Spring AOP（2）使用AspectJ注解

 

 

 

 1.使用maven引入依赖：

    <dependency>
      <groupId>aopalliance</groupId>
      <artifactId>aopalliance</artifactId>
      <version>1.0</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.9</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>4.2.4.RELEASE</version>
    </dependency>

2.编写切面类：

/**
 * 切面类
 */
@Aspect       //定义切面
public class MyAspectAnno {

    @Before(value="myPointcut1()")
    public void before(JoinPoint joinPoint){
        System.out.println("前置通知=================="+joinPoint);
    }

    @AfterReturning(value="myPointcut2()",returning = "result")
    public void afterReturing(Object result){
        System.out.println("后置通知=================="+result);
    }

    @Around(value="myPointcut3()")
    public Object around(ProceedingJoinPoint joinPoint) throws Throwable {
        System.out.println("环绕前通知================");
        Object obj = joinPoint.proceed(); // 执行目标方法
        System.out.println("环绕后通知================");
        return obj;
    }

    @AfterThrowing(value="myPointcut4()",throwing = "e")
    public void afterThrowing(Throwable e){
        System.out.println("异常抛出通知=============="+e.getMessage());
    }

    @After(value="myPointcut5()")
    public void after(){
        System.out.println("最终通知==================");
    }


    @Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.save(..))")       //给切面命名
    private void myPointcut1(){}

    @Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.update(..))")
    private void myPointcut2(){}

    @Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.delete(..))")
    private void myPointcut3(){}

    @Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.findOne(..))")
    private void myPointcut4(){}

    @Pointcut(value="execution(* com.imooc.aspectJ.demo1.ProductDao.findAll(..))")
    private void myPointcut5(){}
}