Spring AOP简单的标签配置和xml配置

标签:

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
@Aspect //what 切面类
@Component
public class MyAspect
{
    @Pointcut("execution(* add(..))") //where 在哪个地方增强   所有的add方法
    private void pointcut() {}

   @Before("com.bw.springaop.MyAspect.pointcut()")
    private void before(JoinPoint joinPoint) {
        System.out.println(joinPoint.getTarget() + "----------------------Before---------------------");
    }
    @Around("bean(userService)") // when  什么时候增强
    private void after(ProceedingJoinPoint joinPoint) throws Throwable
    {
        System.out.println(joinPoint.getTarget() + "----------------------环绕增强开始---------------------");
        joinPoint.proceed();
        System.out.println(joinPoint.getTarget() + "----------------------环绕增强结束---------------------");
    }
}

xml配置:

<bean class="com.bw.springaop.MyAspect" id="myAspect"/><aop:config> <!--what-->
 <aop:aspect ref="myAspect">
        <aop:pointcut id="pointcut" expression="bean(userService)"></aop:pointcut><!--where-->
        <aop:around method="after" pointcut-ref="pointcut"></aop:around><!--when-->
    </aop:aspect>
</aop:config>

 事物的配置: