如何使用一个根上下文创建两个AbstractAnnotationConfigDispatcherServletInitializer's？

public class MyAppInitializer1 extends AbstractAnnotationConfigDispatcherServletInitializer {
    
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{RootConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{ServletConfig1.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/servlet1/*"};
    }
}

public class MyAppInitializer2 extends AbstractAnnotationConfigDispatcherServletInitializer {
    
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{RootConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{ServletConfig2.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/servlet2/*"};
    }
}

public class MyApp {
    
    public static void main(String[] args) {
        AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
        rootContext.register(RootConfig.class);
        
        AnnotationConfigDispatcherServletInitializer[] initializers = new AnnotationConfigDispatcherServletInitializer[]{
            new MyAppInitializer1(),
            new MyAppInitializer2()
        };
        
        for (AnnotationConfigDispatcherServletInitializer initializer : initializers) {
            initializer.onStartup(rootContext);
        }
    }
}