<%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
<%
'读取远程文件的函数
Public Function readRemoteFile(RemoteDataUrl)
Dim XMLHttp
'On Error Resume Next
Set XMLHttp = Server.CreateObject("Microsoft.XMLHTTP")
With XMLHttp
.Open "Get", RemoteDataUrl, False
.Send
readRemoteFile = BytesToBstr(.responseBody, "UTF-8")
End With
Set XMLHttp = Nothing
End Function
'编码转换
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 tobody()
Dim dateVal
'先试图访问缓存，看有没有，或者过期没有
dateVal = Application("defaultdate")
If dateVal = "" Then dateVal = DateAdd("s",1200,Now)
If Application("default") <> "" Then
If DateDiff("s", Now, dateVal) > 0 Then
'如果有，就从缓存读取，对服务器来说，就是从内存读取
tobody = Application("default")&"<!--new cache"&dateVal&"-->"
Exit Function
End If
End If
Dim body
'如果缓存没有，则从远程读取，并写入缓存，设置缓存时间。
body = readRemoteFile("http://www.aoaob.com/default.asp")
tobody = body&"<!--made cache"&Now&"-->"
Application.Lock
Application("default") = body
Application("defaultdate") = DateAdd("s",1200,Now)
Application.UnLock
End Function
Response.Write(tobody())
%>