My Spring AOP not working

Question

I need help making AOP work. What am I missing here?

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans 
   http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"&gt;

   <bean id="duke" class="com.tutorial.springidol.Singer">
      <constructor-arg value="Duke"/>
      <constructor-arg>
         <bean class="com.tutorial.springidol.Song">
            <property name="title" value="ABC"/>
     </bean>  
      </constructor-arg>
   </bean>  

   <bean id="audienceAdvice" class="com.tutorial.advice.AudienceAdvice">
 <property name="audience">
  <bean class="com.tutorial.springidol.Audience"/>
 </property>
   </bean>

   <bean id="audienceAdvisor"  
      class="org.springframework.
      aop.support.RegexpMethodPointcutAdvisor">

      <property name="advice" ref="audienceAdvice"/>
      <property name="pattern" value=".*perform"/>
  </bean>
 </beans>

AudienceAdvice.java

public class AudienceAdvice implements MethodBeforeAdvice,
                     AfterReturningAdvice {
    @Override
    public void before(Method arg0, Object[] arg1, Object arg2)
      throws Throwable {
     audience.takeSeats();
     audience.turnOffCellphones();
    }

    @Override
    public void afterReturning(Object arg0, Method arg1, Object[] arg2,
      Object arg3) throws Throwable {
     audience.applaud();
    }
    private Audience audience;
    public void setAudience(Audience audience) {
     this.audience = audience;
    }
}

The AOP does not work but the target executes though.

Answer 1

You've declared the target bean and the advice, but by default Spring doesn't know to actually apply the advice to the target.

You need to run an Autoproxy.

One way to do this:

<!--  Autoproxy -->
<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">
 <property name="beanNames">
  <list>
   <value>duke</value>    
  </list>
 </property>

 <property name="interceptorNames">
  <list>
   <value>audienceAdvisor</value>
  </list>
 </property>
</bean>