我的下载方法如下：
public static void down(string filePath)
{
FileInfo DownloadFile = new FileInfo(filePath);
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.ContentType = "application/octet-stream";
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(DownloadFile.Name, Encoding.UTF8));
HttpContext.Current.Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());
HttpContext.Current.Response.WriteFile(DownloadFile.FullName);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.End();
}
方法本身没有问题，如果这个页面没有参数，直接调用就没事，即使调用迅雷也是下载原来的文件，但如果页面有参数，就会导致调用迅雷把这个页面给下载下来，后缀是.aspx
找了半天原因才发现是页面参数捣的鬼，问下各位高手有什么解决办法么？我不想用a连接或这直接Response.Redirect
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- C# code
//TransmitFile实现下载protected void Button1_Click(object sender, EventArgs e){Response.ContentType = "application/x-zip-compressed";Response.AddHeader("Content-Disposition", "attachment;filename=z.zip");string filename = Server.MapPath("DownLoad/z.zip");Response.TransmitFile(filename);}//WriteFile实现下载protected void Button2_Click(object sender, EventArgs e){string fileName ="asd.txt";//客户端保存的文件名string filePath=Server.MapPath("DownLoad/aaa.txt");//路径FileInfo fileInfo = new FileInfo(filePath);Response.Clear();Response.ClearContent();Response.ClearHeaders();Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);Response.AddHeader("Content-Length", fileInfo.Length.ToString());Response.AddHeader("Content-Transfer-Encoding", "binary");Response.ContentType = "application/octet-stream";Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");Response.WriteFile(fileInfo.FullName);Response.Flush();Response.End();}//WriteFile分块下载protected void Button3_Click(object sender, EventArgs e){string fileName = "aaa.txt";//客户端保存的文件名string filePath = Server.MapPath("DownLoad/aaa.txt");//路径System.IO.FileInfo fileInfo = new System.IO.FileInfo(filePath);if (fileInfo.Exists == true){const long ChunkSize = 102400;//100K 每次读取文件，只读取100K，这样可以缓解服务器的压力byte[] buffer = new byte[ChunkSize];Response.Clear();System.IO.FileStream iStream = System.IO.File.OpenRead(filePath);long dataLengthToRead = iStream.Length;//获取下载的文件总大小Response.ContentType = "application/octet-stream";Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName));while (dataLengthToRead > 0 && Response.IsClientConnected){int lengthRead = iStream.Read(buffer, 0, Convert.ToInt32(ChunkSize));//读取的大小Response.OutputStream.Write(buffer, 0, lengthRead);Response.Flush();dataLengthToRead = dataLengthToRead - lengthRead;}Response.Close();}}
------解决方案--------------------------------------------------------
方法一：点击保存后在弹出页面选择使用IE下载
方法二： 把迅雷中的设置--高级 --监视浏览器的勾去掉
再有就是试试压缩下载看行不行
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- HTML code
<body> <form id="form1" runat="server"> <div> <asp:Button ID="btnExport" runat="server" Text="导出测试" onclick="btnExport_Click" /> </div> </form></body>