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

Introduction

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

Prototype

public boolean retrieveFile(String remote, OutputStream local) throws IOException 

Source Link

Document

Retrieves a named file from the server and writes it to the given OutputStream.

Usage

From source file:com.kcs.core.utilities.FtpUtil.java

public static boolean getFile(String hostname, int port, String username, String password,
        String remoteFileName, String localFileName) throws Exception {
    FTPClient ftp = null;
    boolean result = false;
    try {//w w w .  j a  v  a 2  s .c  o  m
        System.out.println("File has been start downloaded.");
        ftp = FtpUtil.openFtpConnect(hostname, port, username, password);
        if (null != ftp && ftp.isConnected()) {
            File downloadFile = new File(localFileName);
            if (!FtpUtil.checkFileExists(remoteFileName, ftp)) {
                System.out.println("File not found in server.");
                throw new Exception("File not found in server.");
            }
            OutputStream outputStream = new BufferedOutputStream(new FileOutputStream(downloadFile));
            result = ftp.retrieveFile(remoteFileName, outputStream);
            outputStream.close();
        }
        System.out.println("File [" + remoteFileName + "] has been downloaded Complete.");
    } catch (Exception e) {
        e.printStackTrace();
        throw new Exception("Error : " + e.getMessage());
    } finally {
        FtpUtil.closeFtpServer(ftp);
    }
    return result;
}

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From source file:joshuatee.wx.UtilityFTP.java

public static void GetNids(Context c, String url, String path) {

    try {/* ww  w.  j  av a 2  s .  c  om*/
        FTPClient ftp = new FTPClient();

        //String url = "tgftp.nws.noaa.gov";
        //String user = "ftp";
        //String pass = "anonymous";

        ftp.connect(url);

        if (!ftp.login("ftp", "anonymous")) {
            ftp.logout();
        }

        ftp.setFileType(FTP.BINARY_FILE_TYPE);
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
        }

        ftp.enterLocalPassiveMode();
        ftp.changeWorkingDirectory(path);
        //reply = ftp.getReplyCode();
        //String fn = "sn.last";

        FileOutputStream fos = c.openFileOutput("nids", Context.MODE_PRIVATE);
        ftp.retrieveFile("sn.last", fos);
        //reply = ftp.getReplyCode();
        fos.close();

        ftp.logout();
        ftp.disconnect();

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

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From source file:moskitt4me.repositoryClient.core.util.RepositoryClientUtil.java

public static void downloadFragment(RepositoryLocation location, String fileName, String folder)
        throws IOException {

    FTPClient client = RepositoryClientUtil.connect(location, false);

    if (client != null) {

        //Download the file

        String destination = folder + "/" + fileName;
        FileOutputStream fos = new FileOutputStream(destination);
        client.retrieveFile(fileName, fos);
        fos.close();//from  w w  w. j  a v a2  s  .  c om

        //Disconnect the client

        RepositoryClientUtil.disconnect(client);
    }
}

---

From source file:cn.zhuqi.mavenssh.web.util.test.FtpTest.java

/**
 * Description: FTP?//w  w w . ja  v  a  2  s .com
 *
 * @Version1.0
 * @param url FTP?hostname
 * @param port FTP??
 * @param username FTP?
 * @param password FTP?
 * @param remotePath FTP?
 * @param fileName ???
 * @param localPath ??
 * @return
 */
public static boolean downloadFile(String url, int port, String username, String password, String remotePath,
        String fileName, String localPath) {
    boolean success = false;
    FTPClient ftp = new FTPClient();
    try {
        int reply;
        // FTP?
        if (port > -1) {
            ftp.connect(url, port);
        } else {
            ftp.connect(url);
        }
        ftp.login(username, password);//
        ftp.setFileType(FTPClient.BINARY_FILE_TYPE);
        reply = ftp.getReplyCode();
        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.disconnect();
            return success;
        }
        ftp.changeWorkingDirectory(remotePath);//FTP?
        FTPFile[] fs = ftp.listFiles();
        for (FTPFile ff : fs) {
            if (ff.getName().equals(fileName)) {
                File localFile = new File(localPath + "/" + ff.getName());
                OutputStream is = new FileOutputStream(localFile);
                ftp.retrieveFile(ff.getName(), is);
                is.close();
            }
        }

        ftp.logout();
        success = true;
    } catch (IOException e) {
    } finally {
        if (ftp.isConnected()) {
            try {
                ftp.disconnect();
            } catch (IOException e) {
            }
        }
    }
    return success;
}

