Spring static html

@EnableWebMvc
@Configuration
@ComponentScan({ "by.bsuir" })
public class SpringWebConfig extends WebMvcConfigurerAdapter {
 
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
    }
 
}

public class SpringWebInitializer implements WebApplicationInitializer {
 
    @Override
    public void onStartup(ServletContext container) throws ServletException {
        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(SpringWebConfig.class);
        ctx.setServletContext(container);
        ServletRegistration.Dynamic servlet = container.addServlet("dispatcher", new DispatcherServlet(ctx));
        servlet.setLoadOnStartup(1);
        servlet.addMapping("/");
    }
}

@Controller
public class MainController {
 
    @RequestMapping(value = {"/", "/index", "/welcome"}, method = RequestMethod.GET)
    public String defaultPage() {
        return "/resources/index.html";
    }
}

@Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
    }