log4j不打印info日志问题只打印error日志

Question

log4j.rootLogger=info,stdout,infofile
#log4j.rootLogger=debug,stdout,debugfile
log4j.rootLogger=error,stdout,errorfile
#log4j.rootLogger=warn,stdout,warnfile

log4j.additivity.myInfo = true
log4j.additivity.myDebug = true
log4j.additivity.myError = true
log4j.additivity.myWarn = true
log4j.logger.myInfo = info,infofile,allfile
log4j.logger.myDebug = debug,debugfile,allfile
log4j.logger.myError = error,errorfile,allfile
log4j.logger.myWarn = warn,warnfile,allfile


log4j.ConversionPattern=[%p] %d{yyyy-MM-dd HH:mm:ss} [%t] %n%m%n
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=${log4j.ConversionPattern}

log4j.appender.allfile=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.allfile.File=/logs/miipsys/all.log
log4j.appender.allfile.DatePattern=yyyy-MM-dd'.log'
log4j.appender.allfile.layout=org.apache.log4j.PatternLayout 
log4j.appender.allfile.layout.ConversionPattern= ${log4j.ConversionPattern}

log4j.appender.infofile=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.infofile.File=/logs/miipsys/info.log
log4j.appender.infofile.DatePattern=yyyy-MM-dd'.log'
log4j.appender.infofile.layout=org.apache.log4j.PatternLayout 
log4j.appender.infofile.layout.ConversionPattern= ${log4j.ConversionPattern}

log4j.appender.debugfile=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.debugfile.File=/logs/miipsys/debug.log
log4j.appender.debugfile.DatePattern=yyyy-MM-dd'.log'
log4j.appender.debugfile.layout=org.apache.log4j.PatternLayout 
log4j.appender.debugfile.layout.ConversionPattern= ${log4j.ConversionPattern}

log4j.appender.errorfile=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.errorfile.File=/logs/miipsys/error.log
log4j.appender.errorfile.DatePattern=yyyy-MM-dd'.log'
log4j.appender.errorfile.layout=org.apache.log4j.PatternLayout 
log4j.appender.errorfile.layout.ConversionPattern= ${log4j.ConversionPattern}

log4j.appender.warnfile=org.apache.log4j.DailyRollingFileAppender 
log4j.appender.warnfile.File=/logs/miipsys/warn.log
log4j.appender.warnfile.DatePattern=yyyy-MM-dd'.log'
log4j.appender.warnfile.layout=org.apache.log4j.PatternLayout 
log4j.appender.warnfile.layout.ConversionPattern= ${log4j.ConversionPattern}

#log4j.logger.java.sql.Connection=debug 
#log4j.logger.java.sql.Statement=debug 
#log4j.logger.java.sql.PreparedStatement=debug 
#log4j.logger.java.sql.ResultSet=debug

Answer 1

log4j.rootLogger设置的是错误级别信息。

log4j一般使用的四个级别由高到低为：error、warn、info、debug

如你配置文件中设置的错误级别为log4j.rootLogger=error，只会打印error级别的日志。

一般设置为log4j.rootLogger=debug级别，就会打印比当前级别高的日志信息。