Java Code Examples for org.apache.commons.net.ftp.FTPClient#getReplyCode()

public PooledObject<FTPClient> makeObject() throws Exception {
    FTPClient ftpClient = new FTPClient();
    ftpClient.setConnectTimeout(config.getClientTimeout());
    ftpClient.connect(config.getHost(), config.getPort());
    int reply = ftpClient.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftpClient.disconnect();
        logger.warn("FTPServer refused connection");
        return null;
    }
    boolean result = ftpClient.login(config.getUsername(), config.getPassword());
    if (!result) {
        throw new ConnectException("ftp登陆失败:" + config.getUsername() + "/password:" + config.getPassword() + "@" + config.getHost());
    }
    ftpClient.setFileType(config.getTransferFileType());
    ftpClient.setBufferSize(1024);
    ftpClient.setControlEncoding(config.getEncoding());
    if (config.isPassiveMode()) {
        ftpClient.enterLocalPassiveMode();
    }
    return new DefaultPooledObject<>(ftpClient);

}
 

/**
 * Upload a single file to FTP server with the provided FTP client object.
 *
 * @param sourceFilePath
 * @param targetFilePath
 * @param logPrefix
 * @throws IOException
 */
private void uploadFile(final FTPClient ftpClient, final String sourceFilePath, final String targetFilePath,
                        final String logPrefix) throws IOException {
    logger.quiet(String.format(UPLOAD_FILE, logPrefix, sourceFilePath, targetFilePath));
    final File sourceFile = new File(sourceFilePath);
    try (final InputStream is = new FileInputStream(sourceFile)) {
        ftpClient.changeWorkingDirectory(targetFilePath);
        ftpClient.storeFile(sourceFile.getName(), is);

        final int replyCode = ftpClient.getReplyCode();
        final String replyMessage = ftpClient.getReplyString();
        if (isCommandFailed(replyCode)) {
            logger.error(String.format(UPLOAD_FILE_REPLY, logPrefix, replyMessage));
            throw new IOException("Failed to upload file: " + sourceFilePath);
        } else {
            logger.quiet(String.format(UPLOAD_FILE_REPLY, logPrefix, replyMessage));
        }
    }
}
 

/**
 * Upload a single file to FTP server with the provided FTP client object.
 *
 * @param sourceFilePath
 * @param targetFilePath
 * @param logPrefix
 * @throws IOException
 */
protected void uploadFile(final FTPClient ftpClient, final String sourceFilePath, final String targetFilePath,
                          final String logPrefix) throws IOException {
    logger.quiet(String.format(UPLOAD_FILE, logPrefix, sourceFilePath, targetFilePath));
    final File sourceFile = new File(sourceFilePath);
    try (final InputStream is = new FileInputStream(sourceFile)) {
        ftpClient.changeWorkingDirectory(targetFilePath);
        ftpClient.storeFile(sourceFile.getName(), is);

        final int replyCode = ftpClient.getReplyCode();
        final String replyMessage = ftpClient.getReplyString();
        if (isCommandFailed(replyCode)) {
            logger.error(String.format(UPLOAD_FILE_REPLY, logPrefix, replyMessage));
            throw new IOException("Failed to upload file: " + sourceFilePath);
        } else {
            logger.quiet(String.format(UPLOAD_FILE_REPLY, logPrefix, replyMessage));
        }
    }
}
 

@Override
public WritableByteChannel append() throws IOException {
	FTPClient ftp = null;
	try {
		ftp = connect(uri);
		Info info = info(uri, ftp);
		if ((info != null) && info.isDirectory()) {
			throw new IOException(MessageFormat.format(FileOperationMessages.getString("IOperationHandler.exists_not_file"), uri)); //$NON-NLS-1$
		}
		OutputStream os = ftp.appendFileStream(getPath(uri));
		if (os == null) {
			throw new IOException(ftp.getReplyString());
		}
		int replyCode = ftp.getReplyCode();
		if (!FTPReply.isPositiveIntermediate(replyCode) && !FTPReply.isPositivePreliminary(replyCode)) {
			os.close();
			throw new IOException(ftp.getReplyString());
		}
		return Channels.newChannel(new FTPOutputStream(os, ftp));
	} catch (Throwable t) {
		disconnect(ftp);
		if (t instanceof IOException) {
			throw (IOException) t;
		} else {
			throw new IOException(t);
		}
	}
}
 

public static FTPClient connect(String host, int port, String username, String password, String controlEncoding) throws IOException {
    FTPClient ftpClient = new FTPClient();
    ftpClient.connect(host, port);
    if (!StringUtils.isEmpty(username) && !StringUtils.isEmpty(password)) {
        ftpClient.login(username, password);
    }
    int reply = ftpClient.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftpClient.disconnect();
    }
    ftpClient.setControlEncoding(controlEncoding);
    ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
    return ftpClient;
}
 

