ASP的功能也很强，我们也可以用来下载文件。

<%
call downloadFile(Request("path"))

function downloadFile(strFile)
strFilename = server.MapPath(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 & " does not exist<p>")
Response.End
end if


Set f = fso.GetFile(strFilename)
intFilelength = f.size


s.LoadFromFile(strFilename)
if err then
Response.Write("<h1>Error: </h1>" & err.Description & "<p>")
Response.End
end if

Response.AddHeader "Content-Disposition", "attachment; filename=" & f.name
Response.AddHeader "Content-Length", intFilelength
Response.CharSet = "UTF-8"
Response.ContentType = "application/octet-stream"

Response.BinaryWrite s.Read
Response.Flush


s.Close
Set s = Nothing


End Function
%>

把我上面的代码存成downfile.asp
然后调用downfile.asp?path=yourfile.jpg
就会弹出一个保存框把同目录下的yourfile.jpg下载下来