#log4j.rootLogger=INFO,Clog4j.rootLogger=INFO,C#first way log All########### C,System.out#log4j.appender.C.Threshold=INFO print info or above########### log4j.logger.sfk.bbs=INFO,C,F# only log the package start with sfk.bbs#second way set log package log4j.appender.C=org.apache.log4j.ConsoleAppenderlog4j.appender.C.Threshold=INFO log4j.appender.C.layout=org.apache.log4j.PatternLayoutlog4j.appender.C.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %L %p %C{1} - %m%n############save in file#log4j.appender.F.Threshold=INFO ,info or above###########log4j.appender.F=org.apache.log4j.DailyRollingFileAppender# save file pathlog4j.appender.F.File=D:\test\lobs.loglog4j.appender.F.Append=truelog4j.appender.F.Threshold=INFOlog4j.appender.F.layout=org.apache.log4j.PatternLayoutlog4j.appender.F.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %L %p %C{1} - %m%n