Today i will write something about switching from FacesContext to  ServletContext (JSF to Servlet ), To getting The facesContext in Servlet Class or Controller.

Use This Method .
1.    public ExternalDemandController() {
      super();
      }
2 .    public void init(ServletConfig config) throws ServletException {
            super.init(config);
      }
3.    protected FacesContext getFacesContext(HttpServletRequest request, HttpServletResponse response) {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        if (facesContext == null) {
            FacesContextFactory contextFactory  = (FacesContextFactory)FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
            LifecycleFactory lifecycleFactory = (LifecycleFactory)FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
            Lifecycle lifecycle = lifecycleFactory.getLifecycle(LifecycleFactory.DEFAULT_LIFECYCLE);

            facesContext = contextFactory.getFacesContext(request.getSession().getServletContext(), request, response, lifecycle);
                    
        }
        return facesContext;
    }