src/java/org/apache/log4j/test/xml/domTest6.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE log4j:configuration >

<log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'>

	<appender name="A1" class="org.apache.log4j.FileAppender">
                <param name="Append" value="false" />
		<param name="File"   value="temp" />
		<layout class="org.apache.log4j.PatternLayout">
 		    <param name="ConversionPattern"
		           value="%-5p %c{2} - %m\n"/>
		</layout>
                <!-- Accept all LoggingEvents containing the string
                "1" in the message field. -->
		<filter class="org.apache.log4j.varia.StringMatchFilter">
                  <param name="StringToMatch" value="1" />
		</filter>
                <!-- Accept all LoggingEvents containing the string
                "2" in its message field. -->
		<filter class="org.apache.log4j.varia.StringMatchFilter">
                  <param name="StringToMatch" value="2" />
		</filter>
		<!-- Deny (filter out) everything else. -->
		<filter class="org.apache.log4j.varia.DenyAllFilter"/>
	</appender>

	<root>
          <appender-ref ref="A1" />	       
	</root>
</log4j:configuration>