Spring AOP AspectJ After Advice Example using @After Annotation

In this Spring AOP example, we will learn to use AspectJ @After annotation in Spring-based applications. After advice methods annotated with @After that will execute after a join point execution, no matter how the execution ended.

In this example, We will create a simple spring boot application, add logging aspect and then invoke aspect methods based on pointcuts information passed in a @After annotation.

AspectJ @After Annotation Usage

Below snippet shows usage of @After annotation:

package net.guides.springboot2.springaop.aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

/**
 * Aspect for logging execution.
 * 
 * @author Ramesh Fadatare
 *
 */
@Aspect
@Component
public class LoggingAspect {

    private final Logger LOGGER = LoggerFactory.getLogger(this.getClass());

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.*(..))")
    public void logAfterAllMethods(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterAllMethods() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.getEmployeeById(..))")
    public void logAfterGetEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterGetEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.addEmployee(..))")
    public void logAfterAddEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.deleteEmployee(..))")
    public void logAfterDeleteEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.getAllEmployees(..))")
    public void logAfterGetAllEmployees(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }
}

Let's demonstrate the usage of @After annotation with a complete step by step example.

Create an Aspect - LogginAspect.java

Let's create a LoggingAspect using Java-based configuration. Here is an AspectJ annotated class and methods with pointcut information:

package net.guides.springboot2.springaop.aspect;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

/**
 * Aspect for logging execution.
 * 
 * @author Ramesh Fadatare
 *
 */
@Aspect
@Component
public class LoggingAspect {

    private final Logger LOGGER = LoggerFactory.getLogger(this.getClass());

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.*(..))")
    public void logAfterAllMethods(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterAllMethods() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.getEmployeeById(..))")
    public void logAfterGetEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterGetEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.addEmployee(..))")
    public void logAfterAddEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.deleteEmployee(..))")
    public void logAfterDeleteEmployee(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }

    @After("execution(* net.guides.springboot2.springaop.service.EmployeeService.getAllEmployees(..))")
    public void logAfterGetAllEmployees(JoinPoint joinPoint) {
        LOGGER.debug("****LoggingAspect.logAfterCreateEmployee() : " + joinPoint.getSignature().getName());
    }
}