/** 
 * Description: 从FTP服务器下载文件 
 * @param host FTP服务器hostname 
 * @param port FTP服务器端口 
 * @param username FTP登录账号 
 * @param password FTP登录密码 
 * @param remotePath FTP服务器上的相对路径 
 * @param fileName 要下载的文件名 
 * @param localPath 下载后保存到本地的路径 
 * @return 
 */
public static boolean downloadFile(String host, int port, String username, String password, String remotePath, String fileName, String localPath) {
	boolean result = false;
	FTPClient ftp = new FTPClient();
	try {
		int reply;
		ftp.connect(host, port);
		// 如果采用默认端口，可以使用ftp.connect(host)的方式直接连接FTP服务器
		ftp.login(username, password);// 登录
		reply = ftp.getReplyCode();
		if (!FTPReply.isPositiveCompletion(reply)) {
			ftp.disconnect();
			return result;
		}
		ftp.changeWorkingDirectory(remotePath);// 转移到FTP服务器目录
		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();
		result = true;
	} catch (IOException e) {
		e.printStackTrace();
	} finally {
		if (ftp.isConnected()) {
			try {
				ftp.disconnect();
			} catch (IOException ioe) {
			}
		}
	}
	return result;
}
 

public FTPDownloader(String host, String user, String pwd) throws Exception {
    ftp = new FTPClient();
    ftp.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
    int reply;
    ftp.connect(host);
    reply = ftp.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftp.disconnect();
        throw new Exception("Exception in connecting to FTP Server");
    }
    ftp.login(user, pwd);
    ftp.setFileType(FTP.BINARY_FILE_TYPE);
    ftp.enterLocalPassiveMode();
}
 

protected FTPClient connect(URI uri) throws IOException {
		FTPClient ftp = new FTPClient();
//		FTPClientConfig config = new FTPClientConfig();
//		config.setServerTimeZoneId("GMT+0");
//		ftp.configure(config);
		ftp.setListHiddenFiles(true);
		UserInfo userInfo = UserInfo.fromURI(uri);
		try {
			int port = uri.getPort();
			if (port < 0) {
				port = 21;
			}
			ftp.connect(uri.getHost(), port);
			if (!ftp.login(userInfo.getUser(), userInfo.getPassword())) {
	            ftp.logout();
	            throw new IOException(FileOperationMessages.getString("FTPOperationHandler.authentication_failed")); //$NON-NLS-1$
	        }
			ftp.enterLocalPassiveMode();
			
			int reply = ftp.getReplyCode();
	        if (!FTPReply.isPositiveCompletion(reply)) {
	        	throw new IOException(FileOperationMessages.getString("FTPOperationHandler.connection_failed")); //$NON-NLS-1$
	        }
	        return ftp;
		} catch (IOException ioe) {
			disconnect(ftp);
			throw new IOException(FileOperationMessages.getString("FTPOperationHandler.connection_failed"), ioe); //$NON-NLS-1$
		}
	}
 

private void login(Credential credential, FTPClient ftp) throws XenonException {
    try {
        loginWithCredentialOrDefault(ftp, credential);
        int replyCode = ftp.getReplyCode();
        verifyLoginSuccess(replyCode);
    } catch (XenonException | IOException e) {
        throw new XenonException(getName(), "Failed to login", e);
    }
}
 

