我创建了一个小的Windows Forms应用程序,用于将文件上传到我们的一个客户FTP站点之一。但是我遇到的问题是,当我在本地计算机上运行此应用程序时,它可以成功上传文件。但是如果我在我们的服务器上运行此程序,我会收到以下错误消息:
远程服务器返回错误:(550) 文件不可用(例如,文件未找到,无法访问文件),该错误发生在代码 'objFTPRequest.GetRequestStream();'。
有人知道为什么吗?我需要配置防火墙或其他什么东西吗?以下是我的代码:
FileInfo objFile = new FileInfo(filename);
FtpWebRequest objFTPRequest;
// Create FtpWebRequest object
objFTPRequest = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/outbox/" + objFile.Name));
// Set Credintials
objFTPRequest.Credentials = new NetworkCredential(ftpUserName, ftpPassword);
// By default KeepAlive is true, where the control connection is
// not closed after a command is executed.
objFTPRequest.KeepAlive = false;
// Set the data transfer type.
objFTPRequest.UseBinary = true;
// Set content length
objFTPRequest.ContentLength = objFile.Length;
// Set request method
objFTPRequest.Method = WebRequestMethods.Ftp.UploadFile;
// Set buffer size
int intBufferLength = 16 * 1024;
byte[] objBuffer = new byte[intBufferLength];
// Opens a file to read
FileStream objFileStream = objFile.OpenRead();
// Get Stream of the file
Stream objStream = objFTPRequest.GetRequestStream();
int len = 0;
while ((len = objFileStream.Read(objBuffer, 0, intBufferLength)) != 0)
{
// Write file Content
objStream.Write(objBuffer, 0, len);
}
objStream.Close();
objFileStream.Close();