download.asp

这是一个电子政务的源代码

<%
Response.Buffer = true
Response.Clear

dim url
Dim fso,fl,flsize
dim Dname
Dim objStream,ContentType,flName,isre,url1
'*********************************************调用时传入的下载文件名
Dname=trim(request("n"))
'******************************************************************
If Dname<>"" Then
'******************************下载文件存放的服务端目录
 url=server.MapPath(".")&"\"&Dname
'***************************************************
End If

Set fso=Server.CreateObject("Scripting.FileSystemObject")
 Set fl=fso.getfile(url)
 flsize=fl.size
 flName=fl.name
 Set fl=Nothing
 Set fso=Nothing
%>
<%
 Set objStream = Server.CreateObject("ADODB.Stream")
 objStream.Open
 objStream.Type = 1
 objStream.LoadFromFile url


  Select Case lcase(Right(flName, 4))
  Case ".asf"
   ContentType = "video/x-ms-asf"
  Case ".avi"
   ContentType = "video/avi"
  Case ".doc"
   ContentType = "application/msword"
  Case ".zip"
   ContentType = "application/zip"
  Case ".xls"
   ContentType = "application/vnd.ms-excel"
  Case ".gif"
   ContentType = "image/gif"
  Case ".jpg", "jpeg"
   ContentType = "image/jpeg"
  Case ".wav"
   ContentType = "audio/wav"
  Case ".mp3"
   ContentType = "audio/mpeg3"
  Case ".mpg", "mpeg"
   ContentType = "video/mpeg"
  Case ".rtf"
   ContentType = "application/rtf"
  Case ".htm", "html"
   ContentType = "text/html"
  Case ".txt"
   ContentType = "text/plain"
  Case Else
   ContentType = "application/octet-stream"
  End Select

 

  Response.AddHeader "Content-Disposition", "attachment; filename=" & flName
  Response.AddHeader "Content-Length", flsize

  Response.Charset = "UTF-8"
  Response.ContentType = ContentType

  Response.BinaryWrite objStream.Read
  Response.Flush
  response.Clear()
 objStream.Close
 Set objStream = Nothing

%>