ASP写的文件下载代码

分类: 电脑/网络 >>程序设计 >>其他编程语言

问题描述:

在软件信息上有一个下载按钮：

<a href="down?filename=<%=rs("filename")%>"><img src=images/download.gif border=0></a>

在down上计算下载次数，并下载文件：

<!--#include file="conn"-->

<%

set rs2 = server.CreateObject ("Adodb.recordset")

sql2="update downtimes set downtimes=(downtimes+1) where filename="&request("filename")

rs2.open sql2,conn,1,1

set rs2=nothing

set rs = server.CreateObject ("Adodb.recordset")

sql="select * from upfile where filename="&request("filename")

rs.open sql,conn,1,1

Response.Redirect rs("filepath")

%>

filepath一般是“XXX.mp3”或“XXX.wma”、“XXX.doc”、“XXX”这样的名称，当点击下载按钮后，浏览器不显示下载对话框，而是直接在浏览器中播放或是显示这些文档或图片。请问有没有什么办法，不让浏览器调用本机播放器播放这些影音文件。当然，右键“目标另存为”可以下载，但是这样就不能计算文件的下载次数了，有两全其美的办法么？

解析:

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>文件不存在<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", "attachmentfilename=" &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

看这个函数能帮到你吗

步骤

）先引用 ICSharpCode SharpZipLib dll

） cs文件引入

using System IOusing System Text

using ICSharpCode SharpZipLib Checksumsusing ICSharpCode SharpZipLib Zipusing ICSharpCode SharpZipLib GZip

）代码

#region 下列代码为压缩并下载代码        ZipOutputStream zos = null       String strBaseDir = ""

       void dlZipDir(string strPath string strFileName)        {            MemoryStream ms = null           Response ContentType = "application/octet stream"           strFileName = HttpUtility UrlEncode(strFileName) Replace( + )           Response AddHeader("Content Disposition" "attachment   filename=" + strFileName + " zip")           ms = new MemoryStream()           zos = new ZipOutputStream(ms)           strBaseDir = strPath + ""           addZipEntry(strBaseDir)           zos Finish()           zos Close()           Response Clear()           Response BinaryWrite(ms ToArray())           Response End()       }

void addZipEntry(string PathStr)        {            DirectoryInfo di = new DirectoryInfo(PathStr)           foreach (DirectoryInfo item in di GetDirectories())            {                addZipEntry(item FullName)           }            foreach (FileInfo item in di GetFiles())            {                FileStream fs = File OpenRead(item FullName)               byte[] buffer = new byte[fs Length]               fs Read(buffer buffer Length)               string strEntryName = item FullName Replace(strBaseDir "")               ZipEntry entry = new ZipEntry(strEntryName)               zos PutNextEntry(entry)               zos Write(buffer buffer Length)               fs Close()           }        }  

PRotected void Button _Click(object sender EventArgs e)         {             string userPath ="D:华海实训（qqview ）各级账号和密码"                        dlZipDir(userPath "华海实训（qqview ）服务账号")

}

#endregion

lishixinzhi/Article/program/net/201311/14232

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