获取网页相关（来自网上）

'==================================================
'函数名：GetHttpPage
'作  用：获取网页源码
'参  数：HttpUrl ------网页地址
'==================================================
Function GetHttpPage(HttpUrl)
   If IsNull(HttpUrl)=True Or Len(HttpUrl)<18 Or HttpUrl="$False$" Then
      GetHttpPage="$False$"
      Exit Function
   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 function
   End if
   GetHTTPPage=bytesToBSTR(Http.responseBody,"GB2312")
   Set Http=Nothing
   If Err.number<>0 then
      Err.Clear
   End If
End Function

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

'==================================================
'函数名：UrlEncoding
'作  用：转换编码
'==================================================
Function 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 Function

'==================================================
'过程名：SaveRemoteFile
'作  用：保存远程的文件到本地
'参  数：LocalFileName ------ 本地文件名
'参  数：RemoteFileUrl ------ 远程文件URL
'==================================================
Function SaveRemoteFile(LocalFileName,RemoteFileUrl)
    SaveRemoteFile=True
dim Ads,Retrieval,GetRemoteData
Set Retrieval = Server.CreateObject("Microsoft.XMLHTTP")
With Retrieval
.Open "Get", RemoteFileUrl, False, "", ""
.Send
        If .Readystate<>4 then
            SaveRemoteFile=False
            Exit Function
        End If
GetRemoteData = .ResponseBody
End With
Set Retrieval = Nothing
Set Ads = Server.CreateObject("Adodb.Stream")
With Ads
.Type = 1
.Open
.Write GetRemoteData
.SaveToFile server.MapPath(LocalFileName),2
.Cancel()
.Close()
End With
Set Ads=nothing
end Function

'==================================================
'函数名：ScriptHtml
'作  用：过滤html标记
'参  数：ConStr ------ 要过滤的字符串
'==================================================
Function ScriptHtml(Byval ConStr,TagName,FType)
    Dim Re
    Set Re=new RegExp
    Re.IgnoreCase =true
    Re.Global=True
    Select Case FType
    Case 1
       Re.Pattern="<" & TagName & "([^>])*>"
       ConStr=Re.Replace(ConStr,"")
    Case 2
       Re.Pattern="<" & TagName & "([^>])*>.*?</" & TagName & "([^>])*>"
       ConStr=Re.Replace(ConStr,"")
    Case 3
       Re.Pattern="<" & TagName & "([^>])*>"
       ConStr=Re.Replace(ConStr,"")
       Re.Pattern="</" & TagName & "([^>])*>"
       ConStr=Re.Replace(ConStr,"")
    End Select
    ScriptHtml=ConStr
    Set Re=Nothing
End Function

'**************************************************
'函数名：IsObjInstalled
'作  用：检查组件是否已经安装
'参  数：strClassString ----组件名
'返回值：True  ----已经安装
'       False ----没有安装
'**************************************************
Function IsObjInstalled(strClassString)
IsObjInstalled = False
Err = 0
Dim xTestObj
Set xTestObj = Server.CreateObject(strClassString)
If 0 = Err Then IsObjInstalled = True
Set xTestObj = Nothing
Err = 0
End Function