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/*服務器本機文件下載*/ Response.Clear(); Response.ClearContent(); Response.ClearHeaders(); Response.AddHeader("Content-Transfer-Encoding", "binary"); Response.ContentType = "application/octet-stream"; Response.ContentEncoding = Encoding.Default;var fileInfo = new FileInfo(Server.MapPath(url)); Response.AddHeader("Content-Disposition", "attachment;filename=" + fileInfo.Name + ""); Response.AddHeader("Content-Length", fileInfo.Length.ToString()); Response.WriteFile(fileInfo.FullName); Response.Flush();Response.End(); /*Http服務器遠程文件下載*/ Response.Clear(); Response.ClearContent(); Response.ClearHeaders(); Response.AddHeader("Content-Transfer-Encoding", "binary"); Response.ContentType = "application/octet-stream"; Response.ContentEncoding = Encoding.Default;var req= (HttpWebRequest)WebRequest.Create(url); var fileName= url.Substring(url.LastIndexOf('/') + 1); Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName + ""); using (var res = req.GetResponse()) {var fileLength = (int)res.ContentLength;Response.AddHeader("Content-Length", fileLength.ToString());using (var reqStream = res.GetResponseStream()){var byteArray = new byte[1024];int count;while (reqStream != null && (count=reqStream.Read(byteArray, 0, byteArray.Length)) > 0){Response.OutputStream.Write(byteArray, 0, count);Response.Flush();}} } req?.Abort();Response.End();

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總結

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