public interface Calculator {

    int div(int a,int b);

}

@Component

public class CalculatorImpl implements Calculator{

    @Override

    public int div(int a, int b) {

        int result = a/b;

        System.out.println("计算结果为："+result);

        return result;

    }

}

@Aspect

@Component

public class CalculatorAspect {

    @Before(value = "execution(* com.jixian.springboot1.CalculatorImpl.*(..))")

    public void beforeNotify(){

        System.out.println("@Before...前置通知");

    }

    @After(value = "execution(* com.jixian.springboot1.CalculatorImpl.*(..))")

    public void afterNotify(){

        System.out.println("@After...后置通知");

    }

    @AfterReturning(value = "execution(* com.jixian.springboot1.CalculatorImpl.*(..))")

    public void afterReturningNotify(){

        System.out.println("@AfterReturning...返回通知");

    }

    @AfterThrowing(value = "execution(* com.jixian.springboot1.CalculatorImpl.*(..))")

    public void afterThrowingNotify(){

        System.out.println("@AfterThrowing...异常通知");

    }

    @Around(value = "execution(* com.jixian.springboot1.CalculatorImpl.*(..))")

    public Object aroundNotify(ProceedingJoinPoint joinPoint) throws Throwable{

        Object res = null;

        System.out.println("@Around...环绕通知之前A");

        res = joinPoint.proceed();

        System.out.println("@Around...环绕通知之后B");

        return res;

    }

}

@SpringBootTest

@RunWith(SpringRunner.class)

public class SpringBoot1ApplicationTests {

    @Autowired

    private Calculator calculator;

    @Test

    public void contextLoads() {

        System.out.println("Spring版本："+ SpringVersion.getVersion()+"\t"+"SpringBoot版本："+ SpringBootVersion.getVersion());

        calculator.div(5,2);

    }

}