/**
 * Description: 向FTP服务器上传文件
 * @Version1.0 Jul 27, 2008 4:31:09 PM by 崔红保（[email protected]）创建
 * @param url FTP服务器hostname
 * @param port FTP服务器端口
 * @param username FTP登录账号
 * @param password FTP登录密码
 * @param path FTP服务器保存目录
 * @param filename 上传到FTP服务器上的文件名
 * @param input 输入流
 * @return 成功返回true，否则返回false
 */
public static boolean uploadFile(String url,int port,String username, String password, String path, String filename, InputStream input) {
	boolean success = false;
	FTPClient ftp = new FTPClient();
	try {
		int reply;
		ftp.connect(url, port);//连接FTP服务器
		//如果采用默认端口，可以使用ftp.connect(url)的方式直接连接FTP服务器
		ftp.login(username, password);//登录
		reply = ftp.getReplyCode();
		if (!FTPReply.isPositiveCompletion(reply)) {
			ftp.disconnect();
			return success;
		}
		ftp.changeWorkingDirectory(path);
		ftp.storeFile(filename, input);			
		
		input.close();
		ftp.logout();
		success = true;
	} catch (IOException e) {
		e.printStackTrace();
	} finally {
		if (ftp.isConnected()) {
			try {
				ftp.disconnect();
			} catch (IOException ioe) {
			}
		}
	}
	return success;
}
 

void open() throws IOException {
    ftp = new FTPClient();

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

    ftp.connect(server, port);
    int reply = ftp.getReplyCode();
    if (!FTPReply.isPositiveCompletion(reply)) {
        ftp.disconnect();
        throw new IOException("Exception in connecting to FTP Server");
    }

    ftp.login(user, password);
}
 

/**
     * Test CWD for FTP server
     * 
     * @throws Exception
     */
    public void testCWD() throws Exception
    {
        logger.debug("Start testCWD");
        
        FTPClient ftp = connectClient();

        try
        {
            int reply = ftp.getReplyCode();

            if (!FTPReply.isPositiveCompletion(reply))
            {
                fail("FTP server refused connection.");
            }
        
            boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
            assertTrue("admin login successful", login);
            
            FTPFile[] files = ftp.listFiles();
            reply = ftp.getReplyCode();
            assertTrue(FTPReply.isPositiveCompletion(reply));

            assertTrue(files.length == 1);
            
            boolean foundAlfresco=false;
            for(FTPFile file : files)
            {
                logger.debug("file name=" + file.getName());
                assertTrue(file.isDirectory());
                
                if(file.getName().equalsIgnoreCase("Alfresco"))
                {
                    foundAlfresco=true;
                }
            }
            assertTrue(foundAlfresco);
            
            // Change to Alfresco Dir that we know exists
            reply = ftp.cwd("/Alfresco");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // relative path with space char
            reply = ftp.cwd("Data Dictionary");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // non existant absolute
            reply = ftp.cwd("/Garbage");
            assertTrue(FTPReply.isNegativePermanent(reply));
            
            reply = ftp.cwd("/Alfresco/User Homes");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            
            // Wild card
            reply = ftp.cwd("/Alfresco/User*Homes");
            assertTrue("unable to change to /Alfresco User*Homes/", FTPReply.isPositiveCompletion(reply));
            
//            // Single char pattern match
//            reply = ftp.cwd("/Alfre?co");
//            assertTrue("Unable to match single char /Alfre?co", FTPReply.isPositiveCompletion(reply));
            
            // two level folder
            reply = ftp.cwd("/Alfresco/Data Dictionary");
            assertTrue("unable to change to /Alfresco/Data Dictionary", FTPReply.isPositiveCompletion(reply));
            
            // go up one
            reply = ftp.cwd("..");
            assertTrue("unable to change to ..", FTPReply.isPositiveCompletion(reply));
            
            reply = ftp.pwd();
            ftp.getStatus();
            
            assertTrue("unable to get status", FTPReply.isPositiveCompletion(reply));
            
            // check we are at the correct point in the tree
            reply = ftp.cwd("Data Dictionary");
            assertTrue(FTPReply.isPositiveCompletion(reply));
            

        } 
        finally
        {
            ftp.disconnect();
        }    

    }
 

/**
 * Test CRUD for FTP server
 *
 * @throws Exception
 */
public void testCRUD() throws Exception
{
    final String PATH1 = "FTPServerTest";
    final String PATH2 = "Second part";
    
    logger.debug("Start testFTPCRUD");
    
    FTPClient ftp = connectClient();

    try
    {
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply))
        {
            fail("FTP server refused connection.");
        }
    
        boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
        assertTrue("admin login successful", login);
                      
        reply = ftp.cwd("/Alfresco/User Homes");
        assertTrue(FTPReply.isPositiveCompletion(reply));
        
