@Service public class FtpService { @Reference private FtpConnector connector; public void uploadFile(String localPath, String remotePath) throws IOException { try (InputStream inputStream = new FileInputStream(localPath)) { connector.upload(remotePath, inputStream); } } public void downloadFile(String remotePath, String localPath) throws IOException { try (OutputStream outputStream = new FileOutputStream(localPath)) { connector.download(remotePath, outputStream); } } }