Question

我在使用流将多个文件逐个上传到ftp时遇到问题。当我尝试关闭流（ftpstream.close（））写入流后，上传的文件被删除。如果我不使用.close（），很少上传文件，但第三次调用getstreamrequest（）（每个文件上传调用）会给出“此操作超时错误”

 using (Stream stream = new MemoryStream(File.ReadAllBytes(fullPath)))
                        {

                            stream.Position = 0;
                            stream.Seek(0, SeekOrigin.Begin);

                            string uri = String.Format("{0}/{1}", _FTPURL, fileName);


                            FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));

                            request.Credentials = new NetworkCredential(_FTPUSRNAME, _FTPPSWD);
                            request.Method = WebRequestMethods.Ftp.UploadFile;
                            request.KeepAlive = false;
                            request.UseBinary = true;
                            request.UsePassive = true;
                            request.ContentLength = stream.Length;
                            request.EnableSsl = false;

                            int bufferLength = 2048*20;
                            byte[] buffer = new byte[bufferLength];
                            int contentLength;

                            ftpStream = request.GetRequestStream();


                            contentLength = stream.Read(buffer, 0, bufferLength);
                            while (contentLength != 0)
                            {
                                ftpStream.Write(buffer, 0, contentLength);
                                contentLength = stream.Read(buffer, 0, bufferLength);

                            }                                
                        }
                     pageNo++;

                    }
                }
                ftpStream.Close();
            }
            while (!hasPaginationCompleted);

Answer 1

我认为您的代码中出现的问题是您拨打ftpStream = request.GetRequestStream();的地方以及使用ftpStream.Close();关闭流的位置

很多}介于两者之间，这意味着您将获得多个请求流而无需正确关闭它们。

您可能需要在与请求它相同的代码级别关闭流。

关闭ftp流会删除c＃

1 个答案: