ViewExpiredException error page not shown

: 2

import javax.faces.context.ExceptionHandler;
import javax.faces.context.ExceptionHandlerFactory;

public class ViewExpiredExceptionExceptionHandlerFactory extends
        ExceptionHandlerFactory {

    private ExceptionHandlerFactory parent;

    public ViewExpiredExceptionExceptionHandlerFactory(
            ExceptionHandlerFactory parent) {
        this.parent = parent;
    }

    @Override
    public ExceptionHandler getExceptionHandler() {
        return new ViewExpiredExceptionExceptionHandler(
            parent.getExceptionHandler());
    }
}

public class ViewExpiredExceptionExceptionHandler extends
        ExceptionHandlerWrapper {

    private ExceptionHandler wrapped;

    public ViewExpiredExceptionExceptionHandler(ExceptionHandler wrapped) {
        this.wrapped = wrapped;
    }

    @Override
    public ExceptionHandler getWrapped() {
        return this.wrapped;
    }

    @Override
    public void handle() throws FacesException {
        for (Iterator<ExceptionQueuedEvent> i = 
                getUnhandledExceptionQueuedEvents().iterator(); i.hasNext();) {
            ExceptionQueuedEvent event = i.next();
            ExceptionQueuedEventContext context = (ExceptionQueuedEventContext)
                event.getSource();
            Throwable t = context.getException();
            if (t instanceof ViewExpiredException) {
                ViewExpiredException vee = (ViewExpiredException) t;
                FacesContext facesContext = FacesContext.getCurrentInstance();
                Map<String, Object> requestMap = facesContext
                    .getExternalContext().getRequestMap();
                NavigationHandler navigationHandler = facesContext
                    .getApplication().getNavigationHandler();
                try {
                    // Push some useful stuff to the request scope for use in
                    // the page
                    requestMap.put("currentViewId", vee.getViewId());
                    navigationHandler.handleNavigation(facesContext, null,
                        "/index");
                    facesContext.renderResponse();
                } finally {
                    i.remove();
                }
            }
        }
        // At this point, the queue will not contain any ViewExpiredEvents.
        // Therefore, let the parent handle them.
        getWrapped().handle();
    }
}

faces-config.xml :

<factory>
    <exception-handler-factory>path.to.class.ViewExpiredExceptionExceptionHandlerFactory</exception-handler-factory>

, .   

, Omnifaces , , , , , 404 , . -config.xml :

<factory>
<exception-handler-factory>org.omnifaces.exceptionhandler.FullAjaxExceptionHandlerFactory</exception-handler-factory>

. . FullAjaxExceptionHandlerFactory - omnifaces http://showcase.omnifaces.org/exceptionhandlers/FullAjaxExceptionHandler;jsessionid=sOwX0FVqcY-InUhvDWEMksfQ.

.