apo 简单参考

参考： https://www.cnblogs.com/Geyoung/p/6927905.html

@Aspect
@Component
public class TimeAspect {
    //通过这种方法可以拿到对象中所有的方法，对象
    @Around("execution(* com.imooc.web.controller.UserController.*(..))")
    public Object handleControllerMethod(ProceedingJoinPoint pjp) throws Throwable {
        
        System.out.println("time aspect start");
        
        Object[] args = pjp.getArgs();
        for (Object arg : args) {  
            System.out.println("arg is "+arg);
        }
        
        long start = new Date().getTime();
        
        Object object = pjp.proceed();
        
        System.out.println("time aspect 耗时:"+ (new Date().getTime() - start));
        
        System.out.println("time aspect end");
        
        return object;
    }

}