(Java) Using the FTP Session Log

The Chilkat FTP component can keep a session log if the KeepSessionLog property is turned on. This is helpful in debugging problems. Chilkat support will usually ask for a session log when working to resolve your problem, because it contains a log of the exact commands sent to the FTP server, and the exact responses received.

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkFtp2 ftp = new CkFtp2();

    ftp.put_Hostname("ftp.example.com");
    ftp.put_Username("login");
    ftp.put_Password("password");

    // Set the KeepSessionLog property in order to keep a session log.
    // The session log will continuously grow in memory.  The
    // ClearSessionLog method may be called to clear it.  The session
    // logging may be turned on/off at any point.
    ftp.put_KeepSessionLog(true);

    // Connect and login to the FTP server.
    boolean success = ftp.Connect();
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    // Change to the remote directory where the existing file is located.
    success = ftp.ChangeRemoteDir("junk");
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    // To clear the SessionLog at any point, call ClearSessionLog:
    // call ftp.ClearSessionLog();

    // Append moreHamlet.txt to hamlet.txt on the FTP server.
    String localFilename = "moreHamlet.txt";
    String remoteFilename = "hamlet.txt";

    success = ftp.AppendFile(localFilename,remoteFilename);
    if (success != true) {
        System.out.println(ftp.lastErrorText());
        return;
        }

    success = ftp.Disconnect();

    // Display the entire session log:
    System.out.println(ftp.sessionLog());

    System.out.println("File Appended!");
  }
}