@Component
public class TestBeanAspect {

    public void testAop() {
        System.out.println("---------------------- test aop ---------------------");
    }


}

@Component
@Aspect
public class TestAspect {

    @Pointcut("execution(* com.example.demo.entity.TestBeanAspect.testAop(..))")
    public void pointcut() {

    }

    @Before("pointcut()")
    public void before() {
        System.out.println("---------------------- aop before method --------------------");
    }
}

@Configuration
@ComponentScan({"com.example.demo"})
@EnableAspectJAutoProxy //开启spring对注解aop的支持
public class SpringConfig {

    // @Bean
    // public TestBean getTestBean() {
    //     return new TestBean();
    // }

    @Bean
    public TestAspect testAspect() {
        return new TestAspect();
    }

    @Bean
    public TestBeanAspect testBeanAspect() {
        return new TestBeanAspect();
    }
}


@Test
public void test3() {
  ApplicationContext context = new AnnotationConfigApplicationContext(SpringConfig.class);
  TestBeanAspect testBean = context.getBean(TestBeanAspect.class);
  testBean.testAop();
}