http://www.benmccann.com/dev-blog/sample-log4j-properties-file/
I always find the hardest part of getting started with log4j is creating a log4j.properties file. For that reason, I’ve posted an example below. This file configures log4j to log any messages of level info or higher to the console except for classes under the com.dappit.Dapper.parser or org.w3c.tidy packages.
#------------------------------------------------------------------------------ # # The following properties set the logging levels and log appender. The # log4j.rootCategory variable defines the default log level and one or more # appenders. For the console, use 'S'. For the daily rolling file, use 'R'. # For an HTML formatted log, use 'H'. # # To override the default (rootCategory) log level, define a property of the # form (see below for available values): # # log4j.logger. = # # Available logger names: # TODO # # Possible Log Levels: # FATAL, ERROR, WARN, INFO, DEBUG # #------------------------------------------------------------------------------ log4j.rootCategory=INFO, S log4j.logger.com.dappit.Dapper.parser=ERROR log4j.logger.org.w3c.tidy=FATAL #------------------------------------------------------------------------------ # # The following properties configure the console (stdout) appender. # See http://logging.apache.org/log4j/docs/api/index.html for details. # #------------------------------------------------------------------------------ log4j.appender.S = org.apache.log4j.ConsoleAppender log4j.appender.S.layout = org.apache.log4j.PatternLayout log4j.appender.S.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss} %c{1} [%p] %m%n #------------------------------------------------------------------------------ # # The following properties configure the Daily Rolling File appender. # See http://logging.apache.org/log4j/docs/api/index.html for details. # #------------------------------------------------------------------------------ log4j.appender.R = org.apache.log4j.DailyRollingFileAppender log4j.appender.R.File = logs/bensApps.log log4j.appender.R.Append = true log4j.appender.R.DatePattern = '.'yyy-MM-dd log4j.appender.R.layout = org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern = %d{yyyy-MM-dd HH:mm:ss} %c{1} [%p] %m%n #------------------------------------------------------------------------------ # # The following properties configure the Rolling File appender in HTML. # See http://logging.apache.org/log4j/docs/api/index.html for details. # #------------------------------------------------------------------------------ log4j.appender.H = org.apache.log4j.RollingFileAppender log4j.appender.H.File = logs/bensApps.html log4j.appender.H.MaxFileSize = 100KB log4j.appender.H.Append = false log4j.appender.H.layout = org.apache.log4j.HTMLLayout