---

From source file:AIR.Common.Web.FileFtpHandler.java

/**
 * Makes FTP call to the provided URI and retrieves contents
 *  /* w w  w .  j  a  v a  2  s  .  c  o m*/
 * @param uri
 * @return ByteArrayInputStream
 * @throws FtpResourceException
 */
public static byte[] getBytes(URI uri) throws FtpResourceException {
    try {
        FTPClient ftp = new FTPClient();
        String[] credentialsAndHost = uri.getAuthority().split("@");
        String host = credentialsAndHost[1];
        String[] credentials = credentialsAndHost[0].split(":");

        ftp.connect(host);
        ftp.enterLocalPassiveMode();
        if (!ftp.login(credentials[0], credentials[1])) {
            ftp.logout();
            ftp.disconnect();
            throw new RuntimeException("FTP Authentication Failure");
        }
        int reply = ftp.getReplyCode();
        if (!FTPReply.isPositiveCompletion(reply)) {
            ftp.logout();
            ftp.disconnect();
            throw new RuntimeException("FTP No reponse from server");
        }
        ftp.setFileType(FTPClient.BINARY_FILE_TYPE);

        ByteArrayOutputStream output = new ByteArrayOutputStream();
        ftp.retrieveFile(uri.getPath(), output);
        output.close();
        ftp.logout();
        ftp.disconnect();
        return output.toByteArray();

    } catch (IOException ex) {
        throw new FtpResourceException(ex);
    }
}

---

From source file:edu.tum.cs.ias.knowrob.utils.ResourceRetriever.java

/**
 * Retrieve a file to a temporary path. This temporary path will be returned. Valid protocol
 * types: ftp, http, package or local file If a file has already be downloaded (the file is
 * existing in tmp directory) it will not be redownloaded again. Simply the path to this file
 * will be returned.//from w w  w.ja  va 2 s.co m
 * 
 * @param url
 *            URL to retrieve
 * @param checkAlreadyRetrieved
 *            if false, always download the file and ignore, if it is already existing
 * @return NULL on error. On success the path to the file is returned.
 */
public static File retrieve(String url, boolean checkAlreadyRetrieved) {
    if (url.indexOf("://") <= 0) {
        // Is local file
        return new File(url);
    }
    int start = url.indexOf('/') + 2;
    int end = url.indexOf('/', start);
    String serverName = url.substring(start, end);
    if (url.startsWith("package://")) {
        String filePath = url.substring(end + 1);
        String pkgPath = findPackage(serverName);
        if (pkgPath == null)
            return null;
        return new File(pkgPath, filePath);
    } else if (url.startsWith("http://")) {

        OutputStream out = null;
        URLConnection conn = null;
        InputStream in = null;
        String filename = url.substring(url.lastIndexOf('/') + 1);

        File tmpPath = getTmpName(url, filename);

        if (checkAlreadyRetrieved && tmpPath.exists()) {
            return tmpPath;
        }

        try {
            // Get the URL
            URL urlClass = new URL(url);
            // Open an output stream to the destination file on our local filesystem
            out = new BufferedOutputStream(new FileOutputStream(tmpPath));
            conn = urlClass.openConnection();
            in = conn.getInputStream();

            // Get the data
            byte[] buffer = new byte[1024];
            int numRead;
            while ((numRead = in.read(buffer)) != -1) {
                out.write(buffer, 0, numRead);
            }
            // Done! Just clean up and get out
        } catch (Exception exception) {
            exception.printStackTrace();
        } finally {
            try {
                if (in != null) {
                    in.close();
                }
                if (out != null) {
                    out.close();
                }
            } catch (IOException ioe) {
                // Ignore if stream not possible to close
            }
        }
        return tmpPath;
    } else if (url.startsWith("ftp://")) {
        FTPClient client = new FTPClient();
        OutputStream outStream = null;
        String filename = url.substring(url.lastIndexOf('/') + 1);

        File tmpPath = getTmpName(url, filename);

        if (checkAlreadyRetrieved && tmpPath.exists()) {
            System.out.println("Already retrieved: " + url + " to " + tmpPath.getAbsolutePath());
            return tmpPath;
        }

        try {
            // Connect to the FTP server as anonymous
            client.connect(serverName);
            client.login("anonymous", "knowrob@example.com");
            String remoteFile = url.substring(end);
            // Write the contents of the remote file to a FileOutputStream
            outStream = new FileOutputStream(tmpPath);
            client.retrieveFile(remoteFile, outStream);

        } catch (IOException ioe) {
            System.out.println("ResourceRetriever: Error communicating with FTP server: " + serverName + "\n"
                    + ioe.getMessage());
        } finally {
            try {
                outStream.close();
            } catch (IOException e1) {
                // Ignore if stream not possible to close
            }
            try {
                client.disconnect();
            } catch (IOException e) {
                System.out.println("ResourceRetriever: Problem disconnecting from FTP server: " + serverName
                        + "\n" + e.getMessage());
            }
        }
        return tmpPath;
    }
    return null;
}

