Example usage for org.apache.commons.net.ftp FTPClient FTPClient

Introduction

In this page you can find the example usage for org.apache.commons.net.ftp FTPClient FTPClient.

Prototype

public FTPClient() 

Source Link

Document

Default FTPClient constructor.

Usage

From source file:FTP.FTPUploadFileDemo.java

public static void main(String[] args) {
    String server = "plutao.telemar";
    int port = 21;
    String user = "usrcorj";
    String pass = "usr341!tg";

    ftpClient = new FTPClient();

    Conect(server, port, user, pass);//from   w  w  w  .  ja v  a 2  s.  c om
    UploadFile("C:\\Users\\fernando.m.souza\\Desktop\\Teste.txt", "\\UsrCoRJ\\Automacoes\\Teste.txt");
    try {
        if (ftpClient.isConnected()) {
            ftpClient.logout();
            ftpClient.disconnect();
        }
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}

---

From source file:com.run.FtpClientExample.java

public static void main(String[] args) {

    FTPClient client = new FTPClient();
    FileOutputStream fos = null;//from   w ww  .  j  a va 2 s .  c o m

    try {
        client.connect(ARDroneConstants.IP_ADDRESS, ARDroneConstants.FTP_PORT);

        if (!client.login("anonymous", ""))
            System.err.println("login failed");

        client.setFileType(FTP.BINARY_FILE_TYPE);

        String filename = "version.txt";
        fos = new FileOutputStream(filename);

        if (!client.retrieveFile("/" + filename, fos))
            System.err.println("cannot find file");

        System.out.println("done");
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (fos != null) {
                fos.flush();
                fos.close();
            }
            client.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

---

From source file:airnowgrib2tojson.AirNowGRIB2toJSON.java

/**
 * @param args the command line arguments
 *//*from   ww  w  .j  av a  2  s .  c  o m*/
public static void main(String[] args) {

    SimpleDateFormat GMT = new SimpleDateFormat("yyMMddHH");
    GMT.setTimeZone(TimeZone.getTimeZone("GMT-2"));

    System.out.println(GMT.format(new Date()));

    FTPClient ftpClient = new FTPClient();
    FileOutputStream fos = null;

    try {
        //Connecting to AirNow FTP server to get the fresh AQI data  
        ftpClient.connect("ftp.airnowapi.org");
        ftpClient.login("pixelshade", "GZDN8uqduwvk");
        ftpClient.enterLocalPassiveMode();
        ftpClient.setFileType(FTP.BINARY_FILE_TYPE);

        //downloading .grib2 file
        File of = new File("US-" + GMT.format(new Date()) + "_combined.grib2");
        OutputStream outstr = new BufferedOutputStream(new FileOutputStream(of));
        InputStream instr = ftpClient
                .retrieveFileStream("GRIB2/US-" + GMT.format(new Date()) + "_combined.grib2");
        byte[] bytesArray = new byte[4096];
        int bytesRead = -1;
        while ((bytesRead = instr.read(bytesArray)) != -1) {
            outstr.write(bytesArray, 0, bytesRead);
        }

        //Close used resources
        ftpClient.completePendingCommand();
        outstr.close();
        instr.close();

        // logout the user 
        ftpClient.logout();

    } catch (SocketException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            //disconnect from AirNow server
            ftpClient.disconnect();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    try {
        //Open .grib2 file
        final File AQIfile = new File("US-" + GMT.format(new Date()) + "_combined.grib2");
        final GridDataset gridDS = GridDataset.open(AQIfile.getAbsolutePath());

        //The data type needed - AQI; since it isn't defined in GRIB2 standard,
        //Aerosol type is used instead; look AirNow API documentation for details.
        GridDatatype AQI = gridDS.findGridDatatype("Aerosol_type_msl");

        //Get the coordinate system for selected data type;
        //cut the rectangle to work with - time and height axes aren't present in these files
        //and latitude/longitude go "-1", which means all the data provided.
        GridCoordSystem AQIGCS = AQI.getCoordinateSystem();
        List<CoordinateAxis> AQI_XY = AQIGCS.getCoordinateAxes();
        Array AQIslice = AQI.readDataSlice(0, 0, -1, -1);

        //Variables for iterating through coordinates
        VariableDS var = AQI.getVariable();
        Index index = AQIslice.getIndex();

