<!--#include file="conn1.asp"-->
<%
dim AsfFile_No,sql,filename
AsfFile_No=request.QueryString("AsfFile_No")
set rs=server.CreateObject("ADODB.RecordSet")
sql="select * from AsfFiles where AsfFile_No='"&AsfFile_No&"'"
rs.open sql,conn,3,3
filename=rs("AsfFile_Name")
call downloadFile(filename)
Function downloadFile(strFile)
strFilename = strFile
Response.Buffer = True
Response.Clear
Set s = Server.CreateObject("ADODB.Stream")
s.Open
s.Type = 1
on error resume next
Set fso = Server.CreateObject("Scripting.FileSystemObject")
if not fso.FileExists(strFilename) then
Response.Write("<h1>Error:</h1>" & strFilename & "文件不存在！<p>")
Response.End
end if
Set f = fso.GetFile(strFilename)
sFilelength = f.size
s.LoadFromFile(strFilename)
if err then
Response.Write("<h1>Error: </h1>" & err.Description & "<p>")
Response.End
end if
Select Case lcase(Right(filename, 4))
Case ".asf"
ContentType = "video/x-ms-asf"
Case ".avi"
ContentType = "video/avi"
Case ".doc"
ContentType = "application/msword"
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=" & f.name
Response.AddHeader "Content-Length",sFilelength //在这个地方超过200M，文件大小变为0K
Response.CharSet = "UTF-8"
Response.ContentType = ContentType
Response.BinaryWrite s.Read
Response.Flush
s.Close
Set s = Nothing
set f=nothing
set fso=nothing
End Function
rs.close
set rs=nothing
%>
