3

我收到此错误“远程服务器返回错误：（530）未登录。” 使用 FtpWebRequest 上传文件时。

  1. 仅当我将文件传输到具有子文件夹的路径时才会发生错误，否则它可以正常工作。

  2. 上传大约 5 到 10 MB 的大文件时，它会超时。

    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();
    }
4

2 回答 2

0

我假设您已经尝试通过标准 FTP 客户端执行相同的操作。如果没有，请尝试。然后，我将使用 Wireshark 确保这是来自服务器的响应，并验证是否正在发送凭据。验证后，请与 FTP 所有者核实并确保服务器配置正确。

于 2013-01-11T14:17:13.727 回答
-2

我不完全知道您的问题的解决方案。但一些建议：

using(...)尽可能在IDisposable课堂上使用。当你完成它时，这会促进适当的资源释放和清理。MSDN：使用

您使用6000毫秒的超时，您是否应该为大文件增加它或使用您的本地变量timeout（从您的应用程序设置中读取）。

改进的代码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);

                }
            }

        }
于 2013-01-11T14:29:24.213 回答