asp下利用xmlhttp获取网页内容的方法这个方法一般比较通用的，然后通过字符截取网页的内容。
复制代码代码如下:url=http://www.csdn.net/
wstr=getHTTPPage(url)
start=Newstring(wstr,资源精选<!-- 下载 -->)
over=Newstring(wstr,<div class=friendlink>)
body=mid(wstr,200,500)
response.write body
Function getHTTPPage(url)
dim objXML
set objXML=createobject(MSXML2.XMLHTTP)'定义
objXML.open GET,url,false'打开
objXML.send()'发送
If objXML.readystate<>4 then '判断文档是否已经解析完，以做客户端接受返回消息
exit function
End If
getHTTPPage=bBytesToBstr(objXML.responseBody)'返回信息，同时用函数定义编码
set objXML=nothing'关闭
if err.number<>0 then err.Clear
End Function
Function Newstring(wstr,strng)
Newstring=Instr(lcase(wstr),lcase(strng))
if Newstring<=0 then Newstring=Len(wstr)
End Function
Function bBytesToBstr(body)
dim objstream
set objstream = CreateObject(adodb.stream)
objstream.Type = 1
objstream.Mode =3
objstream.Open
objstream.Write body
objstream.Position = 0
objstream.Type = 2
objstream.Charset = gb2312
'转换原来默认的UTF-8编码转换成GB2312编码，否则直接用XMLHTTP调用有中文字符的网页得到的将是乱码
bBytesToBstr = objstream.ReadText
objstream.Close
set objstream = nothing
end Function
Function BytesToBstr(body)
dim objstream
set objstream = CreateObject(adodb.stream)
objstream.Type = 1
objstream.Mode =3
objstream.Open
objstream.Write body
objstream.Position = 0
objstream.Type = 2
objstream.Charset = utf-8
'转换原来默认的UTF-8编码转换成GB2312编码，否则直接用XMLHTTP调用有中文字符的网页得到的将是乱码
BytesToBstr = objstream.ReadText
objstream.Close
set objstream = nothing
end Function