@Aspect
@Component
@Slf4j
public class PageAop {

   @Pointcut("@annotation(com.example.annotation.EnablePaging)")
    public void serviceAspect(){
        log.info("serviceAspect");
    }

    @Before("serviceAspect()")
    public  void doBefore(JoinPoint joinPoint) {
        log.info("doBefore");
    }



    @Around(value = "serviceAspect()")
    public Object doAround(ProceedingJoinPoint point) throws  Throwable{
        log.info("doAround ");
        Object[] args = point.getArgs();
        Integer pageNum = 1;
        Integer pageSize = 10;
        if(args.length >= 2){
            pageNum = (Integer)args[args.length -2];
            pageSize = (Integer)args[args.length - 1];
        }
        PageHelper.startPage(pageNum, pageSize);
        return  point.proceed(args);
    }


}