Question

I have a j2ee web application running on Spring framework. I want to implement logging using log4j and Spring’s AOP. I was trying to find for references but I only get references which does not use log4j.

I had exactly the same configuration as what was on the link you gave. I have declared too a bean which where I want to implement logging. The beans id is ExecuteBLogic so I put below *BLogic

<bean name="methodLoggingInterceptor" class="org.developers.blog.spring.aop.logging.MethodLoggingInterceptor"/>
<bean name="proxyCreator" class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
    <property name="beanNames">
        <list>
            <value>*BLogic</value>
        </list>
    </property>
    <property name="interceptorNames">
        <list>
            <value>methodLoggingInterceptor</value>
        </list>
    </property>
</bean>

Answer 1

There are many examples that show how to log information using spring AOP. The fact that they are using System.out or java.util.logging should bother you – just replace these lines with log4j lines.

So, ontop of the class:

private static final Logger logger = Logger.getLogger(LoggingInterceptor.class);

and then instead of System.out.println(..):

logger.info(..);