java日志(log)实践

目的

分享实践成果,解决简单的log日志问题

指定log的范围,指定特定类输出至特定目录

#配置文件指定根logger
log4j.rootLogger=A
#指定类
log4j.logger.classPathA=A
log4j.logger.classPathB=A
log4j.logger.classPathC=A
#指定logger的输出
log4j.appender.A=org.apache.log4j.ConsoleAppender
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=%d %5p [%t] %c{1} -%X{aid} %m%n
#指定logger的等级
log4j.appender.A.threshold=ALL

如:指定类com.example.Test所有等级的log输出至控制台,而其他log只输出WARN等级日志

log4j.rootLogger=CONSOLE,A

##### CONSOLE appender
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d %5p [%t] %c{1} -%X{aid} %m%n
log4j.appender.CONSOLE.threshold=WARN
##### A appender
log4j.logger.com.example.TestA=A
log4j.logger.com.example.TestB=A
log4j.logger.com.example.TestC=A
log4j.appender.A=org.apache.log4j.ConsoleAppender
log4j.appender.A.layout=org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern=%d %5p [%t] %c{1} -%X{aid} %m%n
log4j.appender.A.threshold=ALL