malanga :
I need to create a new log file once a day, or if log file size become 250 MB. So how can i do this through log4j.properties file? Dividing by day is working, but if size become more than 250MB nothing happens. My current property file is:
# Root logger option
log4j.rootLogger=INFO,console, file
# Direct log messages to a log file
log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.encoding=UTF-8
log4j.appender.file.RollingPolicy=org.apache.log4j.rolling.TimeBasedRollingPolicy
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000
log4j.appender.rollingFile.MaxFileSize=10MB
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# configuration to print on console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
PythonLearner :
As per the following log4j link https://logging.apache.org/log4php/docs/appenders/rolling-file.html, you have to add the following lines.
log4j.appender.file=org.apache.log4j.rolling.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.TriggeringPolicy.maxFileSize=250000
Note:
- File Appender should be
RollingFileAppender - Triggering Policy should be
SizeBasedTriggeringPolicy
EDIT:
# Direct log messages to a log filelog4j.appender.file.encoding=UTF-8
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.TriggeringPolicy=org.apache.log4j.rolling.SizeBasedTriggeringPolicy
log4j.appender.file.File=${LOG_DIR}/application.log
log4j.appender.file.RollingPolicy.FileNamePattern=./logs/application_%d{dd-MM-yyyy}.log
log4j.appender.rfile.layout=org.apache.log4j.PatternLayout
log4j.appender.rfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
log4j.appender.file.MaxFileSize=250MB
log4j.appender.file.MaxBackupIndex=2
log4j.appender.file.append=true
You can refer complete example below. https://howtodoinjava.com/log4j/log4j-rolling-file-appender/
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