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javasessionspring-mvcservletshttpsession

Spring MVC - Session differences

Are there any differences between getting session through HttpServletRequest.getSession() and HttpSession injected in controller's method?

Solution

  • Basically there is no diffrerence between the session object injected into a Spring MVC controller:

    @RequestMapping(value = "/somepath", method = RequestMethod.POST)
@ResponseBody
public JsonResponse someMethod (HttpSession session)
{
 // play with session attributes
}

    And the session object retrieved from the HttpServletRequest:

    @RequestMapping(value = "/somepath", method = RequestMethod.POST)
@ResponseBody
public JsonResponse someMethod (HttpServletRequest request)
{
  Session session = request.getSession();
  // You are playin with the same session attributes.
}

    The former style just provide you with a facility to get the contextual HttpSession object by injecting it as a controller argument so that Spring takes care of the all the dirty stuff for you.