Spring AOP Pointcut Annotation

In Spring AOP pointcuts determine join points of interest, and thus enable us to control when advice executes.In the @AspectJ annotation-style of AOP, a pointcut signature is
provided by a regular method definition, and the pointcut expression is indicated using the @Pointcut annotation. for example:-
            @Pointcut("execution(* transfer(..))")// the pointcut expression
               private void anyOldTransfer() {}// the pointcut signature

MainClaz.java

package roseindia.net.main;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;

import org.aopalliance.aop.Advice;
import org.springframework.aop.Advisor;
import org.springframework.aop.AfterReturningAdvice;
import org.springframework.aop.MethodBeforeAdvice;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.aop.support.DefaultPointcutAdvisor;
import org.springframework.aop.support.annotation.AnnotationMatchingPointcut;

public class MainClaz {
	public static void main(String[] args) {
		SimpleBean target = new SimpleBean();
		AnnotationMatchingPointcut pointcut = new AnnotationMatchingPointcut(
				null, SimpleAnnotation.class);
		Advice advice = new SimpleBeforeAdvice();
		Advisor advisor = new DefaultPointcutAdvisor(pointcut, advice);
		ProxyFactory proxyFactory = new ProxyFactory();
		proxyFactory.setTarget(target);
		proxyFactory.addAdvisor(advisor);
		SimpleBean proxy = (SimpleBean) proxyFactory.getProxy();
		proxy.getName();
		proxy.getAge();
	}
}

class SimpleBeforeAdvice implements MethodBeforeAdvice {
	public void before(Method method, Object[] objects, Object object)
			throws Throwable {
		System.out.println("Before " + method + " method");
	}
}

class AnnotationAfterAdvice implements AfterReturningAdvice {
	public void afterReturning(Object object, Method method, Object[] objects,
			Object obj) throws Throwable {
		System.out.print("Annotated After: " + method + " method");
	}
}

@Target( { ElementType.METHOD, ElementType.TYPE })
@Retention(RetentionPolicy.RUNTIME)
@interface SimpleAnnotation {
}

@SimpleAnnotation
class SimpleBean {
	@SimpleAnnotation
	public String getName() {
		return "Vinay";
	}

	public void setName(String name) {
	}

	public int getAge() {
		return 24;
	}
}

Download this example code

Related Tags for Spring AOP Pointcut Annotation: