/apache-log4j-1.2.17/tests/input/xml/customLevel4.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration SYSTEM "log4j.dtd">
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<log4j:configuration debug="true" 
                     xmlns:log4j='http://jakarta.apache.org/log4j/'>

  <appender name="TEMP" class="org.apache.log4j.FileAppender">
    <param name="Append" value="false" />
    <param name="File"   value="output/temp" />
    <layout class="org.apache.log4j.PatternLayout">
      <param name="ConversionPattern"
	value="%-5p %c{2} - %m\n"/>
    </layout>
  </appender>

  <root>
    <level value="TRACE#org.apache.log4j.xml.XLevel"/>
    <appender-ref ref="TEMP" />
  </root>
</log4j:configuration>