        // Delete the root directory in case it was left over from a previous test run
        try
        {
            ftp.removeDirectory(PATH1);
        }
        catch (IOException e)
        {
            // ignore this error
        }
        
        // make root directory
        ftp.makeDirectory(PATH1);
        ftp.cwd(PATH1);
        
        // make sub-directory in new directory
        ftp.makeDirectory(PATH2);
        ftp.cwd(PATH2);
        
        // List the files in the new directory
        FTPFile[] files = ftp.listFiles();
        assertTrue("files not empty", files.length == 0);
        
        // Create a file
        String FILE1_CONTENT_1="test file 1 content";
        String FILE1_NAME = "testFile1.txt";
        ftp.appendFile(FILE1_NAME , new ByteArrayInputStream(FILE1_CONTENT_1.getBytes("UTF-8")));
        
        // Get the new file
        FTPFile[] files2 = ftp.listFiles();
        assertTrue("files not one", files2.length == 1);
        
        InputStream is = ftp.retrieveFileStream(FILE1_NAME);
        
        String content = inputStreamToString(is);
        assertEquals("Content is not as expected", content, FILE1_CONTENT_1);
        ftp.completePendingCommand();
        
        // Update the file contents
        String FILE1_CONTENT_2="That's how it is says Pooh!";
        ftp.storeFile(FILE1_NAME , new ByteArrayInputStream(FILE1_CONTENT_2.getBytes("UTF-8")));
        
        InputStream is2 = ftp.retrieveFileStream(FILE1_NAME);
        
        String content2 = inputStreamToString(is2);
        assertEquals("Content is not as expected", FILE1_CONTENT_2, content2);
        ftp.completePendingCommand();
        
        // now delete the file we have been using.
        assertTrue (ftp.deleteFile(FILE1_NAME));
        
        // negative test - file should have gone now.
        assertFalse (ftp.deleteFile(FILE1_NAME));
        
    } 
    finally
    {
        // clean up tree if left over from previous run

        ftp.disconnect();
    }    
}
 

/**
 * @return
 * @throws IOException
 */
public SortedMap<String, CFDA> getGovCodes() throws IOException {
    Calendar calendar = dateTimeService.getCurrentCalendar();
    SortedMap<String, CFDA> govMap = new TreeMap<String, CFDA>();

    // ftp://ftp.cfda.gov/programs09187.csv
    String govURL = parameterService.getParameterValueAsString(CfdaBatchStep.class, KFSConstants.SOURCE_URL_PARAMETER);
    String fileName = StringUtils.substringAfterLast(govURL, "/");
    govURL = StringUtils.substringBeforeLast(govURL, "/");
    if (StringUtils.contains(govURL, "ftp://")) {
        govURL = StringUtils.remove(govURL, "ftp://");
    }

    // need to pull off the '20' in 2009
    String year = "" + calendar.get(Calendar.YEAR);
    year = year.substring(2, 4);
    fileName = fileName + year;

    // the last 3 numbers in the file name are the day of the year, but the files are from "yesterday"
    fileName = fileName + String.format("%03d", calendar.get(Calendar.DAY_OF_YEAR) - 1);
    fileName = fileName + ".csv";

    LOG.info("Getting government file: " + fileName + " for update");

    InputStream inputStream = null;
    FTPClient ftp = new FTPClient();
    try {
        ftp.connect(govURL);
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply)) {
            LOG.error("FTP connection to server not established.");
            throw new IOException("FTP connection to server not established.");
        }

        boolean isLoggedIn = ftp.login("anonymous", "");
        if (!isLoggedIn) {
            LOG.error("Could not login as anonymous.");
            throw new IOException("Could not login as anonymous.");
        }

        LOG.info("Successfully connected and logged in");
        ftp.enterLocalPassiveMode();
        inputStream = ftp.retrieveFileStream(fileName);
        if (inputStream != null) {
            LOG.info("reading input stream");
            InputStreamReader screenReader = new InputStreamReader(inputStream);
            BufferedReader screen = new BufferedReader(screenReader);

            CSVReader csvReader = new CSVReader(screenReader, ',', '"', 1);
            List<String[]> lines = csvReader.readAll();
            for (String[] line : lines) {
                String title = line[0];
                String number = line[1];

