit Function
else
if nParentID>0 then
set temprs=conn.execute("select ClassID From ArticleClass where ClassID=" nParentID) '父类别不存在
if temprs.eof then
FAddCheck=1
ErrorStr="所属类别不存在或已经被删除！"
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 '类名重复
FEditCheck=1
ErrorStr="类名重复！"
exit Function
end if
set rs=nothing
end if
set temprs=nothing
end if
end if
end if
End Function
Public Sub SEdit() '类别修改
sql="update ArticleClass set ClassName='" sClassName "',FilePath='" sFilePath "' where ClassID=" nClassID
conn.execute(sql)
End Sub
Public Function FDeleteCheck() '类别删除检查函数，结果为0表示通过检查，为1表示有错误发生，有错误发生时退出函数，将错误信息写入错误变量ErrorStr
FDeleteCheck=0 '这里删除没有写级联删除文章部分的代码，删除时应该级联删除
if nClassID="" then
FDeleteCheck=1
ErrorStr="要删除的类别id不能为空！"
exit Function
else
set rs=conn.execute("select Child from ArticleClass where ClassID=" nClassID)
if rs.bof and rs.eof then
FDeleteCheck=1
ErrorStr="类别不存在或者已经被删除！"
exit Function
else
if trim(rs("Child"))>0 then
FDeleteCheck=1
ErrorStr="该类别含有子类别，请删除其子类别后再进行删除本类别的操作！"
exit Function
end if
end if
end if
End Function
Public Sub SDelete()
if nDepth>0 then '修改父id孩子数
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"%>
%
'作者站点：www.guaishi.org
'邮箱：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; //定义一个全局变量
var currentID=1;//设置当前选中ID，如果此ID不存在则会发生js错误
//类别显示主函数
//cid--子类别所在层id
//id --类别id
//pid--[+]和[-]图标id
//fid--类别图标id
function DivDisplay(cid,id,pid,fid)
{
if (GetId(cid).style.display=='') //子类别不显示时图标显示控制
{
GetId(cid).style.display='none';
GetId(pid).src = 'images/closed.gif';
GetId(fid).src = 'images/folder.gif';
}
else //展开子类别时的操作
{
GetId(cid).style.display='';
GetId(pid).src = 'images/opened.gif';
GetId(fid).src = 'images/folderopen.gif';
if (GetId(cid).innerHTML==''||GetId(cid).innerHTML=='正在提交数据...')
{
GetId(cid).innerHTML='';
ShowChild(cid,id); //调用显示子类别函数
}
}
}
//与上一个函数作用相同，只作用在最后一个类别
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=='正在提交数据...')
{
GetId(cid).innerHTML='';
ShowChild(cid,id);
}
}
}
//类别添加函数
//id--类别id
function ClassAdd(id){
if (GetId("p"+id).src.indexOf("last")>0){ //最后一个类别时的添加操作
if (!GetId("p"+id).onclick){
GetId("p"+id).onclick=function (){DivDisplay2("c"+id,id,"p"+id,"f"+id);}; //为[+]和[-]添加单击事件
GetId("s"+id).ondblclick=function (){DivDisplay2("c"+id,id,"p"+id,"f"+id);}; //为显示类别文字的span添加双击事件
GetId("p"+id).src = 'images/lastopen.gif';
}
}
else{
if (!GetId("p"+id).onclick){ //不为最后一个类别的添加操作
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);
}
//类别修改函数
function ClassEdit(id,classname){
GetId("s"+id).innerHTML=classname;
}
//有多个子类别的类别的删除函数
function ClassDel(id){
ShowChild("c"+id,id);
CurrentSelect(currentID,id)
BrowseRight(id);
}
//只有一个子类别的类别的删除函数
function ClassDel1(id){
if (GetId("p"+id).src.indexOf("last")>0){ //当类别是当前类别的最后一个类别时
GetId("p"+id).style.cursor="cursor"; //设置图标的鼠标经过样式
GetId("p"+id).onclick=function (){}; //因为只有一个子类别删除后就不再有子类别，故将图标单击事件修改为空函数
GetId("s"+id).ondblclick=function (){}; //同上
GetId("p"+id).src = 'images/lastnochild.gif'; //图标设置
}
else{
GetId("p"+id).style.cursor="cursor"; //非最后一个类别的删除操作
GetId("p"+id).onclick=function (){};
GetId("s"+id).ondblclick=function (){};
GetId("p"+id).src = 'images/nofollow2.gif'; //这里的图标设置与前面不一样
}
ShowChild("c"+id,id);
CurrentSelect(currentID,id);
BrowseRight(id);
}
//向右边框架传递参数
function BrowseRight(id){
CurrentSelect(currentID,id);
top.ContentFrame.location="../ArticleMain.asp?ClassID="+ id;
}
//设置类别选中状态的函数
function CurrentSelect(oldid,newid){
currentID=newid;
document.getElementById("s"+oldid).style.backgroundColor="white";
document.getElementById("s"+currentID).style.backgroundColor="#C0C0E9";
}
//创建XMLHttpRequest对象
function CreateXMLHttpRequest()
{
if (window.ActiveXObject)
{
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
xmlHttp = new XMLHttpRequest();
}
}
//Ajax处理函数
//id,层id
//rid,数据在表中的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='出错：'+xmlHttp.statusText;
}
}
else
{
GetId(cid).innerHTML="正在提交数据...";
}
}
}
else
{
GetId(cid).innerHTML='抱歉，您的浏览器不支持XMLHttpRequest，请使用IE6以上版本！';
}
}
//取得页面对象
//id,层id
function GetId(id)
{
return document.getElementById(id);
}
/script>
/head>
body>
!--#include file="../conn.asp"-->
%
'显示根目录
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>