ASP单击链接直接下载文件的代码

在ie中点开图片或文档的链接里，IE会自动打开它,有时候这种功能并不是我们所需的,虽然我们可以提醒用户用鼠标右键–>”目标另存为….”命令来下载文档或图片,但这样毕竟不太方便,本文描述了利用FSO及Stream方法实现IE直接下载文档. <%@ language=vbscript codepage=65001%>  

<%  
‘Filename must be input  
if Request(“Filename”)=”” then  
response.write “<h1>Error:</h1>Filename is empty!<p>” 
else  
call downloadFile(replace(replace(Request(“Filename”),””,””),”/”,””)) 
Function downloadFile(strFile) 
‘ make sure you are on the latest MDAC version for this to work 
‘ get full path of specified file 
strFilename = server.MapPath(strFile) 
‘ clear the buffer 
Response.Buffer = True 
Response.Clear 
‘ create stream 
Set s = Server.CreateObject(“ADODB.Stream”) 
s.Open 
‘ Set as binary 
s.Type = 1 
‘ load in the file 
on error resume next 
‘ check the file exists 
Set fso = Server.CreateObject(“Scripting.FileSystemObject”) 
if not fso.FileExists(strFilename) then 
Response.Write(“<h1>Error:</h1>”&strFilename&” does not exists!<p>”) 
Response.End 
end if 
‘ get length of file 
Set f = fso.GetFile(strFilename) 
intFilelength = f.size 
s.LoadFromFile(strFilename) 
if err then 
Response.Write(“<h1>Error: </h1>Unknown Error!<p>”) 
Response.End 
end if 
‘ send the headers to the users Browse 
Response.AddHeader “Content-Disposition”,”attachment; filename=”&f.name 
Response.AddHeader “Content-Length”,intFilelength 
Response.CharSet = “UTF-8” 
Response.ContentType = “application/octet-stream”  
‘ output the file to the browser  
Response.BinaryWrite s.Read  
Response.Flush  
‘ tidy up  
s.Close  
Set s = Nothing 
End Function 
end if  
%> 
<%@ language=vbscript codepage=65001%>
<%
‘Filename must be input
if Request(“Filename”)=”” then
response.write “<h1>Error:</h1>Filename is empty!<p>”
else
call downloadFile(replace(replace(Request(“Filename”),””,””),”/”,””))
Function downloadFile(strFile)
‘ make sure you are on the latest MDAC version for this to work
‘ get full path of specified file
strFilename = server.MapPath(strFile)
‘ clear the buffer
Response.Buffer = True
Response.Clear
‘ create stream
Set s = Server.CreateObject(“ADODB.Stream”)
s.Open
‘ Set as binary
s.Type = 1
‘ load in the file
on error resume next
‘ check the file exists
Set fso = Server.CreateObject(“Scripting.FileSystemObject”)
if not fso.FileExists(strFilename) then
Response.Write(“<h1>Error:</h1>”&strFilename&” does not exists!<p>”)
Response.End
end if
‘ get length of file
Set f = fso.GetFile(strFilename)
intFilelength = f.size
s.LoadFromFile(strFilename)
if err then
Response.Write(“<h1>Error: </h1>Unknown Error!<p>”)
Response.End
end if
‘ send the headers to the users Browse
Response.AddHeader “Content-Disposition”,”attachment; filename=”&f.name
Response.AddHeader “Content-Length”,intFilelength
Response.CharSet = “UTF-8”
Response.ContentType = “application/octet-stream”
‘ output the file to the browser
Response.BinaryWrite s.Read
Response.Flush
‘ tidy up
s.Close
Set s = Nothing
End Function
end if
%>