SpringMVC_3_在处理器中获取HttpServletRequest和HttpServletResponse对象

将处理器的参数设置为请求和响应：

 @RequestMapping("/getRes")
     public String getRequestAndResponse(HttpServletRequest request, HttpServletResponse response){
         System.out.println(request.getCookies());
         System.out.println(response.getContentType());
         return "success";
     }