Question

请举例说明在c＃application

中借助扩展存储过程从FTP服务器到本地机器获取文件（自动）

Answer 1

如果我明白你的意思，你可能不会进入SQL存储过程。你可以从C＃做以下

//获取FTP上的文件列表

    public string[] GetFileList(string URL)
            {
                string[] downloadFiles;
                StringBuilder result = new StringBuilder();
                FtpWebRequest reqFTP;
                string ftpUserID = "xyz";
                string ftpPassword = "123";
                try
                {

                    reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(URL));
                    reqFTP.UseBinary = true;    
                    reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
                    reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
                    reqFTP.Proxy = null;
                    WebResponse response = reqFTP.GetResponse();
                    StreamReader reader = new StreamReader(response.GetResponseStream());
                    //MessageBox.Show(reader.ReadToEnd());
                    string line = reader.ReadLine();
                    while (line != null)
                    {
                       ProcessGotFile(line);

                        result.Append(line);
                        result.Append("\n");
                        line = reader.ReadLine();
                    }
                    result.Remove(result.ToString().LastIndexOf('\n'), 1);
                    reader.Close();
                    response.Close();
                    //MessageBox.Show(response.StatusDescription);
                    return result.ToString().Split('\n');
                }

    public void ProcessGotFile(string line)
            {
               string message_id;
               FTPclient ftp = new FTPclient();
               // download the file
               Download(@"D:\", line, "ftp://xyz:123@ftp.theFTP.com");
// Here you got `the` file locally and can start deal with it through the FileInfo class
            }

     public void Download(string filePath, string fileName, string URL)
            {
                FtpWebRequest reqFTP;
                try
                {

                    string ftpUserID = "xyz";
                    string ftpPassword = "123";
                    //filePath = <<The full path where the file is to be created.>>, 
                    //fileName = <<Name of the file to be created(Need not be the name of the file on FTP server).>>
                    FileStream outputStream = new FileStream(filePath
    + "\\" + fileName, FileMode.Create);

                    reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(URL + fileName));
                    reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;

                    reqFTP.UseBinary = true;
                    reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
                    reqFTP.Timeout = 500000;
                    FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
                    Stream ftpStream = response.GetResponseStream();
                    long cl = response.ContentLength;
                    int bufferSize = 2048;
                    int readCount;
                    byte[] buffer = new byte[bufferSize];
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                    while (readCount > 0)
                    {
                        outputStream.Write(buffer, 0, readCount);
                        readCount = ftpStream.Read(buffer, 0, bufferSize);
                    }


                    ftpStream.Close();
                    outputStream.Close();
                    response.Close();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }

我希望这对你有所帮助。

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