spring integration

Hi, 
I am trying to integrate spring in my Vaadin application.
I am using vaadin multi-prject demo application (backend, ui, production and widgset)
WildFly start correctly but I've the erro: Request was not handled by any registered handler.

can someone help me ?

My UI class:
@Viewport("user-scalable=no,initial-scale=1.0")
@Theme("myopenchattheme")
@SpringUI(path = "/*")
@Widgetset("net.teamteck.MyOpenChat.MyOpenChatAppWidgetset")
public class MyOpenChatUI extends UI {

    private AccessControl accessControl = new BasicAccessControl();

    @Override
    protected void init(VaadinRequest vaadinRequest) {
    ...
    }
    
    @WebListener
    public static class MyContextLoaderListener extends ContextLoaderListener {
    }
    
    ...        
    
    @Configuration
    @EnableVaadin
    @ComponentScan("net.teamteck.MyOpenChat.backend.repository")
    public static class MyConfiguration {
        @Bean
        public DataService dataService () {
            return new DataServiceImpl();
        }
    }    
    
    @WebServlet(urlPatterns = "/*", name = "MyOpenChatUIServlet", asyncSupported = true)
    public static class MyOpenChatUIServlet extends SpringVaadinServlet  {
    }

}

My applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context 
                           http://www.springframework.org/schema/context/spring-context-4.1.xsd">

    <bean class="net.teamteck.MyOpenChat.MyOpenChatUI.MyConfiguration" />
    <!-- <context:component-scan base-package="net.teamteck.MyOpenChat" /> -->
</beans>

Can you set a breakpoint in the method "init" of class "MyOpenChatUI"?
So you can check if this method is executed.

And, create a constructor for this class, and set a breakpoint in it, to check if this class is created

<!-- <context:component-scan base-package="net.teamteck.MyOpenChat" /> -->

You commented out this line,
I guess that maybe the Spring "component-scan" function is not working,
so, your UI class will not be recognized as a Bean, and not be created automatically,
and of course, it can not handle your http request