springboot如何使用自定义的aspect

<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-aop</artifactId>
 </dependency>

@Aspect
@Component
@Slf4j
public class TestAspect {

    /**
     * 对TestService类下面的所有方法拦截.
     */
    @Pointcut("execution(* com.lind.start.test.aop.TestService.*(..))")
    public void pointcut() {
    }

    //前置通知
    @Before("pointcut()")
    public void beforeMethod(JoinPoint joinPoint) {
        if (joinPoint.getArgs().length == 1 && joinPoint.getArgs()[0] instanceof User) {
            User user = (User) joinPoint.getArgs()[0];
            user.setUsername("aop赋值");
            log.info("调用了前置通知" + user.toString());
        }

    }

    //@After: 后置通知
    @After("pointcut()")
    public void afterMethod(JoinPoint joinPoint) {
        log.info("调用了后置通知");
    }

    //@AfterRunning: 返回通知 result为返回内容
    @AfterReturning(value = "pointcut()", returning = "result")
    public void afterReturningMethod(JoinPoint joinPoint, Object result) {
        log.info("调用了返回通知");
    }

    //@Around：环绕通知
    @Around("pointcut()")
    public Object Around(ProceedingJoinPoint pjp) throws Throwable {
        log.info("around执行方法之前");
        Object object = pjp.proceed();
        log.info("around执行方法之后--返回值：" + object);
        return object;
    }

}

@SpringBootTest
@RunWith(SpringRunner.class)
public class AopTest {
    @Autowired
    TestService testService;

    @Test
    public void test() {
        testService.print(new User());
    }
}