ASP利用adodb.stream下載文件但不打開的方法

 在浏覽器的地址欄裡直接輸入一個doc或xls或jpg的文件的url路徑，那麼該文件會直接顯示在浏覽器裡。而在很多時候我們希望能直接彈出下載提示框讓用戶下載，我們該怎麼辦呢？這裡有兩種方法： 

1、設置你的服務器的iis，給doc等後綴名做映射。 
2、在向客戶端發送時設置其contenttype。 
下面詳細說明方法2 
程序代碼: 
復制代碼 代碼如下: 
<% 
Response.Buffer = true 
Response.Clear 
dim url 
Dim fso,fl,flsize 
dim Dname 
Dim objStream,ContentType,flName,isre,url1 
'*********************************************調用時傳入的下載文件名 
Dname=trim(request("n")) 
'****************************************************************** 
If Dname<>"" Then 
'******************************下載文件存放的服務端目錄 
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" 'liehuo.net
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()