Spring MVC - Session Differences

Basically there is no difference between an object session

injected into a Spring MVC controller:

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

      

        
        
        
      

    

And an object session

derived from 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.
}

      

        
        
        
      

    

In the old style, you are given the option to get the context object HttpSession

by injecting it as a controller argument so that Spring takes care of all the dirty things for you.