Vaadin Spring integration

Vaadin 6 / 7 / 8
1

Hi,
I use official spring addon for Spring Vaadin integration. Here is the code:

[code]
@Theme(“valo”)
@SpringUI
public class App extends UI {

@Override
protected void init(VaadinRequest vaadinRequest) {
}

public static void main(String[] args) throws Exception {
    AnnotationConfigWebApplicationContext webApplicationContext = new AnnotationConfigWebApplicationContext();
    webApplicationContext.register(AppConfig.class);

    Server webServer = new Server(8080);
    ServletContextHandler servletContextHandler = new ServletContextHandler(webServer, "/", true, true);
    servletContextHandler.addServlet(new ServletHolder(new SpringVaadinServlet()), "/");
    //servletContextHandler.addServlet(new ServletHolder(new VaadinServlet()), "/*");
    servletContextHandler.setInitParameter("UI", "App");
    servletContextHandler.addEventListener(new ContextLoaderListener(webApplicationContext));
    webServer.start();
    webServer.join();
}

}
[/code]But after the start of the application I get:

Problem accessing /.
Reason:Request was not handled by any registered handler.
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VaadinServlet is working properly.