隐藏文件真实地址的文件下载下来却无法解压

[abjba]

<%
filename="1.rar"
filePath = Server.MapPath(file)
set BytesStream = server.createobject("ADODB.Stream")
With BytesStream
.Open
.Type = 2
.LoadFromFile filePath
dataStream = .Readtext
.Close
End With
set BytesStream=nothing

Response.AddHeader "content-disposition","attachment;filename="&filename
Response.ContentType="application/octet-stream"
Response.BinaryWrite dataStream
%>

但是我发现，使用这个方法下载的"1.rar"居然无法解压，查看大小，竟然比原文件少1个字节。不知道为什么。期盼高手解答。

[gingerkang]

dataStream = .Read

Read 方法
使用方法如下：
Object.Read(Numbytes)
说明：读取指定长度的二进制内容。
参数说明：Numbytes指定的要读取的找度，不指定则读取全部。

ReadText 方法
使用方法如下：
Object.ReadText(NumChars)
说明：读取指定长度的文本
参数说明：NumChars指定的要读取的找度，不指定则读取全部。

[abjba]

有人知道吗？

[一把编程的菜刀]

给你个函数：

<% 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
From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER"))
Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME"))
If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then
Response.WrIte "该文件不存在或者已经删除."
Response.End
End If
Response.RedIrect Request.ServerVarIables("HTTP_REFERER")
Response.End
End If
FileExt=MId(StrFIlename,InStrRev(StrFIleName, ".")+1)
Select Case UCase(FIleExt)
Case "ASP", "ASA", "ASPX", "ASAX", "MDB", "PHP", "JSP", "SHTML", "HTML", "HTM", "TV", "DATA"
From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER"))
Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME"))
If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then
Response.WrIte "该文件不存在或者已经删除."
Response.End
End If
Response.RedIrect Request.ServerVarIables("HTTP_REFERER")
Response.End
End Select
Set F=Fso.GetFIle(StrFIlename)
IntFIlelength=F.SIze
s.LoadFromFIle(StrFIlename)
If Err Then
From_Url=Cstr(Request.ServerVarIables("HTTP_REFERER"))
Serv_Url=Cstr(Request.ServerVarIables("SERVER_NAME"))
If MId(From_Url,8,len(Serv_Url)) <> Serv_Url Then
Response.WrIte "该文件数据不完整或许已损坏."
Response.End
End If
Response.RedIrect Request.ServerVarIables("HTTP_REFERER")
Response.End
End If
Set Upload=Server.CreateObJect("PersIts.Upload")
If Upload Is Nothing Then
Response.AddHeader "Content-DIsposItIon","attachment; FIlename="&F.Name
Response.AddHeader "Content-Length",IntFilelength
Response.CharSet="UTF-8"
Response.ContentType="application/x-download"
Response.BinaryWrite S.Read
Response.Flush
S.Close
Set s=NothIng
Else
Upload.SendBinary StrFIlename,True,"application/x-download",False
End If
End FunctIon
%>

[一把编程的菜刀]

看清楚
用的是
Response.ContentType="application/x-download"

[abjba]

3、4楼的回答依然解决不了问题。

我发现如果要下载的1.rar文件比较大（比如8M以上），那么下载时，就要等半天，即使在本机运行也是如此，而且cpu使用率接近100%，似乎在进行什么转换。不知道为什么？

[abjba]

有人知道吗？

[webdevelop]

Set fl=Nothing
Set fso=Nothing
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Open
objStream.Type = 1
objStream.LoadFromFile url
Select Case lcase(Right(flName, 4))
Case ".asf"
ContentType = "video/x-ms-asf"
Case ".avi"
ContentType = "video/avi"
Case ".doc"
ContentType = "application/msword"
Case ".zip"
ContentType = "application/zip"
Case ".xls"
ContentType = "application/vnd.ms-excel"
Case ".gif"
ContentType = "image/gif"
Case ".jpg", "jpeg"
ContentType = "image/jpeg"
Case ".bmp"
ContentType = "image/bmp"
Case ".ppt"
ContentType = "application/vnd.ms-powerpoint"
Case ".mdb"
ContentType = "application/x-msaccess"
Case ".wav"
ContentType = "audio/wav"
Case ".mp3"
ContentType = "audio/mpeg3"
Case ".mpg", "mpeg"
ContentType = "video/mpeg"
Case ".rtf"
ContentType = "application/rtf"
Case ".htm", "html" ,"htm(1)"
ContentType = "text/html"
Case ".txt"
ContentType = "text/plain"
Case Else
ContentType = "application/octet-stream"
End Select

[wcwtitxu]

With BytesStream
.Open
.Type = 1
.LoadFromFile filePath
dataStream = .Read(-1)
.Close
End With