Spring AOP example

 import com.fasterxml.jackson.databind.ObjectMapper;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Component
@Aspect
public class ControllerAOP {

    //execution command : <access specifier> <return type> <pacakge.classname.methodname(returntype)>
    //example: execution(* com.some.packagename.ClassName.methodname(allarguments))
    @Pointcut(value = "execution(public * com.api.*.*.*(..))")
    public void controllerPointCut() {}

    //A pointcut on a annotation. example: to pointcut on 'Service' annotation
    @Pointcut("@within(org.springframework.stereotype.Service)")
    public void serviceAnnotationPointCut() {}

    @Around(value = "controllerPointCut()")
    public Object myAround(ProceedingJoinPoint jp) throws Throwable {

        ObjectMapper objectMapper = new ObjectMapper();

        System.out.println("Method name :" + jp.getSignature().getName()); // to get method name
        System.out.println("Class name : " + jp.getTarget().getClass().getName()); // to get class name
        System.out.println("Arguments : " + objectMapper.writeValueAsString(jp.getArgs())); //to get arguments

        Object obj = jp.proceed();

        System.out.println("Response : " + objectMapper.writeValueAsString(obj)); //to get response body

        return obj;
    }

    @Around(value = "serviceAnnotationPointCut()")
    public Object serviceAnnotationAround(ProceedingJoinPoint jp) throws Throwable {

        ObjectMapper objectMapper = new ObjectMapper();

        System.out.println("Method name :" + jp.getSignature().getName()); // to get method name
        System.out.println("Class name : " + jp.getTarget().getClass().getName()); // to get class name
        System.out.println("Arguments : " + objectMapper.writeValueAsString(jp.getArgs())); //to get arguments

        Object obj = jp.proceed();

        System.out.println("Response : " + objectMapper.writeValueAsString(obj)); //to get response body

        return obj;
    }

}