---

From source file:com.ephesoft.dcma.util.FTPUtil.java

/**
 * API to download files from an arbitrary directory hierarchy on the remote ftp server
 * /*from  www . j  ava2  s.  co  m*/
 * @param client {@link FTPClient}
 * @param ftpDirectory{{@link String} the directory tree only delimited with / chars. No file name!
 * @param destDirectoryPath {@link String} the path where file will be downloaded.
 * @throws Exception
 */
public static void retrieveFiles(final FTPClient client, final String ftpDirectory,
        final String destDirectoryPath) throws IOException {
    boolean dirExists = true;
    String[] directories = ftpDirectory.split(DIRECTORY_SEPARATOR);
    for (String dir : directories) {
        if (!dir.isEmpty()) {
            if (dirExists) {
                dirExists = client.changeWorkingDirectory(dir);
            }
        }
    }
    FTPFile[] fileList = client.listFiles();
    if (fileList != null && fileList.length > 0) {
        String outputFilePath;
        FileOutputStream fileOutputStream;
        for (FTPFile file : fileList) {
            outputFilePath = EphesoftStringUtil.concatenate(destDirectoryPath, File.separator, file.getName());
            fileOutputStream = new FileOutputStream(outputFilePath);
            client.retrieveFile(file.getName(), fileOutputStream);
            fileOutputStream.close();
        }
    }
}

---

From source file:de.l3s.dlg.ncbikraken.ftp.NcbiFTPClient.java

public static void getMedline(MedlineFileType type) {
    FileOutputStream out = null;/*from www .  ja  v a2s.  c  om*/
    FTPClient ftp = new FTPClient();
    try {
        // Connection String
        LOGGER.info("Connecting to FTP server " + SERVER_NAME);
        ftp.connect(SERVER_NAME);
        ftp.login("anonymous", "");
        ftp.cwd(BASELINE_PATH);
        ftp.cwd(type.getServerPath());

        try {
            ftp.pasv();
        } catch (IOException e) {
            LOGGER.error(
                    "Can not access the passive mode. Maybe a problem with your (Windows) firewall. Just try to run as administrator: \nnetsh advfirewall set global StatefulFTP disable");
            return;
        }

        for (FTPFile file : ftp.listFiles()) {
            if (file.isFile()) {
                File meshF = new File(file.getName());
                LOGGER.debug("Downloading file: " + SERVER_NAME + ":" + BASELINE_PATH + "/"
                        + type.getServerPath() + "/" + meshF.getName());
                out = new FileOutputStream(Configuration.INSTANCE.getMedlineDir() + File.separator + meshF);
                ftp.retrieveFile(meshF.getName(), out);
                out.flush();
                out.close();
            }
        }

    } catch (IOException ioe) {
        LOGGER.error(ioe.getMessage());

    } finally {
        IOUtils.closeQuietly(out);
        try {
            ftp.disconnect();
        } catch (IOException e) {
            LOGGER.error(e.getMessage());
        }
    }

}

---

From source file:moskitt4me.repositoryClient.core.util.RepositoryClientUtil.java

public static String downloadFragment(RepositoryLocation location, String fileName) throws IOException {

    FTPClient client = RepositoryClientUtil.connect(location, false);
    String tempDir = "";

    if (client != null) {

        String eclipseInstallationDirectory = Platform.getInstallLocation().getURL().getPath();

        tempDir = RepositoryClientUtil.createFolder(eclipseInstallationDirectory + "tmp", 0);

        //Download the file

        String destination = tempDir + "/" + fileName;
        FileOutputStream fos = new FileOutputStream(destination);
        client.retrieveFile(fileName, fos);
        fos.close();/*w ww .  j a  v  a  2  s  . com*/

        //Disconnect the client

        RepositoryClientUtil.disconnect(client);
    }

    return tempDir;
}

---

From source file:de.cismet.cids.custom.utils.formsolutions.FormSolutionFtpClient.java

/**
 * DOCUMENT ME!//w  w  w. j a va  2 s. com
 *
 * @param   destinationPath  DOCUMENT ME!
 * @param   out              DOCUMENT ME!
 *
 * @throws  Exception  DOCUMENT ME!
 */
public void download(final String destinationPath, final OutputStream out) throws Exception {
    final FTPClient connectedFtpClient = getConnectedFTPClient();
    connectedFtpClient.enterLocalPassiveMode();
    connectedFtpClient.setFileType(BINARY_FILE_TYPE);
    if (!connectedFtpClient.retrieveFile(destinationPath, out)) {
        throw new Exception("file " + destinationPath + " not found");
    }
}

---

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