log4j级别的理解

 ### direct log messages to stdout ###
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=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

 

 

#这是log4j根的输出级别设置

log4j.rootLogger=info, stdout

 

#---------------下面是log4j根的子项，子项可以设置不同的级别，当子项级别高于根的级别时，输出-----------------------

log4j.logger.net.sf.hibernate=warn

 

log4j.logger.net.sf.hibernate.type=info

log4j.logger.net.sf.hibernate.tool.hbm2ddl=debug

 

#-----------------------------------------------

 

 

#级别由低至高debug,info,warn,error,fatal.