                CFDA cfda = new CFDA();
                cfda.setCfdaNumber(number);
                cfda.setCfdaProgramTitleName(title);

                govMap.put(number, cfda);
            }
        }

        ftp.logout();
        ftp.disconnect();
    }
    finally {
        if (ftp.isConnected()) {
            ftp.disconnect();
        }
    }

    return govMap;
}
 

/**
 * Test of rename case ALF-20584
 * 
  
 */
public void testRenameCase() throws Exception
{
    
    logger.debug("Start testRenameCase");
    
    FTPClient ftp = connectClient();

    String PATH1="testRenameCase";
    
    try
    {
        int reply = ftp.getReplyCode();

        if (!FTPReply.isPositiveCompletion(reply))
        {
            fail("FTP server refused connection.");
        }
    
        boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
        assertTrue("admin login successful", login);
                      
        reply = ftp.cwd("/Alfresco/User*Homes");
        assertTrue(FTPReply.isPositiveCompletion(reply));
                    
        // Delete the root directory in case it was left over from a previous test run
        try
        {
            ftp.removeDirectory(PATH1);
        }
        catch (IOException e)
        {
            // ignore this error
        }
        
        // make root directory for this test
        boolean success = ftp.makeDirectory(PATH1);
        assertTrue("unable to make directory:" + PATH1, success);
        
        ftp.cwd(PATH1);
        
        String FILE1_CONTENT_2="That's how it is says Pooh!";
        ftp.storeFile("FileA.txt" , new ByteArrayInputStream(FILE1_CONTENT_2.getBytes("UTF-8")));
        
        assertTrue("unable to rename", ftp.rename("FileA.txt", "FILEA.TXT"));
    
    } 
    finally
    {
        // clean up tree if left over from previous run

        ftp.disconnect();
    }    


}
 

private void checkReply(String command, FTPClient ftp) throws FTPException {
    _sessionLog.append("> ").append(command).append("\r\n");
    _sessionLog.append(ftp.getReplyString()).append("\r\n");
    _replyCode = ftp.getReplyCode();
    checkReplyCode(command, _replyCode, ftp);
}
 

private static void validatResponse(FTPClient ftpClient) {
    if (FTPReply.isNegativeTransient(ftpClient.getReplyCode()) || FTPReply.isNegativePermanent(ftpClient.getReplyCode())) {
        throw new RuntimeException("Got error response: " + ftpClient.getReplyCode());
    }
}
 

/**
 * Test for Passive Mode -> FTPCommand.Pasv command with external address functionality.
 * see MNT-16433
 */
public void testFTPConnectExternalAddressSet() throws Exception
{
    logger.debug("Start testFTPConnectExternalAddressSet");
    try
    {
        // use a highly improbable IP to tests Passive Mode -> FTPCommand.Pasv command
        // this is supposed to be the address of a proxy in front of Alfrsco FTP server
        String improbableIPAddress = "127.255.255.42";
        ftpConfigSection.setFTPExternalAddress(improbableIPAddress);
        FTPClient ftp = connectClient();
        try
        {
            int reply = ftp.getReplyCode();

            if (!FTPReply.isPositiveCompletion(reply))
            {
                fail("FTP server refused connection.");
            }
            boolean login = ftp.login(USER_ADMIN, PASSWORD_ADMIN);
            assertTrue("admin login not successful", login);

            // activate passive mode
            boolean sucess = ftp.enterRemotePassiveMode();
            assertTrue(sucess);

            assertTrue("Client should be in passive mode now", ftp.getDataConnectionMode() == FTPClient.PASSIVE_REMOTE_DATA_CONNECTION_MODE);

            reply = ftp.getReplyCode();
            //see https://www.ietf.org/rfc/rfc959.txt
            assertTrue("reply code should be 227", reply == 227);

            String replyLine = ftp.getReplyString();
            assertTrue(replyLine != null);
            String encodedImprobableIPAddress = improbableIPAddress.replaceAll("\\.", ",");
            assertTrue("Pasv command should contain the set external address encoded", replyLine.contains(encodedImprobableIPAddress));

