Log4j的简单使用

1. 所需要的jar包

log4j.jar --> http://logging.apache.org/log4j/

commons-logging.jar --> http://commons.apache.org/logging/

2. src下的log4j.properties配置文件

(1) 级别： DEBUG < INFO < WARN < ERROR < FATAL

 

# -----------------------------------------------------------------------------------
#
#  E G O X   L O G G I N G   P R O P E R T I E S
#
# -----------------------------------------------------------------------------------

# -----------------------------------------------------------------------------------
# I use Log4J 
# -----------------------------------------------------------------------------------

log4j.rootLogger = DEBUG, CONSOLE, FILE, ROLLING_FILE
log4j.logger.com.test.log4j=WARN

# Console Appender
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p (%F:%M():%L) %m%n
log4j.appender.CONSOLE.Threshold=DEBUG

#File Appender
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.FILE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p (%F:%M():%L) %m%n
log4j.appender.FILE.File=file.log
log4j.appender.FILE.Threshold=DEBUG
#log4j.appender.FILE.Append=false

#Rolling File
log4j.appender.ROLLING_FILE=org.apache.log4j.RollingFileAppender
log4j.appender.ROLLING_FILE.Threshold=ERROR
log4j.appender.ROLLING_FILE.File=logs/rolling.log
log4j.appender.ROLLING_FILE.Append=true
log4j.appender.ROLLING_FILE.MaxFileSize=10KB
log4j.appender.ROLLING_FILE.MaxBackupIndex=1
log4j.appender.ROLLING_FILE.layout=org.apache.log4j.PatternLayout
log4j.appender.ROLLING_FILE.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p (%F:%M():%L) %m%n