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I'm use to RollingFileAppender on normal log4j. Now I'm switching to log4j2, and cannot get the appender to work.
The File appender below works as expected. But the logging file for RollingFile is never created. Why?
<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
<Appenders>
<File name="FILE" fileName="c:/logs.log">
<PatternLayout pattern="%d %p %c: %m%n" />
</File>
<RollingFile name="ROLLING" fileName="c:/logsroll.log">
<PatternLayout pattern="%d %p %c: %m%n"/>
<Policies>
<TimeBasedTriggeringPolicy />
<SizeBasedTriggeringPolicy size="0.001 MB"/>
</Policies>
<DefaultRolloverStrategy max="10"/>
</RollingFile>
</Appenders>
<Loggers>
<Root level="info">
<AppenderRef ref="FILE" />
<AppenderRef ref="ROLLING" />
</Root>
</Loggers>
</Configuration>
357
The DefaultRolloverStrategy is a combination of a time-based policy and a fixed-window policy. When the file name pattern contains a date format then the rollover time interval will be used to calculate the time to use in the file pattern.
This concept is known as Logger Hierarchy. Logger Hierarchy is made up of set of LoggerConfig objects with a parent-child relationship. The topmost element in every Logger Hierarchy is the Root Logger. If Log4j2 doesn't find the configuration file, only Root Logger will be used for logging with logging level as ERROR.
The RollingFile tag is missing a filePattern attribute.
<RollingFile name="ROLLING"
fileName="c:/logsroll.log"
filePattern="c:/logsroll-%i.log">
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