R – Spring, log4j and JBoss4

jboss-4.2.xlog4jspring

I'm running JBoss 4.2.3.GA, and have a web app that uses Spring and Log4j. I've set up Spring's Log4jConfigurer, but am having a problem since JBoss's log4j file is not on the classpath. It's at jboss.home/server/defaul/conf/jboss-log4j.xml. So, without hard-coding the path in Log4jConfigurer, how can I get Spring to use JBoss's log4j file?

Best Answer

You don't generally modify JBoss's log4j config via the applications, that's a route to madness. JBoss uses a shared configuration amongst all apps.

You can, however, programmatically alter log4j's runtime configuration, such as adding custom appenders or loggers. This isn't what Spring's Log4jConfigurer is for, however - you use that to configure a standalone log4j config.

Related Solutions

Java – Reinitialize log4j on web app deployment using Log4jConfigListener

Log4jConfigListener doesn't really play nice in situations where the app server manages log4j itself (as it does in this case). The two are going to end up getting into a tug-of-war over who gets to configure log4j.

I suggest not using Log4jConfigListener with JBoss, and rely instead on JBoss's own log4j configuration.

Java – Set System Property With Spring Configuration File

There was a request in the comments for a Spring 3 example on how to do this.

<bean id="systemPrereqs"
    class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
    <property name="targetObject" value="#{@systemProperties}" />
    <property name="targetMethod" value="putAll" />
    <property name="arguments">
        <!-- The new Properties -->
        <util:properties>
            <prop key="java.security.auth.login.config">/super/secret/jaas.conf</prop>
        </util:properties>
    </property>
</bean>

Best Answer

Related Solutions

Java – Reinitialize log4j on web app deployment using Log4jConfigListener

Java – Set System Property With Spring Configuration File

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