rgoers/log4j2-core/src/test/resources/log4j-strict1.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
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<configuration status="debug" strict="true" name="XMLConfigTest" packages="org.apache.logging.log4j.test">
  <properties>
    <property name="filename">target/test.log</property>
  </properties>
  <filter type="ThresholdFilter" level="trace"/>

  <appenders>
    <appender type="Console" name="STDOUT">
      <layout type="PatternLayout" pattern="%m MDC%X%n"/>
      <filters>
        <filter type="MarkerFilter" marker="FLOW" onMatch="DENY" onMismatch="NEUTRAL"/>
        <filter type="MarkerFilter" marker="EXCEPTION" onMatch="DENY" onMismatch="ACCEPT"/>
      </filters>
    </appender>
    <appender type="Console" name="FLOW">
      <layout type="PatternLayout" pattern="%C{1}.%M %m %ex%n"/>
      <filters>
        <filter type="MarkerFilter" marker="FLOW" onMatch="ACCEPT" onMismatch="NEUTRAL"/>
        <filter type="MarkerFilter" marker="EXCEPTION" onMatch="ACCEPT" onMismatch="DENY"/>
      </filters>
    </appender>
    <appender type="File" name="File" fileName="${filename}">
      <layout type="PatternLayout">
        <pattern>%d %p %C{1.} [%t] %m%n</pattern>
      </layout>
    </appender>
    <appender type="List" name="List">
    </appender>
  </appenders>

  <loggers>
    <logger name="org.apache.logging.log4j.test1" level="debug" additivity="false">
      <filter type="ThreadContextMapFilter">
        <KeyValuePair key="test" value="123"/>
      </filter>
      <appender-ref ref="STDOUT"/>
    </logger>>

    <logger name="org.apache.logging.log4j.test2" level="debug" additivity="false">
      <appender-ref ref="File"/>
    </logger>>

    <root level="trace">
      <appender-ref ref="List"/>
    </root>
  </loggers>

</configuration>