/**定义切面*/
@Aspect
/**加入spring容器*/
@Component
/**日志输出 topic对应的是log4j.properties 的属性名log4j.logger.test*/
@Slf4j(topic = "test")

/**
 * @title 日志切面
 * @author: chanQ
 * @date: 2020/11/18 14:31
 */
public class LogAspect {
    /**
     * 定义切点
     */
    @Pointcut("execution(* com.lovo.service..*(..))")
    public void logPointcut(){}

    /**
     * 前置通知, 在方法执行之前执行
     * @param joinPoint
     */
    @Before("logPointcut()")
    public void sayHello(JoinPoint joinPoint){
        log.debug("前置通知"+joinPoint.getSignature());
    }

    /**
     * 后置通知, 在方法执行之后执行，方法无论有没有异常都会执行
     * @param joinPoint
     */
    @After("logPointcut()")
    public void sayBye(JoinPoint joinPoint){
        log.debug("后置通知："+joinPoint.getSignature());
    }

    /**
     * 返回通知, 在方法正常结束并返回结果之后执行
     * @param joinPoint
     */
    @AfterReturning("logPointcut()")
    public void sayReturning(JoinPoint joinPoint){

        log.error("返回通知："+joinPoint.getSignature());
    }

    /**
     * 异常通知, 在方法抛出异常之后
     * @param joinPoint
     */
    @AfterThrowing("logPointcut()")
    public void sayError(JoinPoint joinPoint){

        log.error("异常通知："+joinPoint.getSignature());
    }

    /**
     * 环绕通知, 围绕着方法执行
     * @param joinPoint
     * @return
     * @throws Throwable
     */
    @Around("execution(* com.lovo.service..*(..))")
    public Object sayAround(ProceedingJoinPoint joinPoint) throws Throwable {
        log.debug("环绕通知进入方法："+joinPoint.getSignature());
        Object obj = null;
        try {
            obj = joinPoint.proceed(joinPoint.getArgs());
        } catch (Throwable throwable) {
            throwable.printStackTrace();
            log.error("环绕抛出异常："+joinPoint.getSignature());
            throw throwable;
        }
        log.debug("环绕通知退出方法："+joinPoint.getSignature());
        return obj;
    }
}

执行方法后

2020-11-18 16:03:39,492  环绕通知进入方法：findAll()
2020-11-18 16:03:39,493 [前置通知List findAll()
Hibernate: select userdo0_.user_id as user_id1_0_, userdo0_.user_phone as user_pho2_0_, userdo0_.user_pwd as user_pwd3_0_ from user_info userdo0_
2020-11-18 16:03:39,650  返回通知：findAll()
2020-11-18 16:03:39,650  后置通知：findAll()
2020-11-18 16:03:39,651 环绕通知退出方法findAll()