无限级分类(ASP) (转)[@more@]

比较简单的一个页面,类似csdn论坛在ns下的左边列表

描述:

1.

数据名:tree.mdb

表名:tree

表结构:id(自编) pid(数字) content(文本) link(文本)

2.

图片:endnode.gif collapsed.gif back.gif(均在img目录下,可自行修改)

3.

代码:

microsoft FrontPage 4.0">
无限级列表

<%
newid=Request.QueryString("id")
if newid="" or CInt(newid)<0 then newid=0
if isNumeric(newid) then
listTree(CInt(newid))
end if

function listTree(id)
dim rs
dim imgFolder,imgFile
dim link,href,parentHref
dim target,ahref,click
target="main" '所指定的框架名
imgFolder="img/" '默认路径
set rs=conn.execute("select *,(select count(*) from tree where pid = T.id) as children,(select pid from tree where id="&id&") as parent from tree T where pid="&id)
if not rs.eof then
parentHref=Request.ServerVariables("URL")&"?id="&rs("parent")
if id<>0 then Response.Write "

上一级目录

"&VbCrLf
do while not rs.eof
if rs("children")>0 then
img=imgFolder+"collapsed.gif"
href=Request.ServerVariables("URL")&"?id="&rs("id")
click="onclick=""location.href='"&href&"'"""
else
img=imgFolder+"endnode.gif"
href="Javascript:void(0)"
end if
if not isNull(rs("link")) then
ahref=rs("link")
else
ahref="Javascript:void(0)"
target="_self"
end if
link=""&rs("content")&""
Response.Write "

"&link&"

"
rs.movenext
loop
rs.close:set rs=nothing
end if
end function
conn.close:set conn=nothing
%>

conn.inc:

<%
dim conn
set conn = Server.Createobject("ADODB.Connection")
conn.Open "Provider=Microsoft.Jet.OLEDB.4.0;Data source=" & Server.mappath("tree.mdb") & ";Persist Security Info=False"
%>

4.测试:IE6,ns7,Mozilla下测试通过

原理比较简单,有错请大家指正,谢谢

ITPub博客

无限级分类(ASP) (转)

最新文章