Getting started with Autoproxy @AspectJ

[jhericks]

I'm sorry. I know this must be answered already on this forum, but I can't seem to find it with search. I am working through Spring in Action 2nd Edition and using Spring 2.5. I have gotten advice working by using proxy factory beans, but I can't seem to get any of my AutoProxy stuff working. In particular, I'd like to use the AspectJ annotations. By "not working" I mean the Audience methods aren't being called at all. I thought including the <aop:aspectj-autoproxy/> tag would do the trick, but I guess not. Here is my code:

problem-config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
	<aop:aspectj-autoproxy/>
	<bean id="duke" class="com.dbo2.idol.Juggler">
		<property name="beanBags" value="15" />
	</bean>

	<bean id="audience" class="com.dbo2.idol.Audience" />
</beans>

Performer.java:

package com.dbo2.idol;

public interface Performer {
	void perform() throws PerformanceException;
}

Juggler.java:

package com.dbo2.idol;

public class Juggler implements Performer {

    private int beanBags = 3;

    public void setBeanBags(int beanBags) {
	this.beanBags = beanBags;
    }

    @Override
    public void perform() throws PerformanceException {
	System.out.println("JUGGLING " + beanBags + " BEANBAGS");

    }

}

Audience.java:

package com.dbo2.idol;

import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

@Aspect
public class Audience {
    @Pointcut("execution(* *.perform(..))")
    public void performance() {
    }

    @Before("performance()")
    public void takeSeats() {
	System.out.println("The audience is taking their seats");
    }

    @Before("performance()")
    public void turnOffcellPhones() {
	System.out.println("The audience is turning off their cell phones");
    }

    @AfterReturning("performance()")
    public void applaud() {
	System.out.println("CLAP CLAP CLAP CLAP CLAP");
    }

    @AfterThrowing("performance()")
    public void demandRefund() {
	System.out.println("Boo! We want our money back!");
    }
}

ProblemApp.java:

package com.dbo2.idol;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;

public class ProblemApp {

    /**
     * @param args
     */
    public static void main(String[] args) {
	BeanFactory factory = new XmlBeanFactory(new FileSystemResource(
		"C:/Dev/SafetyNet/WebContent/WEB-INF/problem-config.xml"));
	Performer performer = (Performer) factory.getBean("duke");
	performer.perform();
    }

}

When I run this I get the following output:

2008-05-18 22:09:20,517 INFO org.springframework.beans.factory.xml.XmlBeanDefin itionReader - Loading XML bean definitions from file [C:\Dev\SafetyNet\WebContent\WEB-INF\problem-config.xml]
JUGGLING 15 BEANBAGS

I expected some stuff from my Audience, but nothing. Any advice on what I'm doing wrong? Am I making a bad assumption about the <aop:aspectj-autoproxy/> tag? Do I need to pass any JVM arguments to take advantage of the annotations? (I'm using JDK 1.6.)

[Marten Deinum]

Read the reference guide chapter 3.

Use an ApplicationContext instead of a BeanFactory. After that it probably still won't work because your pointcut is wrong it only matches classes in the default (i.e. NO) package.

[jhericks]

Thanks, that worked great. The pointcuts seemed to work fine as is.

For anyone else who runs across this thread, the specific section of the reference is "3.8. The ApplicationContext"