Log.java 文件源码

public static void setupLogger(Config config) throws IOException {

        Layout layout = new PatternLayout("%d{" + DATE_FORMAT + "} %5p: %m%n");

        Appender appender = new DailyRollingFileAppender(
                layout, config.getString("logger.file"), "'.'yyyyMMdd");

        LogManager.resetConfiguration();
        LogManager.getRootLogger().addAppender(new NullAppender());

        logger = Logger.getLogger(LOGGER_NAME);
        logger.addAppender(appender);
        logger.setLevel(Level.toLevel(config.getString("logger.level"), Level.ALL));

        // Workaround for "Bug 745866 - (EDG-45) Possible netty logging config problem"
        InternalLoggerFactory.setDefaultFactory(new InternalLoggerFactory() {
            @Override
            public InternalLogger newInstance(String string) {
                return new NettyInternalLogger();
            }
        });

        Log.logSystemInfo();
        Log.info("Version: " + getAppVersion());
    }