log4j output logs to different files by level

Log4j.rootlogger=info,stdout,info,debug,error
Log4j.appender.stdout=org.apache.log4j.consoleappender
Log4j.appender.stdout.layout=org.apache.log4j.patternlayout
log4j.appender.stdout.layout.conversionpattern=[%-5p] [%d{hh:mm:ss}]%c-%m%n
 
Log4j.logger.info=info
Log4j.appender.info=org.apache.log4j.dailyrollingfileappender
Log4j.appender.info.layout=org.apache.log4j.patternlayout
log4j.appender.info.layout.conversionpattern=[%-5p] [%d{hh:mm:ss}]%c-%m%n
log4j.appender.info.datepattern= '. ' YYYY-MM-DD
Log4j.appender.info.Threshold = info
log4j.appender.info.append=true
Log4j.appender.info.file=${webapp.root}/web-inf/logs/info.log
 
Log4j.logger.debug=debug
Log4j.appender.debug=org.apache.log4j.dailyrollingfileappender
Log4j.appender.debug.layout=org.apache.log4j.patternlayout
log4j.appender.debug.layout.conversionpattern=[%-5p] [%d{hh:mm:ss}]%c-%m%n
log4j.appender.debug.datepattern= '. ' YYYY-MM-DD
log4j.appender.debug.Threshold = Debug
log4j.appender.debug.append=true
Log4j.appender.debug.file=${webapp.root}/web-inf/logs/debug.log

Log4j.logger.error=error
Log4j.appender.error=org.apache.log4j.dailyrollingfileappender
Log4j.appender.error.layout=org.apache.log4j.patternlayout
log4j.appender.error.layout.conversionpattern=[%-5p] [%d{hh:mm:ss}]%c-%m%n
log4j.appender.error.datepattern= '. ' YYYY-MM-DD
log4j.appender.error.Threshold = Error
log4j.appender.error.append=true

Log4j.appender.error.file=${webapp.root}/web-inf/logs/error.log

also describe a more comprehensive log4j.properties resource file

Log4j.rootlogger=debug,console,dailyfile,im
log4j.additivity.org.apache=true
# Consoles (console)
Log4j.appender.console=org.apache.log4j.conSoleappender
Log4j.appender.console.threshold=debug
log4j.appender.console.immediateflush=true
Log4j.appender.console.target=system.err
Log4j.appender.console.layout=org.apache.log4j.patternlayout
log4j.appender.console.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n

# log file (logFile)
Log4j.appender.logfile=org.apache.log4j.fileappender
Log4j.appender.logfile.threshold=debug
log4j.appender.logfile.immediateflush=true
log4j.appender.logfile.append=true
log4j.appender.logfile.file=d:/logs/log.log4j
Log4j.appender.logfile.layout=org.apache.log4j.patternlayout
log4j.appender.logfile.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n
# Rollback file (rollingfile)
Log4j.appender.rollingfile=org.apache.log4j.rollingfileappender
Log4j.appender.rollingfile.threshold=debug
log4j.appender.rollingfile.immediateflush=true
log4j.appender.rollingfile.append=true
log4j.appender.rollingfile.file=d:/logs/log.log4j
log4j.appender.rollingfile.maxfilesize=200kb
log4j.appender.rollingfile.maxbackupindex=50
Log4j.appender.rollingfile.layout=org.apache.log4j.patternlayout
log4j.appender.rollingfile.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n
# Roll Back log files periodically (Dailyfile)
Log4j.appender.dailyfile=org.apache.log4j.dailyrollingfileappender
Log4j.appender.dailyfile.threshold=debug
log4j.appender.dailyfile.immediateflush=true
log4j.appender.dailyfile.append=true
log4j.appender.dailyfile.file=d:/logs/log.log4j
log4j.appender.dailyfile.datepattern= '. ' YYYY-MM-DD
Log4j.appender.dailyfile.layout=org.apache.log4j.patternlayout
log4j.appender.dailyfile.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n
# applied to socket
Log4j.appender.socket=org.apache.log4j.rollingfileappender
Log4j.appender.socket.remotehost=localhost
log4j.appender.socket.port=5001
log4j.appender.socket.locationinfo=true
# Set up for Log Factor 5
Log4j.appender.socket.layout=org.apache.log4j.patternlayout
log4j.appender.socket.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n
# Log Factor 5 Appender
Log4j.appender.lf5_appender=org.apache.log4j.lf5.lf5appender
Log4j.appender.LF5_APPENDER. maxnumberofrecords=2000
# Send log to specified message
Log4j.appender.mail=org.apache.log4j.net.smtpappender
Log4j.appender.mail.threshold=fatal
log4j.appender.mail.buffersize=10
log4j.appender.mail.From = [email protected]
log4j.appender.mail.smtphost=mail.com
log4j.appender.mail.subject=log4j Message
log4j.appender.mail.to= [email protected]
Log4j.appender.mail.layout=org.apache.log4j.patternlayout
log4j.appender.mail.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n
# Apply to Database
Log4j.appender.database=org.apache.log4j.jdbc.jdbcappender
log4j.appender.database.url=jdbc:mysql://localhost:3306/test
Log4j.appender.database.driver=com.mysql.jdbc.driver
Log4j.appender.database.user=root
log4j.appender.database.password=
Log4j.appender.database.sql=insert into log4j (Message) VALUES (' =[%-5p]%d (%r)--[%t]%l:%m%x%n ')
Log4j.appender.database.layout=org.apache.log4j.patternlayout
log4j.appender.database.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n

# Custom Appender
log4j.appender.im = Net.cybercorlin.util.logger.appender.IMAppender
log4j.appender.im.host = mail.cybercorlin.net
Log4j.appender.im.username = Username
Log4j.appender.im.password = password
log4j.appender.im.recipient = [email protected]
Log4j.appender.im.layout=org.apache.log4j.patternlayout
log4j.appender.im.layout.conversionpattern=[%-5p]%d (%r)--[%t]%l:%m%x%n

log4j output logs to different files by level