log4j

log4j:可以输出日志到控制台或文件。
 
一、导入包:log4j
二、新建src/log4j.properties文件:
  • #set log level and output place
  • log4j.rootLogger = debug,stdout,D
  • log4j.appender.stdout = org.apache.log4j.ConsoleAppender
  • log4j.appender.stdout.Target = System.out
  • log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
  • log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n
  • log4j.appender.D = org.apache.log4j.DailyRollingFileAppender
  • log4j.appender.D.File = log.log
  • log4j.appender.D.Append = true
  • log4j.appender.D.Threshold = DEBUG
  • log4j.appender.D.layout = org.apache.log4j.PatternLayout
  • log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
三、使用log4j:
  • Logger log=Logger.getLogger(Test.class);
  • log.debug("this is a 测试");
四、在mybatis中开启log4j:
  • <configuration>
  •        <settings>
  •               <setting name="logImpl" value="log4j"/>
  •        </settings>
五、log4j.propertie控制输出内容:
  • log4j.rootLogger = error,stdout,D
  • log4j.logger.com.mybatis=debug    (只输出com.mybatis中的日志)
 
 
posted @ 2019-05-12 14:06  woldcn  阅读(92)  评论(0编辑  收藏  举报