        //Variables for counting lat/long from the indices provided
        double stepX = (AQI_XY.get(2).getMaxValue() - AQI_XY.get(2).getMinValue()) / index.getShape(1);
        double stepY = (AQI_XY.get(1).getMaxValue() - AQI_XY.get(1).getMinValue()) / index.getShape(0);
        double curX = AQI_XY.get(2).getMinValue();
        double curY = AQI_XY.get(1).getMinValue();

        //Output details
        OutputStream ValLog = new FileOutputStream("USA_AQI.json");
        Writer ValWriter = new OutputStreamWriter(ValLog);

        for (int j = 0; j < index.getShape(0); j++) {
            for (int i = 0; i < index.getShape(1); i++) {
                float val = AQIslice.getFloat(index.set(j, i));

                //Write the AQI value and its coordinates if it's present by i/j indices
                if (!Float.isNaN(val))
                    ValWriter.write("{\r\n\"lat\":" + curX + ",\r\n\"lng\":" + curY + ",\r\n\"AQI\":" + val
                            + ",\r\n},\r\n");

                curX += stepX;
            }
            curY += stepY;
            curX = AQI_XY.get(2).getMinValue();
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:luisjosediez.Ejercicio2.java

/**
 * @param args the command line arguments
 *//*from ww w  .java  2s  .  c  o m*/
public static void main(String[] args) {
    // TODO code application logic here
    System.out.println("Introduce la direccin de un servidor ftp: ");
    FTPClient cliente = new FTPClient();
    String servFTP = cadena();
    String clave = "";
    System.out.println("Introduce usuario (vaco para conexin annima): ");
    String usuario = cadena();
    String opcion;
    if (usuario.equals("")) {
        clave = "";
    } else {
        System.out.println("Introduce contrasea: ");
        clave = cadena();
    }
    try {
        cliente.setPassiveNatWorkaround(false);
        cliente.connect(servFTP, 21);
        boolean login = cliente.login(usuario, clave);
        if (login) {
            System.out.println("Conexin ok");
        } else {
            System.out.println("Login incorrecto");
            cliente.disconnect();
            System.exit(1);
        }
        do {

            System.out.println("Orden [exit para salir]: ");
            opcion = cadena();
            if (opcion.equals("ls")) {
                FTPFile[] files = cliente.listFiles();
                String tipos[] = { "Fichero", "Directorio", "Enlace" };
                for (int i = 0; i < files.length; i++) {
                    System.out.println("\t" + files[i].getName() + "\t=> " + tipos[files[i].getType()]);
                }
            } else if (opcion.startsWith("cd ")) {
                try {
                    cliente.changeWorkingDirectory(opcion.substring(3));
                } catch (IOException e) {
                }
            } else if (opcion.equals("help")) {
                System.out.println(
                        "Puede ejecutar los comandos 'exit', 'ls', 'cd', 'get' y 'upload'. Para ms detalles utilice 'help <comando>'.");
            } else if (opcion.startsWith("help ")) {
                if (opcion.endsWith(" get")) {
                    System.out.println(
                            "Permite descargar un archivo concreto. Uso: 'get <rutaArchivoADescargar>'.");
                } else if (opcion.endsWith(" ls")) {
                    System.out.println("Lista los ficheros y directorios en la ubicacin actual. Uso: 'ls'.");
                } else if (opcion.endsWith(" cd")) {
                    System.out.println("Permite cambiar la ubicacin actual. Uso: 'cd <rutaDestino>'.");
                } else if (opcion.endsWith(" put")) {
                    System.out.println(
                            "Permite subir un archivo al directorio actual. Uso: 'put <rutaArchivoASubir>'.");
                }
            } else if (opcion.startsWith("get ")) {
                try {
                    System.out.println("Indique la carpeta de descarga: ");
                    try (FileOutputStream fos = new FileOutputStream(cadena() + opcion.substring(4))) {
                        cliente.retrieveFile(opcion.substring(4), fos);
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                } catch (Exception e) {
                }
            } else if (opcion.startsWith("put ")) {
                try {
                    try {

                        System.out.println(opcion.substring(4));

                        File local = new File(opcion.substring(4));

                        System.out.println(local.getName());

                        InputStream is = new FileInputStream(opcion.substring(4));

                        OutputStream os = cliente.storeFileStream(local.getName());

                        byte[] bytesIn = new byte[4096];

                        int read = 0;

                        while ((read = is.read(bytesIn)) != -1) {

                            os.write(bytesIn, 0, read);

