Spring-Aop注解应用

注解配置

/切面的配置

@Aspect

public class MyAspect {

    //切点

    @Pointcut("execution(*  com.ujiuye.service.*ServiceImpl.*(..))")

    public void pt(){}

    @Before("pt()")

    public void before(){

        System.out.println("这是前置通知");

    }

    @Around("pt()")

    public Object around(ProceedingJoinPoint  point) throws Throwable {

        System.out.println("这是环绕通知之前");

        Object obj = point.proceed();

        System.out.println("这是环绕通知之后");

        return obj;

    }

    @After("pt()")

    public void after(){

        System.out.println("这是后置通知（无论是否出现异常都会执行）");

    }

    @AfterReturning("pt()")

    public void afterReturnning(){

        System.out.println("这是后置通知，(如果有异常不走)");

    }

    @AfterThrowing("pt()")

    public void afterThrowing(){

        System.out.println("捕获到了异常");

    }

}

 

xml配置

<!--让spring 扫描aop的注解，自动配置aop-->

         <aop:aspectj-autoproxy/>

         <bean class="com.ujiuye.aspect.MyAspect"/>

 

 

         <bean id="personService" class="com.ujiuye.service.PersonServiceImpl">

                  <property name="dao" ref="personDao"/>

         </bean>

         <bean id="personDao" class="com.ujiuye.dao.PersonDaoImpl"/>