public class DemoWebAppInitializer 

  extends AbstractAnnotationConfigDispatcherServletInitializer {

​

  @Override 

  protected String[] getServletMappings() { 

    return new String[] { "/" }; // Map DispatcherServlet to /

  }

  @Override 

  protected Class<?>[] getRootConfigClasses() { 

    return new Class<?>[] { SecurityConfig.class, DataServiceConfig.class }; 

  }

  @Override 

  protected Class<?>[] getServletConfigClasses() { // Specify configuration class

    return new Class<?>[] { WebConfig.class }; 

  }

  @Override 

  protected Filter getServletFilters() { 

    CharacterEncodingFilter cef = new CharacterEncodingFilter(); 

    cef.setEncoding("UTF-8");

    cef.setForceEncoding(true); 

    return new Filter{ new HiddenHttpMethodFilter(), cef}; 

  }

}