                        }

                        is.close();
                        os.close();

                        boolean completed = cliente.completePendingCommand();

                        if (completed) {
                            System.out.println("The file is uploaded successfully.");
                        }

                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                } catch (Exception e) {
                }
            }

        } while (!(opcion.equals("exit")));

        boolean logout = cliente.logout();
        if (logout)
            System.out.println("Logout...");
        else
            System.out.println("Logout incorrecto");

        cliente.disconnect();

    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:examples.server2serverFTP.java

public static final void main(String[] args) {
    String server1, username1, password1, file1;
    String server2, username2, password2, file2;
    FTPClient ftp1, ftp2;//from  w w w  . ja v a2  s.  c  o  m
    ProtocolCommandListener listener;

    if (args.length < 8) {
        System.err.println("Usage: ftp <host1> <user1> <pass1> <file1> <host2> <user2> <pass2> <file2>");
        System.exit(1);
    }

    server1 = args[0];
    username1 = args[1];
    password1 = args[2];
    file1 = args[3];
    server2 = args[4];
    username2 = args[5];
    password2 = args[6];
    file2 = args[7];

    listener = new PrintCommandListener(new PrintWriter(System.out));
    ftp1 = new FTPClient();
    ftp1.addProtocolCommandListener(listener);
    ftp2 = new FTPClient();
    ftp2.addProtocolCommandListener(listener);

    try {
        int reply;
        ftp1.connect(server1);
        System.out.println("Connected to " + server1 + ".");

        reply = ftp1.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp1.disconnect();
            System.err.println("FTP server1 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp1.isConnected()) {
            try {
                ftp1.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server1.");
        e.printStackTrace();
        System.exit(1);
    }

    try {
        int reply;
        ftp2.connect(server2);
        System.out.println("Connected to " + server2 + ".");

        reply = ftp2.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp2.disconnect();
            System.err.println("FTP server2 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp2.isConnected()) {
            try {
                ftp2.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server2.");
        e.printStackTrace();
        System.exit(1);
    }

    __main: try {
        if (!ftp1.login(username1, password1)) {
            System.err.println("Could not login to " + server1);
            break __main;
        }

        if (!ftp2.login(username2, password2)) {
            System.err.println("Could not login to " + server2);
            break __main;
        }

        // Let's just assume success for now.
        ftp2.enterRemotePassiveMode();

        ftp1.enterRemoteActiveMode(InetAddress.getByName(ftp2.getPassiveHost()), ftp2.getPassivePort());

        // Although you would think the store command should be sent to server2
        // first, in reality, ftp servers like wu-ftpd start accepting data
        // connections right after entering passive mode.  Additionally, they
        // don't even send the positive preliminary reply until after the
        // transfer is completed (in the case of passive mode transfers).
        // Therefore, calling store first would hang waiting for a preliminary
        // reply.
        if (ftp1.remoteRetrieve(file1) && ftp2.remoteStoreUnique(file2)) {
            //      if(ftp1.remoteRetrieve(file1) && ftp2.remoteStore(file2)) {
            // We have to fetch the positive completion reply.
            ftp1.completePendingCommand();
            ftp2.completePendingCommand();
        } else {
            System.err.println("Couldn't initiate transfer.  Check that filenames are valid.");
            break __main;
        }

    } catch (IOException e) {
        e.printStackTrace();
        System.exit(1);
    } finally {
        try {
            if (ftp1.isConnected()) {
                ftp1.logout();
                ftp1.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }

        try {
            if (ftp2.isConnected()) {
                ftp2.logout();
                ftp2.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }
    }
}

---

From source file:examples.ftp.java

public static final void main(String[] args) {
    int base = 0;
    boolean storeFile = false, binaryTransfer = false, error = false;
    String server, username, password, remote, local;
    FTPClient ftp;//w  w w. j a va2  s . c om

    for (base = 0; base < args.length; base++) {
        if (args[base].startsWith("-s"))
            storeFile = true;
        else if (args[base].startsWith("-b"))
            binaryTransfer = true;
        else
            break;
    }

    if ((args.length - base) != 5) {
        System.err.println(USAGE);
        System.exit(1);
    }

    server = args[base++];
    username = args[base++];
    password = args[base++];
    remote = args[base++];
    local = args[base];

    ftp = new FTPClient();
    ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));

    try {
        int reply;
        ftp.connect(server);
        System.out.println("Connected to " + server + ".");

