在MAIN方法中使用log4j

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1.在main方法中加载

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//同时输出到控制台和一个文件的实例并实现了Logger的继承
PropertyConfigurator.configure("E://workspace//log4jtest//log4j.properties");
logger.debug("Start of the main() in TestLog4j");
logger.info("Just testing a log message with priority set to INFO");
logger.warn("Just testing a log message with priority set to WARN");
logger.error("Just testing a log message with priority set to ERROR");
logger.fatal("Just testing a log message with priority set to FATAL");
logger.log(Priority.WARN, "Testing a log message use a alternate form");
logger.debug(TestLog4j.class.getName());
  //同时输出到控制台和一个文件的实例并实现了Logger的继承
  PropertyConfigurator.configure("E://workspace//log4jtest//log4j.properties");
  logger.debug("Start of the main() in TestLog4j");
  logger.info("Just testing a log message with priority set to INFO");
  logger.warn("Just testing a log message with priority set to WARN");
  logger.error("Just testing a log message with priority set to ERROR");
  logger.fatal("Just testing a log message with priority set to FATAL");
  logger.log(Priority.WARN, "Testing a log message use a alternate form");
  logger.debug(TestLog4j.class.getName());

然后在需要的地方加logger.debug就可以了

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