asp获取远程网页的指定内容的实现代码

<% 
'用ASP获取远程目标网页指定内容，代码由广州网站建设//www.jb51.net提供 
On Error Resume Next 
Server.ScriptTimeOut=9999999 
Function getHTTPPage(Path) 
t = GetBody(Path) 
getHTTPPage=BytesToBstr(t,"GB2312") 
End function 
Function Newstring(wstr,strng) 
Newstring=Instr(lcase(wstr),lcase(strng)) 
if Newstring<=0 then Newstring=Len(wstr) 
End Function 
Function BytesToBstr(body,Cset) 
dim objstream 
set objstream = Server.CreateObject("adodb.stream") 
objstream.Type = 1 
objstream.Mode =3 
objstream.Open 
objstream.Write body 
objstream.Position = 0 
objstream.Type = 2 
objstream.Charset = Cset 
BytesToBstr = objstream.ReadText 
objstream.Close 
set objstream = nothing 
End Function 
Function GetBody(url) 
on error resume next 
Set Retrieval = CreateObject("Microsoft.XMLHTTP") 
With Retrieval 
.Open "Get", url, False, "", "" 
.Send 
GetBody = .ResponseBody 
End With 
Set Retrieval = Nothing 
End Function 

'ASP获取远程网页指定内容开始 
Dim wstr,str,url,start,over,dtime 
a="开始内容" 'ASP获取目标网页内容开始标记 
b="结束内容" 'ASP获取网页内容结束标记 
url="http://sc.jb51.net/" 
wstr=getHTTPPage(url) 
start=Newstring(wstr,a) 
over=Newstring(wstr,b) 
body=mid(wstr,start,over-start) 
response.write ""&body&"" '输出获取到的网页内容 
'ASP获取远程网页指定内容结束 
%> 

'ASP获取远程网页指定内容开始 
Dim wstr,str,url,start,over,dtime 
url="http://sc.jb51.net/" 
wstr=getHTTPPage(url) 
body=wstr

Dim wstr,str,url,start,over,dtime
url="/"
wstr=getHTTPPage(url)
filename="index.htm"
if wstr<>"" and request("action")="makeindex" then
body=wstr
Set fso = Server.CreateObject("Scripting.FileSystemObject")
Set fout = fso.CreateTextFile(server.mappath(""&filename&""))
fout.Write body
fout.close
set fout=nothing
set fso=nothing
If Err.number=0 then
response.write("<div class=""tishi"">首页生成成功！！</div>")
end if
end if