        // After connection attempt, you should check the reply code to verify
        // success.
        reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            System.err.println("FTP server refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server.");
        e.printStackTrace();
        System.exit(1);
    }

    __main: try {
        if (!ftp.login(username, password)) {
            ftp.logout();
            error = true;
            break __main;
        }

        System.out.println("Remote system is " + ftp.getSystemName());

        if (binaryTransfer)
            ftp.setFileType(FTP.BINARY_FILE_TYPE);

        // Use passive mode as default because most of us are
        // behind firewalls these days.
        ftp.enterLocalPassiveMode();

        if (storeFile) {
            InputStream input;

            input = new FileInputStream(local);

            ftp.storeFile(remote, input);

            input.close();
        } else {
            OutputStream output;

            output = new FileOutputStream(local);

            ftp.retrieveFile(remote, output);

            output.close();
        }

        ftp.logout();
    } catch (FTPConnectionClosedException e) {
        error = true;
        System.err.println("Server closed connection.");
        e.printStackTrace();
    } catch (IOException e) {
        error = true;
        e.printStackTrace();
    } finally {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
    }

    System.exit(error ? 1 : 0);
}

---

From source file:aplicacion.sistema.version.logic.ftp.java

public static final void main(String[] args) {
    int base = 0;
    boolean storeFile = false, binaryTransfer = false, error = false;
    String server, username, password, remote, local;
    server = "gisbertrepuestos.com.ar";
    username = "gisbertrepuestos.com.ar";
    password = "ipsilon@1982";
    remote = "beta/beta-patch.msp";
    local = "c:/beta-patch-from-ftp.msp";
    FTPClient ftp;// w w w .ja v a  2 s. c o  m
    /*
    for (base = 0; base < args.length; base++)
    {
    if (args[base].startsWith("-s"))
        storeFile = true;
    else if (args[base].startsWith("-b"))
        binaryTransfer = true;
    else
        break;
    }
            
    if ((args.length - base) != 5)
    {
    System.err.println(USAGE);
    System.exit(1);
    }
            
    server = args[base++];
    username = args[base++];
    password = args[base++];
    remote = args[base++];
    local = args[base];
    */
    ftp = new FTPClient();
    ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));

    try {
        int reply;
        ftp.connect(server);
        System.out.println("Connected to " + server + ".");

        // After connection attempt, you should check the reply code to verify
        // success.
        reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            System.err.println("FTP server refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server.");
        e.printStackTrace();
        System.exit(1);
    }

    __main: try {
        if (!ftp.login(username, password)) {
            ftp.logout();
            error = true;
            break __main;
        }

        System.out.println("Remote system is " + ftp.getSystemName());

        if (binaryTransfer)
            ftp.setFileType(FTP.BINARY_FILE_TYPE);

        // Use passive mode as default because most of us are
        // behind firewalls these days.
        ftp.enterLocalPassiveMode();

        if (storeFile) {
            InputStream input;

            input = new FileInputStream(local);

            ftp.storeFile(remote, input);

            input.close();
        } else {
            OutputStream output;

            output = new FileOutputStream(local);

            ftp.retrieveFile(remote, output);

            output.close();
        }

        ftp.logout();
    } catch (FTPConnectionClosedException e) {
        error = true;
        System.err.println("Server closed connection.");
        e.printStackTrace();
    } catch (IOException e) {
        error = true;
        e.printStackTrace();
    } finally {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
    }

    System.exit(error ? 1 : 0);
}

---

From source file:com.xiangzhurui.util.ftp.ServerToServerFTP.java

public static void main(String[] args) {
    String server1, username1, password1, file1;
    String server2, username2, password2, file2;
    String[] parts;/*  w ww .  j  a  v a2 s  .c o  m*/
    int port1 = 0, port2 = 0;
    FTPClient ftp1, ftp2;
    ProtocolCommandListener listener;

    if (args.length < 8) {
        System.err.println(
                "Usage: com.xzr.practice.util.ftp <host1> <user1> <pass1> <file1> <host2> <user2> <pass2> <file2>");
        System.exit(1);
    }

    server1 = args[0];
    parts = server1.split(":");
    if (parts.length == 2) {
        server1 = parts[0];
        port1 = Integer.parseInt(parts[1]);
    }
    username1 = args[1];
    password1 = args[2];
    file1 = args[3];
    server2 = args[4];
    parts = server2.split(":");
    if (parts.length == 2) {
        server2 = parts[0];
        port2 = Integer.parseInt(parts[1]);
    }
    username2 = args[5];
    password2 = args[6];
    file2 = args[7];

