栗色?蓝色?--ASP.NET 中直接下载文件

The Neurotic Fishbowl

麦林发表于 2008/6/1 12:48:10

// 文件的名称 string filename = Server.MapPath("~/test.txt"); System.IO.FileInfo aFile = new System.IO.FileInfo(filename); string na=Path.GetFileName(name); Response.Clear(); Response.ClearHeaders(); Response.BufferOutput=false; Response.ContentType="application/octet-stream"; //Response.AddHeader("Content-Disposition","attachment;filename="+na); //上面这条中文会乱码,应该下面这样写 Response.AppendHeader("Content-disposition","attachment;filename=" + HttpUtility.UrlEncode(na,System.Text.Encoding.UTF8)); Response.AddHeader("Content-Length",aFile.Length.ToString()); Response.WriteFile(name); Response.Flush(); Response.End(); public void getFile(string fileName) { System.IO.FileStream r = new System.IO.FileStream(fileName, System.IO.FileMode.Open); //文件下载实例化 //设置基本信息 Response.Buffer = false; Response.AddHeader("Connection", "Keep-Alive"); Response.ContentType = "application/octet-stream"; Response.ContentEncoding = System.Text.Encoding.Default; //保证下载文件名为中文 Response.Charset = "GB2312"; Response.AddHeader("Content-Disposition", "attachment;filename=" +HttpUtility.UrlEncode( System.IO.Path.GetFileName(fileName))); Response.AddHeader("Content-Length", r.Length.ToString()); while (true) //如果文件大于缓冲区，通过while循环多次加载文件 { //开辟缓冲区空间 byte[] buffer = new byte[1024]; //读取文件的数据 int leng = r.Read(buffer, 0, 1024); if (leng == 0) //到文件尾，结束 { break; } if (leng == 1024) //读出的文件数据长度等于缓冲区长度，直接将缓冲区数据写入 { Response.BinaryWrite(buffer); //向客户端发送数据流 } else { //读出文件数据比缓冲区小，重新定义缓冲区大小，只用于读取文件的最后一个数据块 byte[] b = new byte[leng]; for (int i = 0; i <leng; i++) { b[i] = buffer[i]; } Response.BinaryWrite(b); } } r.Close();//关闭下载文件 Response.End();//结束文件下载 }

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