Asp 使用 Microsoft.XMLHTTP 抓取网页内容，并过滤需要的内容

Asp 使用 Microsoft.XMLHTTP 抓取网页内容无乱码处理，并过滤需要的内容

示例源码：

<%
 Dim xmlUrl,http,strHTML,strBody
 xmlUrl = Request.QueryString("u")

 REM 异步读取XML源
 Set http = server.CreateObject("Microsoft.XMLHTTP") 
 http.Open "POST",xmlUrl,false
 http.setrequestheader "User-Agent", "Mozilla/4.0"
 http.setrequestheader "Connection", "Keep-Alive"
 http.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
 http.Send()

 strHTML = BytesToBstr(http.ResponseBody)
 set http = nothing

 REM 抓取主要内容
 strBody = GetBody(strHTML,"<div id=""Div_newsContentc"" class=""cnt"">","</div>",0,0)
 strBody =Replace(strBody,"（本文首发于","")
 strBody =Replace(strBody,"财富动力网</a>，转载请注明出处。）","")
 strBody =Replace(strBody,"本文首发于，转载请注明出处。）","")
 strBody =Replace(strBody,"财富动力网</a>:http://www.927953.com","")
 strBody =Replace(strBody,"本文首发于","") 
  
 Response.Write RegRemoveHref(strBody)

REM 获取对应网址响应的HTML
Function BytesToBstr(body)
    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 = "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


REM 使用正则表达式，抓取之内标记的内容
Function GetBody(ConStr,StartStr,OverStr,IncluL,IncluR)
   If ConStr="$False$" or ConStr="" or IsNull(ConStr)=True Or StartStr="" or IsNull(StartStr)=True Or OverStr="" or IsNull(OverStr)=True Then
      GetBody="$False$"
      Exit Function
   End If
   Dim ConStrTemp
   Dim Start,Over
   ConStrTemp=Lcase(ConStr)
   StartStr=Lcase(StartStr)
   OverStr=Lcase(OverStr)
   Start = InStrB(1, ConStrTemp, StartStr, vbBinaryCompare)
   If Start<=0 then
      GetBody="$False$"
      Exit Function
   Else
      If IncluL=False Then
         Start=Start+LenB(StartStr)
      End If
   End If
   Over=InStrB(Start,ConStrTemp,OverStr,vbBinaryCompare)
   If Over<=0 Or Over<=Start then
      GetBody="$False$"
      Exit Function
   Else
      If IncluR=True Then
         Over=Over+LenB(OverStr)
      End If
   End If
   GetBody=MidB(ConStr,Start,Over-Start)
End Function

REM 过滤a超链接
Function RegRemoveHref(HTMLstr) 
    Set ra = New RegExp 
    ra.IgnoreCase = True 
    ra.Global = True 
    ra.Pattern = "<a[^>]+>(.+?)<\/a>"
     
    RegRemoveHref = Replace(ra.replace(HTMLstr,"$1"),"href=""http://www.927953.com""","") 
END Function
%>

原文：http://blog.csdn.net/yimiyuangguang/article/details/25759149