无法在tomcat中加载调度程序servlet？

Question

服务器添加项目但是当它正在运行时，调度程序servlet没有加载这是我的配置文件，如下所示我正在使用加载了dependnecy的maven项目。

public class ADInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] { ADConfiguration.class };
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] { "/" };
    }

    @Override
    protected Filter[] getServletFilters() {
        return null;
    }

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        /*// TODO Auto-generated method stub
        super.onStartup(servletContext);*/

        AnnotationConfigWebApplicationContext ctx = new AnnotationConfigWebApplicationContext();
        ctx.register(ADConfiguration.class);
        ctx.setServletContext(servletContext);

        ServletRegistration.Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));

        servlet.setLoadOnStartup(1);
        servlet.addMapping("/");
    }
    }
public class ADConfiguration extends WebMvcConfigurerAdapter{

    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/views/");
        viewResolver.setSuffix(".jsp");
        registry.viewResolver(viewResolver);
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        registry.addResourceHandler("/static/**").addResourceLocations("/static/");
        //registry.addResourceHandler("style/css/**").addResourceLocations("style/css/");

    }
    }