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ASP采集会用到的一些函数

<%

'==================================================
'函数 名:GetHttpPage
'作 用:获取网页源码
'参 数:HttpUrl ------网页地址

'==================================================
GetHttpPage(HttpUrl)
If IsNull(HttpUrl)=True Or Len(HttpUrl)<18 Or HttpUrl="$False$" Then
GetHttpPage="$False$"
Exit
End If
Dim Http
Set Http=server.createobject("MSXML2.XMLHTTP")
Http.open "GET",HttpUrl,False
Http.Send()
If Http.Readystate<>4 then
Set Http=Nothing
GetHttpPage="$False$"
Exit
End if
GetHTTPPage=bytesToBSTR(Http.responseBody,"GB2312")
Set Http=Nothing
If Err.number<>0 then
Err.Clear
End If
End

'==================================================
'函数 名:BytesToBstr
'作 用:将获取的源码转换为中文
'参 数:Body ------要转换的变量
'参 数:Cset ------要转换的类型

'==================================================
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

'==================================================
'函数 名:PostHttpPage
'作 用:登录
'==================================================
PostHttpPage(RefererUrl,PostUrl,PostData)
Dim xmlHttp
Dim RetStr
Set xmlHttp = CreateObject("Msxml2.XMLHTTP")
xmlHttp.Open "POST", PostUrl, False
XmlHTTP.setRequestHeader "Content-Length",Len(PostData)
xmlHttp.setRequestHeader "Content-Type", "application/x-www-form-urlencoded"
xmlHttp.setRequestHeader "Referer", RefererUrl
xmlHttp.Send PostData
If Err.Number <> 0 Then
Set xmlHttp=Nothing
PostHttpPage = "$False$"
Exit
End If
PostHttpPage=bytesToBSTR(xmlHttp.responseBody,"GB2312")
Set xmlHttp = nothing
End

'==================================================
'函数 名:UrlEncoding
'作 用:转换编码
'==================================================
UrlEncoding(DataStr)
Dim StrReturn,Si,ThisChr,InnerCode,Hight8,Low8
StrReturn = ""
For Si = 1 To Len(DataStr)
ThisChr = Mid(DataStr,Si,1)
If Abs(Asc(ThisChr)) < &HFF Then
StrReturn = StrReturn & ThisChr
Else
InnerCode = Asc(ThisChr)
If InnerCode < 0 Then
InnerCode = InnerCode + &H10000
End If
Hight8 = (InnerCode And &HFF00)\ &HFF
Low8 = InnerCode And &HFF
StrReturn = StrReturn & "%" & Hex(Hight8) & "%" & Hex(Low8)
End If
Next
UrlEncoding = StrReturn
End

'==================================================
'函数名:GetBody
' 作 用:截取字符串
'参 数:ConStr ------将要截取的字符串
'参 数:StartStr ------开始字符串
' 参 数:OverStr ------结束字符串
'参 数:IncluL ------是否包含StartStr
'参 数:IncluR ------是否包含OverStr

'==================================================
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
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
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
Else
If IncluR=True Then
Over=Over+LenB(OverStr)
End If
End If
GetBody=MidB(ConStr,Start,Over-Start)
End

%>

天气小偷范本

<%
On Error Resume Next
Server.TimeOut=9999999
getHTTPPage(Path)
t = GetBody(Path)
getHTTPPage=BytesToBstr(t,"GB2312")
End

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

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
Newstring(wstr,strng)
Newstring=Instr(lcase(wstr),lcase(strng))
if Newstring<=0 then Newstring=Len(wstr)
End
%>

<%
Dim wstr,str,url,start,over,city
city = Request.QueryString("id")
url="http://appnews.qq.com/cgi-bin/news_qq_search?city="&city&""
wstr=getHTTPPage(url)
start=Newstring(wstr,"<html>")
over=Newstring(wstr,"</HTML>")
body=mid(wstr,start,over-start)

body = replace(body,"skin1","天气预报 - 斯克网络")
body = replace(body,"http://appnews.qq.com/cgi-bin/news_qq_search?city","tianqi.asp?id")


response.write body
%>

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