import org.codelibs.core.lang.StringUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author shinsuke
 *
 */
public class FtpAuthentication {
    private static final Logger logger = LoggerFactory.getLogger(FtpAuthentication.class);

    private String server;

    private int port;

    private String username;

    private String password;

    public String getServer() {

        final FtpAuthentication[] ftpAuthentications =
                getInitParameter(FTP_AUTHENTICATIONS_PROPERTY, new FtpAuthentication[0], FtpAuthentication[].class);
        if (ftpAuthentications != null) {
            for (final FtpAuthentication ftpAuthentication : ftpAuthentications) {
                holder.add(ftpAuthentication);
            }
        }

                        logger.warn("username is empty. fileAuth:{}", fileAuthName);
                        continue;
                    }

                    final FtpAuthentication ftpAuth = new FtpAuthentication();
                    ftpAuth.setServer(hostname);
                    if (StringUtil.isNotBlank(port)) {
                        try {