    listener = new PrintCommandListener(new PrintWriter(System.out), true);
    ftp1 = new FTPClient();
    ftp1.addProtocolCommandListener(listener);
    ftp2 = new FTPClient();
    ftp2.addProtocolCommandListener(listener);

    try {
        int reply;
        if (port1 > 0) {
            ftp1.connect(server1, port1);
        } else {
            ftp1.connect(server1);
        }
        System.out.println("Connected to " + server1 + ".");

        reply = ftp1.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp1.disconnect();
            System.err.println("FTP server1 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp1.isConnected()) {
            try {
                ftp1.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server1.");
        e.printStackTrace();
        System.exit(1);
    }

    try {
        int reply;
        if (port2 > 0) {
            ftp2.connect(server2, port2);
        } else {
            ftp2.connect(server2);
        }
        System.out.println("Connected to " + server2 + ".");

        reply = ftp2.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp2.disconnect();
            System.err.println("FTP server2 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp2.isConnected()) {
            try {
                ftp2.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server2.");
        e.printStackTrace();
        System.exit(1);
    }

    __main: try {
        if (!ftp1.login(username1, password1)) {
            System.err.println("Could not login to " + server1);
            break __main;
        }

        if (!ftp2.login(username2, password2)) {
            System.err.println("Could not login to " + server2);
            break __main;
        }

        // Let's just assume success for now.
        ftp2.enterRemotePassiveMode();

        ftp1.enterRemoteActiveMode(InetAddress.getByName(ftp2.getPassiveHost()), ftp2.getPassivePort());

        // Although you would think the store command should be sent to
        // server2
        // first, in reality, com.xzr.practice.util.ftp servers like wu-ftpd start accepting data
        // connections right after entering passive mode. Additionally, they
        // don't even send the positive preliminary reply until after the
        // transfer is completed (in the case of passive mode transfers).
        // Therefore, calling store first would hang waiting for a
        // preliminary
        // reply.
        if (ftp1.remoteRetrieve(file1) && ftp2.remoteStoreUnique(file2)) {
            // if(ftp1.remoteRetrieve(file1) && ftp2.remoteStore(file2)) {
            // We have to fetch the positive completion reply.
            ftp1.completePendingCommand();
            ftp2.completePendingCommand();
        } else {
            System.err.println("Couldn't initiate transfer.  Check that filenames are valid.");
            break __main;
        }

    } catch (IOException e) {
        e.printStackTrace();
        System.exit(1);
    } finally {
        try {
            if (ftp1.isConnected()) {
                ftp1.logout();
                ftp1.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }

        try {
            if (ftp2.isConnected()) {
                ftp2.logout();
                ftp2.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }
    }
}

---

From source file:dataflow.examples.TransferFiles.java

public static void main(String[] args) throws IOException, URISyntaxException {
    Options options = PipelineOptionsFactory.fromArgs(args).withValidation().as(Options.class);
    List<FilePair> filePairs = new ArrayList<FilePair>();

    URI ftpInput = new URI(options.getInput());

    FTPClient ftp = new FTPClient();
    ftp.connect(ftpInput.getHost());//from  ww  w.jav  a 2 s .  c om

    // After connection attempt, you should check the reply code to verify
    // success.
    int reply = ftp.getReplyCode();

    if (!FTPReply.isPositiveCompletion(reply)) {
        ftp.disconnect();
        logger.error("FTP server refused connection.");
        throw new RuntimeException("FTP server refused connection.");
    }

    ftp.login("anonymous", "someemail@gmail.com");

    String ftpPath = ftpInput.getPath();
    FTPFile[] files = ftp.listFiles(ftpPath);

    URI gcsUri = null;
    if (options.getOutput().endsWith("/")) {
        gcsUri = new URI(options.getOutput());
    } else {
        gcsUri = new URI(options.getOutput() + "/");
    }

    for (FTPFile f : files) {
        logger.info("File: " + f.getName());
        FilePair p = new FilePair();
        p.server = ftpInput.getHost();
        p.ftpPath = f.getName();

        // URI ftpURI = new URI("ftp", p.server, f.getName(), "");
        p.gcsPath = gcsUri.resolve(FilenameUtils.getName(f.getName())).toString();

        filePairs.add(p);
    }

    ftp.logout();

