使用 TLS/SSL 显式加密将文件上传到 FTP 给出错误

Question

我必须将文件上传到 ftp 站点。我可以使用 WINSCP

将文件传输到该 ftp 文件夹

现在我正在尝试使用 c# 和下面的代码来做同样的事情

FtpWebRequest ftpClient = (FtpWebRequest)FtpWebRequest.Create(
"ftp://ftps-xxxxx.xxx.xx.com:xxx/folder/text.txt");
         ftpClient.Credentials = new System.Net.NetworkCredential("username", "password");
          ftpClient.Method = System.Net.WebRequestMethods.Ftp.UploadFile;
          ftpClient.UseBinary = true;
          ftpClient.KeepAlive = true;
          System.IO.FileInfo fi = new System.IO.FileInfo(@"C:\d\text.txt");
          ftpClient.ContentLength = fi.Length;
          byte[] buffer = new byte[4097];
          int bytes = 0;
          int total_bytes = (int)fi.Length;
          System.IO.FileStream fs = fi.OpenRead();
          ftpClient.KeepAlive = false;
          ftpClient.Timeout = -1;
          System.IO.Stream rs = ftpClient.GetRequestStream();
          while (total_bytes > 0)
          {
             bytes = fs.Read(buffer, 0, buffer.Length);
             rs.Write(buffer, 0, bytes);
             total_bytes = total_bytes - bytes;
           }
          fs.Close();
          rs.Close();
          FtpWebResponse uploadResponse = (FtpWebResponse)ftpClient.GetResponse();
          string value = uploadResponse.StatusDescription;
          uploadResponse.Close();

当它到达System.IO.Stream rs = ftpClient.GetRequestStream(); 出现以下错误

远程服务器返回错误：(500) 语法错误，命令 无法识别。

Answer 1

我认为你不需要重新发明轮子，只需像这样转移：

        using (System.Net.WebClient c = new System.Net.WebClient())
        {
            c.Credentials = new System.Net.NetworkCredential("username", "password");
            c.UploadFile("ftp://...", @"C:\d\test.txt");
        }