            // now attempt to list the files and check that the command does not succeed
            FTPFile[] files = ftp.listFiles();
            assertNotNull(files);
            assertTrue("list command should not succeed", files.length == 0);

            assertTrue("The passive host should be the one set earlier.", improbableIPAddress.equals(ftp.getPassiveHost()));
        }
        finally
        {
            safeDisconnect(ftp);
        }
    }
    finally
    {
        //always revert back to default, or the other tests will fail
        ftpConfigSection.setFTPExternalAddress(null);
    }
}
 

/**
 * 获取FTP连接对象
 * @param ftpConnectAttr
 * FTP的连接配置
 * @return
 * 获取异常失败则返回null
 */
public static FTPClient getFTPClient(FTPConnectAttr ftpConnectAttr){
    if(ftpConnectAttr == null){
        log.error("FTP的连接配置不能为Null");
        return null;
    }
    if(ObjectUtil.isNull(ftpConnectAttr.address) || ObjectUtil.isNull(ftpConnectAttr.userName)){
        log.error("连接地址或连接的用户名不能为空");
        return null;
    }
    FTPClient ftpClient = new FTPClient();
    try {
        String url = ftpConnectAttr.address;
        log.info("设置ftp地址：" + url);
        if(url.split(":").length == 2){
            String[] us = url.split(":");
            int port = Integer.valueOf(us[1]);
            ftpClient.connect(us[0],port);
        }else {
            ftpClient.connect(url);
        }
        ftpClient.setDataTimeout(120000);       //设置传输超时时间为120秒
        ftpClient.setConnectTimeout(120000);       //连接超时为120秒
        ftpClient.setControlEncoding("GBK");
        log.info("设置登陆账号：" + ftpConnectAttr.userName + ":" + ftpConnectAttr.password);
        ftpClient.login(ftpConnectAttr.userName, ftpConnectAttr.password);
        int reply = ftpClient.getReplyCode();
        if(String.valueOf(reply).indexOf("2") != 0){
            log.error("ftp连接失败，返回值：" + reply);
            if(ftpClient.isConnected()){
                ftpClient.disconnect();
                return null;
            }
        }
        log.info("ftp连接成功，返回值：" + reply);
    } catch (IOException e) {
        log.error("获取FTPClient发生错误,返回null",e);
        if(ftpClient.isConnected()){
            try {
                ftpClient.disconnect();
            } catch (IOException ignored) {
            }
        }
        return null;
    }
    return ftpClient;
}
 

/**
 * A stream obtained via this call must be closed before using other APIs of
 * this class or else the invocation will block.
 */
@Override
public FSDataOutputStream create(Path file, FsPermission permission,
    boolean overwrite, int bufferSize, short replication, long blockSize,
    Progressable progress) throws IOException {
  final FTPClient client = connect();
  Path workDir = new Path(client.printWorkingDirectory());
  Path absolute = makeAbsolute(workDir, file);
  if (exists(client, file)) {
    if (overwrite) {
      delete(client, file);
    } else {
      disconnect(client);
      throw new IOException("File already exists: " + file);
    }
  }
  Path parent = absolute.getParent();
  if (parent == null || !mkdirs(client, parent, FsPermission.getDefault())) {
    parent = (parent == null) ? new Path("/") : parent;
    disconnect(client);
    throw new IOException("create(): Mkdirs failed to create: " + parent);
  }
  client.allocate(bufferSize);
  // Change to parent directory on the server. Only then can we write to the
  // file on the server by opening up an OutputStream. As a side effect the
  // working directory on the server is changed to the parent directory of the
  // file. The FTP client connection is closed when close() is called on the
  // FSDataOutputStream.
  client.changeWorkingDirectory(parent.toUri().getPath());
  FSDataOutputStream fos = new FSDataOutputStream(client.storeFileStream(file
      .getName()), statistics) {
    @Override
    public void close() throws IOException {
      super.close();
      if (!client.isConnected()) {
        throw new FTPException("Client not connected");
      }
      boolean cmdCompleted = client.completePendingCommand();
      disconnect(client);
      if (!cmdCompleted) {
        throw new FTPException("Could not complete transfer, Reply Code - "
            + client.getReplyCode());
      }
    }
  };
  if (!FTPReply.isPositivePreliminary(client.getReplyCode())) {
    // The ftpClient is an inconsistent state. Must close the stream
    // which in turn will logout and disconnect from FTP server
    fos.close();
    throw new IOException("Unable to create file: " + file + ", Aborting");
  }
  return fos;
}