在Spring MVC中，为了能够随时取到当前请求的对象数据，可以通过@Autowired注解法获取，或者通过RequestContextHolder的静态方法getRequestAttributes获取相关变量，从而获取HttpServletRequest和HttpServletResponse对象。
一、获取HttpServletRequest：
// 注解法 @Autowired protected HttpServletRequest request; // RequestContextHolder法 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletRequest request = attributes.getResponse();
二、获取HttpServletResponse：
// 注解法 @Autowired protected HttpServletResponse response; // RequestContextHolder法 ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); HttpServletResponse response = attributes.getResponse();