Log4j2 RollingFileAppender is an OutputStreamAppender that writes log messages to files, following a configured triggering policy about when a rollover (backup) should occur.
Learn to use log4j LevelRangeFilter filter which returns the onMatch result if the level in the LogEvent is in the range of the configured min and max levels, otherwise it returns onMismatch value. LevelRangeFilter example In given log4j2.xml file, we have used to LevelRangeFilter to filter log levels in such a way that : All […]
Given log4j2.xml is reference to configure multiple appenders such as console appender and file appenders. This also configure the dynamic log root path. Log4j multiple appenders configuration Sample log4j configuration is given blow. It does following things: Uses dynamic log root path where log files will be created. Pass environment variable as -DAPP_LOG_ROOT=c:/temp to configure […]
This Log4j2 example will help you in configuring log4j2.xml file with HTMLLayout. The HTMLLayout generates an HTML page and adds each log statement to a row in a table.
Log4j2 ThreadContext allows you to fish tag the log statements with multiple unique tags to analyze logs while diagnose a problem in runtime.