FtpWebRequest返回「遠程服務器返回錯誤：（530）未登錄」

Question

我收到此錯誤「遠程服務器返回錯誤：（530）未登錄。」同時使用FtpWebRequest上傳文件。只有當我將文件轉移到其子文件夾的路徑發生

1. 錯誤，否則它完全工作正常。
   

2. 上傳大約5到10 MB的大文件時，超時。

   void FtpTransfer(string siteName, string portNumber, string ftpUser, string ftpPassword, string destPath) 
   { 
       FtpWebRequest request; 
       DateTime now = DateTime.Now; 
       string now_string = 
        (now.Year).ToString() 
        + "_" + 
        (now.Month).ToString("0#") 
        + "_" + 
        (now.Day).ToString("0#"); 
   
       foreach (object item in listBox1.Items) 
       { 
        string srcFile = item.ToString(); 
        lblSource.Text = srcFile; 
        Uri uri = new Uri(srcFile); 
        string destFile = srcFile.Replace(lblPath.Text, "").Replace("\\\\", "\\").Replace("\\", "/").Replace("www/",""); 
   
        Configuration oConfig = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); 
        int timeout = int.Parse(oConfig.AppSettings.Settings["TimeOut"].Value); 
   
        if (siteName == "mysite1.co.in" || siteName == "sd1.mysite2.net") 
         destFile = "ftp://" + siteName + ":" + portNumber + "/" + siteName + "/_test" + destFile; //error here 
        else 
         destFile = "ftp://" + siteName + ":" + portNumber + "/" + siteName + destFile; //no error 
        lblDestn.Text = destFile; 
   
        request = (FtpWebRequest)WebRequest.Create(destFile); 
        request.Credentials = new NetworkCredential(ftpUser, ftpPassword); 
        request.Timeout = 6000; 
        request.Method = WebRequestMethods.Ftp.UploadFile; 
        request.UsePassive = true; 
        request.UseBinary = true; 
        request.KeepAlive = true; 
   
        // Copy the contents of the file to the request stream. 
        StreamReader sourceStream = new StreamReader(@srcFile); 
        byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); 
        sourceStream.Close(); 
        request.ContentLength = fileContents.Length; 
   
        Stream requestStream = request.GetRequestStream(); 
        requestStream.Write(fileContents, 0, fileContents.Length); 
        requestStream.Close(); 
   
        FtpWebResponse response = (FtpWebResponse)request.GetResponse(); 
   
        string path = System.IO.Path.GetDirectoryName(Environment.GetCommandLineArgs()[0]); 
        System.IO.StreamWriter w = System.IO.File.AppendText(path + "\\log_" + now_string + ".txt"); 
        w.WriteLine(DateTime.Now.ToString("yyy-MM-dd HH:mm:ss") 
         + " " 
         + srcFile 
         + " " 
         + destFile 
         + " " 
         + response.StatusDescription); 
   
        w.Close(); 
   
        response.Close(); 
       } 
   

Answer 1

我假設你已經嘗試通過一個標準的FTP客戶端來完成相同的操作。如果沒有，請嘗試。然後我會使用Wireshark來確保這是來自服務器的響應，並確認正在發送credentails。在驗證之後，請檢查FTP所有者並確保服務器配置正確。

Answer 2

我不完全知道你的問題的解決方案。但一些建議：

儘可能在IDisposable上使用using(...)。這可以在您完成後促進適當的資源釋放和清理。 MSDN: Using

您使用的超時時間爲6000毫秒，您是否應該增加它對於大文件或使用本地變量timeout（從您的應用程序設置讀取）。

改進代碼using：

private void FtpTransfer(string siteName, string portNumber, string ftpUser, string ftpPassword, string destPath) 
     { 
      DateTime now = DateTime.Now; 
      string now_string = 
       (now.Year).ToString() 
       + "_" + 
       (now.Month).ToString("0#") 
       + "_" + 
       (now.Day).ToString("0#"); 

      foreach (object item in listBox1.Items) 
      { 
       string srcFile = item.ToString(); 
       lblSource.Text = srcFile; 
       Uri uri = new Uri(srcFile); 
       string destFile = srcFile.Replace(lblPath.Text, "").Replace("\\\\", "\\").Replace("\\", "/").Replace("www/", ""); 

       Configuration oConfig = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); 
       int timeout = int.Parse(oConfig.AppSettings.Settings["TimeOut"].Value); 

       if (siteName == "mysite1.co.in" || siteName == "sd1.mysite2.net") 
        destFile = "ftp://" + siteName + ":" + portNumber + "/" + siteName + "/_test" + destFile; //error here 
       else 
        destFile = "ftp://" + siteName + ":" + portNumber + "/" + siteName + destFile; //no error 
       lblDestn.Text = destFile; 

       FtpWebRequest request = (FtpWebRequest)WebRequest.Create(destFile); 
       request.Credentials = new NetworkCredential(ftpUser, ftpPassword); 
       request.Timeout = 6000; 
       request.Method = WebRequestMethods.Ftp.UploadFile; 
       request.UsePassive = true; 
       request.UseBinary = true; 
       request.KeepAlive = true; 

       // Copy the contents of the file to the request stream. 
       byte[] fileContents; 
       using (StreamReader sourceStream = new StreamReader(@srcFile)) 
       { 
        fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); 
       } 
       request.ContentLength = fileContents.Length; 

       using (Stream requestStream = request.GetRequestStream()) 
       { 
        requestStream.Write(fileContents, 0, fileContents.Length); 
       } 

       using (FtpWebResponse response = (FtpWebResponse)request.GetResponse()) 
       { 
        string path = System.IO.Path.GetDirectoryName(Environment.GetCommandLineArgs()[0]); 
        System.IO.StreamWriter w = System.IO.File.AppendText(path + "\\log_" + now_string + ".txt"); 
        w.WriteLine(DateTime.Now.ToString("yyy-MM-dd HH:mm:ss") 
           + " " 
           + srcFile 
           + " " 
           + destFile 
           + " " 
           + response.StatusDescription); 

       } 
      } 

     }