Log4J2 - Einfaches Konfigurationsfile

Die Log4J2 Konfigurationsdatei speichert im Ordner logs drei Dateien (Infos.log, Warn.log, Error.log)

Aus dem Java Program kann nun in die einzelnen Levels geschrieben werden:

<code=java>log.info("Hello world - info log");</code=java> <code=java>log.warn("Hello world - warn log");</code=java> <code=java>log.erro("Hello world - error log");</code=java>

In der Console kommt jede Ausgabe, in den Logfiles nur die der entsprechenden Ebene:

<code=xml><?xml version="1.0" encoding="UTF-8"?> <Configuration> <Appenders> <Console name="STDOUT" target="SYSTEM_OUT"> <PatternLayout pattern="%d %-5p [%t] %C{2} (%F:%L) - %m%n" /> </Console>

<RollingFile name="fileInfo" fileName="logs/Info.log" filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.info.gz">

<PatternLayout> <pattern>%d %-5p [%t] %C{2} (%F:%L) - %m%n</pattern> </PatternLayout>

<Filters> <ThresholdFilter level="info" /> <ThresholdFilter level="warn" onMatch="DENY" onMismatch="NEUTRAL" /> </Filters>

<Policies> <SizeBasedTriggeringPolicy size="5 MB" /> </Policies>

<DefaultRolloverStrategy max="20" /> </RollingFile>

<RollingFile name="fileWarn" fileName="logs/Warn.log" filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.warn.gz">

<PatternLayout> <pattern>%d %-5p [%t] %C{2} (%F:%L) - %m%n</pattern> </PatternLayout>

<Filters> <ThresholdFilter level="warn" /> <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL" /> </Filters>

<Policies> <SizeBasedTriggeringPolicy size="5 MB" /> </Policies>

<DefaultRolloverStrategy max="20" /> </RollingFile>

<RollingFile name="fileError" fileName="logs/Error.log" filePattern="logs/$${date:yyyy-MM}/app-%d{MM-dd-yyyy}-%i.error.gz">

<PatternLayout> <pattern>%d %-5p [%t] %C{2} (%F:%L) - %m%n</pattern> </PatternLayout>

<Filters> <ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY" /> </Filters>

<Policies> <SizeBasedTriggeringPolicy size="5 MB" /> </Policies>

<DefaultRolloverStrategy max="20" /> </RollingFile> </Appenders>

<Loggers> <Logger name="org.apache.log4j2.xml"> <appender-ref ref="fileInfo" /> <appender-ref ref="fileWarn" /> <appender-ref ref="fileError" /> </Logger>

<Root level="info"> <AppenderRef ref="STDOUT" /> <AppenderRef ref="fileInfo" /> <AppenderRef ref="fileWarn" /> <AppenderRef ref="fileError" /> </Root> </Loggers> </Configuration>

</code=xml>