从commons logger获取底层log4 logger

Posted 2021-02-26

This snippet shows how to get access to the underlying log4j logger when using apache commons logging.

if(logger instanceof Log4JLogger)
    {
      Log4JLogger log4j = (Log4JLogger)logger;
      Logger underlyingLogger = log4j.getLogger();
      underlyingLogger.setLevel(Level.INFO);
      underlyingLogger.addAppender(new ConsoleAppender(
                                     new PatternLayout("%-5p [%t]: %m%n")));
    }