ASP隐藏文件地址，并在下载时替换文件名

<!--#include file="conn.asp"--><!-- 引入数据库连接文件 -->
<%
Dim Stream
Dim Contents
Dim FileName
Dim FileExt
Dim downName
Const adTypeBinary = 1
Fileid = Request.QueryString("File") 'GET传来的文件名变量

  set rs=server.createobject("adodb.recordset") '创建记录集对象
  sql="select top 1 * from files where F_id="&Fileid     'SQL查询语句
  rs.open sql,conn,1,1                          '打开记录集

if rs.recordcount<1 then
Response.Write "找不到此文件"
else

FileName=rs("F_DocURL")
DownName=rs("F_title")&Mid(FileName, InStrRev(FileName, "."))
' 下面是不希望下载的文件
FileExt = Mid(FileName, InStrRev(FileName, ".") + 1)
Select Case UCase(FileExt)
Case "ASP", "ASA", "ASPX", "ASAX", "MDB"
Response.Write "受保护文件,不能下载."
Response.End
End Select
' 下载这个文件
Response.Clear
Response.ContentType = "application/octet-stream"
Response.AddHeader "content-disposition", "attachment; filename=" & DownName
Set Stream = server.CreateObject("ADODB.Stream")
Stream.Type = adTypeBinary
Stream.Open
Stream.LoadFromFile Server.MapPath("Attachment/"+FileName) '设置路径
While Not Stream.EOS
Response.BinaryWrite Stream.Read(1024 * 64)
Wend
Stream.Close
Set Stream = Nothing
Response.Flush
Response.End

End if
rs.close                                        '关闭记录集
Set rs=Nothing                                  '释放记录集
conn.close                                      '关闭数据库连接
Set conn=Nothing                                '释放数据库连接
%>