ASP实现强制图片下载函数


            图片不进行处理，图片默认是用浏览器打开显示，如果希望图片变为下载可以使用以下代码





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





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