获取request和response

在spring MVC 中如何获取request和response 呢?

HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
				HttpServletResponse response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
				

if(ValueWidget.isNullOrEmpty(tVVideo)){
			HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
			logger.error("tVVideo is null:"+request.getRequestURL());
			return;
		}