Spring mvc中的session

在spring mvc中，对session的操作有如下两个方法：

@RequestMapping(value = "/test", method = RequestMethod.POST)
 @ResponseBody
 public JsonResponse getSessionIncontroller
         (@RequestBody String jsonReqString ,HttpSession session) 
{

  session.setAttribute("success" , "successfully accessed");
  return jsonResponse;
 }

   或者就是直接通过sevrlet api去获得，如：
  

@RequestMapping(value = "/test", method = RequestMethod.POST)
 @ResponseBody
 public JsonResponse getSessionIncontroller
         (@RequestBody String jsonReqString ,HttpServletRequest request) 
{
  Session session = request.getSession();
  session.setAttribute("success" , "successfully accessed");
  return jsonResponse;
 }

    也可以创建一个component为session的，然后进行封装为session的scope，然后再注入到controller中，如：
  

@Component
@Scope("session")
public class Profile
{

 private String userName;
 private String country;
 .......
}
@Controller
@Scope("request")
public class UserController
{
 @Autowired
 private Profile profile;
 
 @RequestMapping("/myOrders")
 public String myOrders(@RequestParam("userId") int userId)
 {
 
 }
}