    Pipeline p = Pipeline.create(options);
    PCollection<FilePair> inputs = p.apply(Create.of(filePairs));
    inputs.apply(ParDo.of(new FTPToGCS()).named("CopyToGCS"))
            .apply(AvroIO.Write.withSchema(FilePair.class).to(options.getOutput()));
    p.run();
}

---

From source file:ServeurFTP.java

public static void main(String[] args) {
    String server1, username1, password1, file1;
    String server2, username2, password2, file2;
    String[] parts;/* w  w  w . j a  v a2s.  c o m*/
    int port1 = 0, port2 = 0;
    FTPClient ftp1, ftp2;
    ProtocolCommandListener listener;

    if (args.length < 8) {
        System.err.println("Usage: ftp <host1> <user1> <pass1> <file1> <host2> <user2> <pass2> <file2>");
        System.exit(1);
    }

    server1 = args[0];
    parts = server1.split(":");
    if (parts.length == 2) {
        server1 = parts[0];
        port1 = Integer.parseInt(parts[1]);
    }
    username1 = args[1];
    password1 = args[2];
    file1 = args[3];
    server2 = args[4];
    parts = server2.split(":");
    if (parts.length == 2) {
        server2 = parts[0];
        port2 = Integer.parseInt(parts[1]);
    }
    username2 = args[5];
    password2 = args[6];
    file2 = args[7];

    listener = new PrintCommandListener(new PrintWriter(System.out), true);
    ftp1 = new FTPClient();
    ftp1.addProtocolCommandListener(listener);
    ftp2 = new FTPClient();
    ftp2.addProtocolCommandListener(listener);

    try {
        int reply;
        if (port1 > 0) {
            ftp1.connect(server1, port1);
        } else {
            ftp1.connect(server1);
        }
        System.out.println("Connected to " + server1 + ".");

        reply = ftp1.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp1.disconnect();
            System.err.println("FTP server1 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp1.isConnected()) {
            try {
                ftp1.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server1.");
        e.printStackTrace();
        System.exit(1);
    }

    try {
        int reply;
        if (port2 > 0) {
            ftp2.connect(server2, port2);
        } else {
            ftp2.connect(server2);
        }
        System.out.println("Connected to " + server2 + ".");

        reply = ftp2.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp2.disconnect();
            System.err.println("FTP server2 refused connection.");
            System.exit(1);
        }
    } catch (IOException e) {
        if (ftp2.isConnected()) {
            try {
                ftp2.disconnect();
            } catch (IOException f) {
                // do nothing
            }
        }
        System.err.println("Could not connect to server2.");
        e.printStackTrace();
        System.exit(1);
    }

    __main: try {
        if (!ftp1.login(username1, password1)) {
            System.err.println("Could not login to " + server1);
            break __main;
        }

        if (!ftp2.login(username2, password2)) {
            System.err.println("Could not login to " + server2);
            break __main;
        }

        // Let's just assume success for now.
        ftp2.enterRemotePassiveMode();

        ftp1.enterRemoteActiveMode(InetAddress.getByName(ftp2.getPassiveHost()), ftp2.getPassivePort());

        // Although you would think the store command should be sent to server2
        // first, in reality, ftp servers like wu-ftpd start accepting data
        // connections right after entering passive mode.  Additionally, they
        // don't even send the positive preliminary reply until after the
        // transfer is completed (in the case of passive mode transfers).
        // Therefore, calling store first would hang waiting for a preliminary
        // reply.
        if (ftp1.remoteRetrieve(file1) && ftp2.remoteStoreUnique(file2)) {
            //      if(ftp1.remoteRetrieve(file1) && ftp2.remoteStore(file2)) {
            // We have to fetch the positive completion reply.
            ftp1.completePendingCommand();
            ftp2.completePendingCommand();
        } else {
            System.err.println("Couldn't initiate transfer.  Check that filenames are valid.");
            break __main;
        }

    } catch (IOException e) {
        e.printStackTrace();
        System.exit(1);
    } finally {
        try {
            if (ftp1.isConnected()) {
                ftp1.logout();
                ftp1.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }

        try {
            if (ftp2.isConnected()) {
                ftp2.logout();
                ftp2.disconnect();
            }
        } catch (IOException e) {
            // do nothing
        }
    }
}

---

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