Dependency Injection inside of HttpSessionListener implementation

Question

Problem: This injected dependency will always return 0 from SimpleController

1. Why does the context get lost for this bean when try

Answer 1

This is an answer here that shows the actual solution.

You should modify SessionCountListener like this, and the above example will work:

public class SessionCounterListener implements HttpSessionListener {

  @Autowired
  private SessionService sessionService;

  @Override
  public void sessionCreated(HttpSessionEvent arg0) {
    getSessionService(se).addOne();
  }

  @Override
  public void sessionDestroyed(HttpSessionEvent arg0) {
    getSessionService(se).removeOne();
  }

  private SessionService getSessionService(HttpSessionEvent se) {
    WebApplicationContext context = 
      WebApplicationContextUtils.getWebApplicationContext(
        se.getSession().getServletContext());
    return (SessionService) context.getBean("sessionService");
  } 
}