I am developing a web application using spring MVC. I just want a simple example of how to do session management in this. I have seen lot of forums but I am not able to get a clear picture of this
My requirement is
I have an object, which I would like to be accessible in all controllers and JSP's I would like to set that in the controller and get that in JSP
I am looking for something like
Session.setAtribute(); Could you please let me know a very simple instance . Thank you
There are different ways of accessing servlet session in Spring MVC. But I think this one is the one that best suits your problem. You can create a session scoped bean, which holds your desired info:
@Component("myObjectHolder") @Scope(WebApplicationContext.SCOPE_SESSION) public class MyObjectHolderImpl implements MyObjectHolder { private long userId; private String username; private Theme theme; // Getters & Setter } Then, you can access to it from other beans:
@Controller public class MyController { @Autowired private MyObjectHolder myObjectHolder; @RequestMapping public ModelAndView switchTheme(String themeId) { ... Theme newTheme = themeService.get(themeId); myObjectHolder.setTheme(newTheme); ... } } You can access directly from your view too, but you must configure it:
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> ... <property name="exposedContextBeanNames" value="myObjectHolder" /> </bean> And in your JSP:
Hi ${myObjectHolder.username}, you switched application theme to ${myObjectHolder.theme.name} 
The simplest approach is to access HttpSession directly by injecting it into your handler method:
@RequestMapping("/page") public ModelAndView page(HttpSession session) { session.getAttribute("foo"); } 
HttpSession whenever you need it :-). Also read a little bit more, there are much more convenient ways to access HTTP session attributes in Spring MVC, but requiring a little bit of setup upfront.