B.2. Separate Log Files Per Application
To segregate logging output per application, assign log4j categories to specific appenders. This is typically done in the
conf/log4j.xml deployment descriptor.
Example B.2. Filtering App1 Log Output to a Separate File
<appender name="App1Log" class="org.apache.log4j.FileAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"></errorHandler>
<param name="Append" value="false"/>
<param name="File" value="${jboss.server.home.dir}/log/app1.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n"/>
</layout>
</appender>
...
<category name="com.app1">
<appender-ref ref="App1Log"></appender-ref>
</category>
<category name="com.util">
<appender-ref ref="App1Log"></appender-ref>
</category>
Example B.3. Using TCLMCFilter
Enterprise Platform 5.1 includes the new class
jboss.logging.filter.TCLMCFilter, which allows you to filter based on the deployment URL.
<appender name="App1Log" class="org.apache.log4j.FileAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"></errorHandler>
<param name="Append" value="false"/>
<param name="File" value="${jboss.server.home.dir}/log/app1.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n"/>
</layout>
<filter class="org.jboss.logging.filter.TCLMCFilter">
<param name="AcceptOnMatch" value="true"/>
<param name="DeployURL" value="app1.ear"/>
</filter>
<!-- end the filter chain here -->
<filter class="org.apache.log4j.varia.DenyAllFilter"></filter>
</appender>