Simple AOP example is not working

[salpie]

Hi everyone,

I'm very new to Spring and its DI and AOP stuff.

I'm trying to learn AOP as of now and it seems I can't get my project working. Can someone help me?

greeting interface:

public interface GreetingService {
    void sayGreeting();
}

greeting implementation:

public class GreetingServiceImpl implements GreetingService{
    private String greeting;

    public GreetingServiceImpl() {
    }

    public GreetingServiceImpl(String greeting) {
        this.greeting = greeting;
    }
    
    public void sayGreeting() {
        System.out.println(this.greeting);
    }

    public void setGreeting(String greeting){
        this.greeting = greeting;
    }

}

main class:

public class HellopApp {
    public static void main(String[] args){

        try{            
            BeanFactory factory = new XmlBeanFactory(new FileSystemResource("src/com/springinaction/chapter01/hello/hello.xml"));

            GreetingService greetingService = (GreetingService) factory.getBean("greetingService");
            greetingService.sayGreeting();
        }catch(Exception e){
            System.out.println(e.getMessage());
        }
    }
}

I'm trying to weave this class as the aspect object but it seems that its methods are not called before and after the "sayGreeting()" method. I expect an output like :
"Hola que tal?"
"Muy bien, y tu?"
"Muy bien, gracias!"

But what i get is:
"Muy bien, y tu?"

public class GreetingMan {
    public void pre(){
        System.out.println("Hola que tal?");
        
    }

    public void post(){
        System.out.println("Muy bien, gracias!");
        
    }
}

What seems to be the problem with my XML configuration file?

<?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-2.0.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">
        
    <bean id="greetingService" class="com.springinaction.chapter01.hello.GreetingServiceImpl">
        <property name="greeting" value="Muy bien, y tu?" />
    </bean>
 
    <bean id="greetingMan" class="com.springinaction.chapter01.hello.GreetingMan"/>
    
    <aop:config>
        <aop:aspect ref="greetingMan">
            <aop:pointcut id="greetPointCut" expression="execution(* *.sayGreeting(..)) and target(bean)"/>
            <aop:before method="pre" pointcut-ref="greetPointCut" arg-names="bean"/>
            <aop:after-returning method="post" pointcut-ref="greetPointCut" arg-names="bean"/>
        </aop:aspect>
    </aop:config>    
</beans>

Thanks