发表更新Java / Log1 分钟读完 (大约174个字)

Log：日志工具输出log的使用

　　日志的简单使用，三种方式。

  1. org.apache.commons.logging.Log
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//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);
  1. log4j 1.x 版本：org.apache.log4j.Logger
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//org.apache.log4j.Logger;
private final Logger logger = Logger.getLogger(this.getClass());

logger.info(Object msg);
  1. log4j 2.x 版本：org.apache.logging.log4j.Logger
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private static final Logger logger = LogManager.getLogger(xxxClass.class);

logger.info(String msg);
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