如何在FTP服务器上复制文件？

如何在FTP服务器上复制文件？ 我的目标是将ftp://www.mysite.com/test.jpg复制到ftp://www.mysite.com/testcopy.jpg 。 要重命名文件，我会使用：

 var request = (FtpWebRequest)WebRequest.Create("ftp://www.mysite.com/test.jpg"); request.Credentials = new NetworkCredential(user, pass); request.Method = WebRequestMethods.Ftp.Rename; request.RenameTo = "testrename.jpg" request.GetResponse().Close(); FtpWebResponse resp = (FtpWebResponse)request.GetResponse(); 

但是，没有复制文件的方法。 你会如何复制文件？

Answer 1

试试这个：

 static void Main(string[] args) { CopyFile("countrylist.csv", "MySample.csv", "username", "password#"); } public static bool CopyFile(string fileName, string FileToCopy, string userName, string password) { try { FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftp.mysite.net/" + fileName); request.Method = WebRequestMethods.Ftp.DownloadFile; request.Credentials = new NetworkCredential(userName, password); FtpWebResponse response = (FtpWebResponse)request.GetResponse(); Stream responseStream = response.GetResponseStream(); Upload("ftp://ftp.mysite.net/" + FileToCopy, ToByteArray(responseStream), userName, password); responseStream.Close(); return true; } catch { return false; } } public static Byte[] ToByteArray(Stream stream) { MemoryStream ms = new MemoryStream(); byte[] chunk = new byte[4096]; int bytesRead; while ((bytesRead = stream.Read(chunk, 0, chunk.Length)) > 0) { ms.Write(chunk, 0, bytesRead); } return ms.ToArray(); } public static bool Upload(string FileName, byte[] Image, string FtpUsername, string FtpPassword) { try { System.Net.FtpWebRequest clsRequest = (System.Net.FtpWebRequest)System.Net.WebRequest.Create(FileName); clsRequest.Credentials = new System.Net.NetworkCredential(FtpUsername, FtpPassword); clsRequest.Method = System.Net.WebRequestMethods.Ftp.UploadFile; System.IO.Stream clsStream = clsRequest.GetRequestStream(); clsStream.Write(Image, 0, Image.Length); clsStream.Close(); clsStream.Dispose(); return true; } catch { return false; } } 

这会将文件下载到流中，然后上传它。

Answer 2

FtpWebRequest是一个轻量级的类。 Microsoft认为，一旦客户端完成，简单客户端就应该使用它来下载和删除文件。

Answer 3

我猜你用FTP无法做到这一点。 您可以做的是下载要复制的文件，然后使用新名称上传。 例如：

  try { WebClient request = new WebClient(); request.Credentials = new NetworkCredential(user, pass); byte[] data = request.DownloadData(host); MemoryStream file = new MemoryStream(data); Upload(data); } catch (Exception ex) { } ... private void Upload(byte[] buffer) { try { FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(newname); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(user, pass); Stream reqStream = request.GetRequestStream(); reqStream.Write(buffer, 0, buffer.Length); reqStream.Close(); var resp = (FtpWebResponse)request.GetResponse(); } catch (Exception ex) { } } 

Answer 4

在我们的项目中，我们做了这样的事情

 // pass parameters according to your need, // the below code is done in a hard coded manner for clarity public void Copy() { // from where you want to copy var downloadRequest = (FtpWebRequest)WebRequest.Create("ftp://www.mysite.com/test.jpg"); downloadRequest.Credentials = new NetworkCredential("userName", "passWord"); downloadRequest.Method = WebRequestMethods.Ftp.DownloadFile; var ftpWebResponse = (FtpWebResponse)downloadRequest.GetResponse(); var downloadResponse = ftpWebResponse.GetResponseStream(); int buffLength = 2048; byte[] byteBuffer = new byte[buffLength]; // bytes read from download stream. // from documentation: When overridden in a derived class, reads a sequence of bytes from the // current stream and advances the position within the stream by the number of bytes read. int bytesRead = downloadResponse.Read(byteBuffer, 0, buffLength); // the place where you want the file to go var uploadRequest = (FtpWebRequest)WebRequest.Create("ftp://www.mysite.com/testCopy.jpg"); uploadRequest.Credentials = new NetworkCredential("userName", "passWord"); uploadRequest.Method = WebRequestMethods.Ftp.UploadFile; var uploadStream = uploadRequest.GetRequestStream(); if (bytesRead > 0) { while (bytesRead > 0) { uploadStream.Write(byteBuffer, 0, bytesRead); bytesRead = downloadResponse.Read(byteBuffer, 0, buffLength); } } uploadStream.Close(); uploadStream.Dispose(); downloadResponse.Close(); ftpWebResponse.Close(); ((IDisposable)ftpWebResponse).Dispose(); }