JAVA开发中log4j.properties的典型配置

虽然LOG的工具很多，log4j还是简单易用，个人认为log4j.properties的配置比XML格式好用，多年来的配置总结，备忘。(适用Tomcat)

##工程名称变量,用于日志文件的一部分
projectName=xxxx

##顶层日志配置项
log4j.rootLogger=DEBUG,console,allLog

log4j.logger.com.xx.xxx=DEBUG,baseLog
##...按需增加输出

### Console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{ABSOLUTE} %5p %c.%M():%L - %m%n

### baseLog
log4j.appender.baseLog=org.apache.log4j.RollingFileAppender
log4j.appender.baseLog.File=${catalina.base}/logs/${projectName}_base_debug.log
log4j.appender.baseLog.MaxFileSize=10MB
log4j.appender.baseLog.MaxBackupIndex=5
log4j.appender.baseLog.Append=true
log4j.appender.baseLog.layout=org.apache.log4j.PatternLayout
log4j.appender.baseLog.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %5p %c.%M():%L - %m%n

### allLog
log4j.appender.allLog=org.apache.log4j.RollingFileAppender
log4j.appender.allLog.File=${catalina.base}/logs/${projectName}_all_debug.log
log4j.appender.allLog.MaxFileSize=10MB
log4j.appender.allLog.MaxBackupIndex=5
log4j.appender.allLog.Append=true
log4j.appender.allLog.Threshold=DEBUG
log4j.appender.allLog.layout=org.apache.log4j.PatternLayout
log4j.appender.allLog.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %5p %c.%M():%L - %m%n

### error
log4j.appender.error=org.apache.log4j.DailyRollingFileAppender
log4j.appender.error.File=${catalina.base}/logs/${projectName}_all_error.log
log4j.appender.error.Threshold=ERROR
log4j.appender.error.layout=org.apache.log4j.PatternLayout
log4j.appender.error.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %5p %c.%M():%L - %m%n
log4j.appender.error.DatePattern=yyyy-MM-dd'.log'

##++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
##各项目个性化增加配置项
log4j.logger.com.xxx.xxxx=DEBUG,myLog

### myLog
log4j.appender.myLog=org.apache.log4j.RollingFileAppender
log4j.appender.myLog.File=${catalina.base}/logs/${projectName}_my_debug.log
log4j.appender.myLog.MaxFileSize=10MB
log4j.appender.myLog.MaxBackupIndex=5
log4j.appender.myLog.Append=true
log4j.appender.myLog.layout=org.apache.log4j.PatternLayout
log4j.appender.myLog.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss SSS} %5p %c.%M():%L - %m%n

###=============================================================