Spring aop 例子们 TBC

叁歲伎倆 2024-02-18 17:26 16阅读 0赞

参考[http://blog.csdn.net/yangshangwei/article/details/77972638][http_blog.csdn.net_yangshangwei_article_details_77972638]

### this() ###

测试类：

@RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration
    @WebAppConfiguration
    @SpringBootTest
    public class AopTest {
        
    
        @Autowired
        private WebApplicationContext context;
    
        @Test
        public void test() {
            BusinessService myBusinessService = (BusinessService) context.getBean("businessService");
            myBusinessService.logic();
        }
    }

Aspect类：

@Slf4j
    @Aspect
    @Component
    public class MyAspect {
        
    
        @Pointcut("this(mybusinessService)") // 只要和参数名称匹配，名随意
        public void businessServiceObject(BusinessService mybusinessService) {};
    
        @Before(value = "businessServiceObject(businessService)") // 只要和参数名称匹配，名随意
        public void beforeBusinessServiceObject(BusinessService businessService) {
            log.info("aspect: before businessServiceObject");
        }
    }

Service类：

@Slf4j
    @Component
    public class BusinessService {
        
    
        public void logic() {
            log.info("service");
        }
    }

结果：

2017-12-29 17:28:56.723  INFO 11568 --- [           main] com.example.demosm.my.aop.MyAspect       : aspect: before businessServiceObject
    2017-12-29 17:28:56.726  INFO 11568 --- [           main] c.example.demosm.my.aop.BusinessService  : service

### @Annotation ###

Aspect类：

@AfterReturning("@annotation(n)")
        public void afterReturningFromAnnotated(NeedTest n) {
            log.info("aspect: afterreturning annotated {}", n.value());
        }

Service类：

@NeedTest
        public void logic() {
            log.info("service");
        }

输出：

2018-01-02 09:41:29.343  INFO 8772 --- [           main] com.example.demosm.my.aop.MyAspect       : aspect: before businessServiceObject
    2018-01-02 09:41:29.343  INFO 8772 --- [           main] c.example.demosm.my.aop.BusinessService  : service
    2018-01-02 09:41:29.343  INFO 8772 --- [           main] com.example.demosm.my.aop.MyAspect       : aspect: afterreturning annotated false

\*before和afterReturnning可以作用于一个方法

[http_blog.csdn.net_yangshangwei_article_details_77972638]: http://blog.csdn.net/yangshangwei/article/details/77972638