Java 面向面向切面编程 AOP @Aspect

@Aspect
public class MyAspect {


    // 定义切入点函数
    @Pointcut("execution(* *..UserServiceimpl.doFirst(..))")
    private void mypt(){
    }


    @Before("mypt()")
    public void myBefore(){
        System.out.println("执行了before");
    }

    
    @AfterReturning(value = "mypt()",returning = "res")
    public void myAfterReturn(Object res){
        System.out.println("执行了myAfterReturn");
    }

    @Around("mypt()")
    public Object myAround(ProceedingJoinPoint pjp) throws Throwable {
        System.out.println("执行了Around");
        return pjp.proceed();
    }

    @After("mypt()")
    public void myAfter(){
        System.out.println("执行了Afer");
    }

    @AfterThrowing(value = "mybt()",throwing = "ex")
    public void myAfyerThrow(Exception ex){
        System.out.println("执行了 AfterThrowing ");
        System.out.println(ex.getMessage());

    }


}