7、log4j.properties

 

log4j.appender.xiaozhi.File =org.apache.log4j.DailyRollingFileAppender
log4j.appender.xiaozhi.File.file =d:\\xiaozhi.log
log4j.appender.xiaozhi.File.DatePattern =.yyyy-MM-dd
log4j.appender.xiaozhi.File.layout =org.apache.log4j.PatternLayout
log4j.appender.xiaozhi.File.layout.ConversionPattern =%d{yyyy-MM-dd HH:mm:ss,SSS} %5p (%C:%M) - %m%n

log4j.appender.xiaozhi.Console =org.apache.log4j.ConsoleAppender
log4j.appender.xiaozhi.Console.layout =org.apache.log4j.PatternLayout   
log4j.appender.xiaozhi.Console.layout.ConversionPattern =%d{yyyy-MM-dd HH:mm:ss,SSS} %5p (%C:%M) - %m%n


log4j.rootLogger=error,xiaozhi.File,xiaozhi.Console
#log4j.logger.com.xiaozhi=debug,xiaozhi.Console,xiaozhi.File
#log4j.logger.com.xiaozhi.dao=error,xiaozhi.Console,xiaozhi.File

Appender、Layout、Logger三者之间的关系

　　1、每个appender后面必然需要跟随layout，指定自己的风格样式

　　2、每个Logger都可以指定一个级别，同时引用多个Appender

　　3、每个Appender也同时可以被多个Logger引用