import com.timgroup.statsd.StatsDClientErrorHandler; //导入依赖的package包/类
private StatsDClient createClient(String statsdHost, int port) {
    StatsDClientErrorHandler errorHandler = new StatsDClientErrorHandler() {
        @Override
        public void handle(Exception exception) {
            log.error("Error sending to statsd: " + ExceptionToString.format(exception));
        }
    };
    if (statsdHost == null) {
        log.fatal("Error, statsd host not set. It needs to be set in RaptureMETRICS.cfg");
        return new NoOpStatsDClient();
    } else {
        try {
            InetAddress address = InetAddress.getByName(statsdHost);
            String ip = address.getHostAddress();
            log.info(String.format("statsd host=%s, ip=%s", statsdHost, ip));
            return createClient(ip, port, errorHandler);
        } catch (UnknownHostException e) {
            log.error(String.format("Error resolving statsd host ip. hostname=%s - %s", statsdHost, ExceptionToString.format(e)));
            return createClient(statsdHost, port, errorHandler);
        }
    }
}