光星の博客

　　日志的简单使用，三种方式。

1. org.apache.commons.logging.Log

//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;
private static final Log log = LogFactory.getLog(xxxServiceImpl.class);

log.info(Object msg);

2. log4j 1.x 版本：org.apache.log4j.Logger

//org.apache.log4j.Logger;
private final Logger logger = Logger.getLogger(this.getClass());

logger.info(Object msg);

3. log4j 2.x 版本：org.apache.logging.log4j.Logger

private static final Logger logger = LogManager.getLogger(xxxClass.class);

logger.info(String msg);