log4j the format meaning of the Conversionpattern parameter-go

Transferred from: http://www.blogjava.net/wilesun/archive/2007/10/30/156999.html

LOG4J recommends using only four levels, with priority levels from high to low, error, WARN, INFO, DEBUG
#这里定义能显示到的最低级别, if you define to the info level, you will not see the debug level of information!
Log4j.rootlogger=debug

#将DAO层log记录到DAOLog, in Alllog
Log4j.logger.dao=debug,a2,a4
#将逻辑层log记录到BusinessLog, in Alllog
Log4j.logger.businesslog=debug,a3,a4

#A1--Print to the screen
Log4j.appender.a1=org.apache.log4j.consoleappender
Log4j.appender.a1.layout=org.apache.log4j.patternlayout
log4j.appender.a1.layout.conversionpattern=%-5p [%t]%37c%3x-%m%n

#A2--Print to file Daolog--specifically for DAO layer service
Log4j.appender.a2=org.apache.log4j.dailyrollingfileappender
Log4j.appender.a2.file=daolog
Log4j.appender.a2.datepattern= '. ' Yyyy-mm-dd
Log4j.appender.a2.layout=org.apache.log4j.patternlayout
LOG4J.APPENDER.A2.LAYOUT.CONVERSIONPATTERN=[%-5P]%d{yyyy-mm-dd Hh:mm:ss,sss} method:%l%n%m%n

#A3--Print to file Businesslog--specifically record the logical processing layer service log information
Log4j.appender.a3=org.apache.log4j.dailyrollingfileappender
Log4j.appender.a3.file=businesslog
Log4j.appender.a3.datepattern= '. ' Yyyy-mm-dd
Log4j.appender.a3.layout=org.apache.log4j.patternlayout
LOG4J.APPENDER.A3.LAYOUT.CONVERSIONPATTERN=[%-5P]%d{yyyy-mm-dd Hh:mm:ss,sss} method:%l%n%m%n

#A4--Print to file Alllog--Log all log information
Log4j.appender.a4=org.apache.log4j.dailyrollingfileappender
Log4j.appender.a4.file=alllog
Log4j.appender.a4.datepattern= '. ' Yyyy-mm-dd
Log4j.appender.a4.layout=org.apache.log4j.patternlayout
LOG4J.APPENDER.A4.LAYOUT.CONVERSIONPATTERN=[%-5P]%d{yyyy-mm-dd Hh:mm:ss,sss} method:%l%n%m%n

#Appender的使用
Log4j.appender.a2=org.apache.log4j.dailyrollingfileappender
Log4j.appender.a2.file=demo
Log4j.appender.a2.datepattern= '. ' Yyyy-mm-dd
Log4j.appender.a2.layout=org.apache.log4j.patternlayout
log4j.appender.a2.layout.conversionpattern=%m%n

#Layout的配置
Log4j.appender.a2.layout=org.apache.log4j.patternlayout
LOG4J.APPENDER.A2.LAYOUT.CONVERSIONPATTERN=[%-5P]%d{yyyy-mm-dd Hh:mm:ss,sss} method:%l%n%m%n

The format meaning of the Conversionpattern parameter
Format name meaning
The full name of the class to which the%c output log information belongs
%d the date or time of the output log time, the default format is ISO8601, or the format can be specified later, for example:%d{yyy-mm-dd HH:mm:ss}, output similar to: 2002-10-18-22:10:28
%f the class name of the class to which the output log information belongs
%l the occurrence of the output log event where the statement that outputs the log information is in the first line of the class it is in
%m the information specified in the output code, such as a message in log (message)
%n output a carriage return newline character, Windows platform is "RN", UNIX platform is "n"
%p output priority, or debug,info,warn,error,fatal. Debug if the debug () output is called, and so on
%r the number of milliseconds that the output from the application starts to output this log information
%t output The name of the thread that generated the log event

The #1 defines two outputs
Log4j.rootlogger = INFO, A1, A2,A3

#2 define A1 output to the controller
Log4j.appender.A1 = Org.apache.log4j.ConsoleAppender
The layout mode for the #3 definition A1 is patternlayout
Log4j.appender.A1.layout = Org.apache.log4j.PatternLayout
#4 defining the output format of the A1
Log4j.appender.A1.layout.ConversionPattern =%-4r [%t]%-5p%c-%m%n

#5 define A2 output to a file
Log4j.appender.A2 = Org.apache.log4j.RollingFileAppender
#6 define A2 to which file to output
Log4j.appender.A2.File = F:nepalonclassesexample3.log
#7 defines the maximum length of the output file for A2
Log4j.appender.A2.MaxFileSize = 1KB
#8 define the number of backup files for A2
Log4j.appender.A2.MaxBackupIndex = 3
The layout mode for the #9 definition A2 is patternlayout
Log4j.appender.A2.layout = Org.apache.log4j.PatternLayout
#10 defining the output format of the A2
Log4j.appender.A2.layout.ConversionPattern =%d{yyyy-mm-dd hh:mm:ss}:%p%t%c-%m%n

log4j the format meaning of the Conversionpattern parameter-go