import io.undertow.servlet.api.ServletContainerInitializerInfo; //导入依赖的package包/类
private void registerServletContainerInitializerToDriveServletContextInitializers(
		DeploymentInfo deployment, ServletContextInitializer... initializers) {
	ServletContextInitializer[] mergedInitializers = mergeInitializers(initializers);
	Initializer initializer = new Initializer(mergedInitializers);
	deployment.addServletContainerInitalizer(new ServletContainerInitializerInfo(
			Initializer.class,
			new ImmediateInstanceFactory<ServletContainerInitializer>(initializer),
			NO_CLASSES));
}
 

import io.undertow.servlet.api.ServletContainerInitializerInfo; //导入依赖的package包/类
private List<ServletContainerInitializerInfo> getServletContainerInitializers() {
    List<ServletContainerInitializerInfo> infos = new ArrayList<>();
    for (ServletContainerInitializer initializer : ServiceLoader.load(ServletContainerInitializer.class)) {
        HandlesTypes types = initializer.getClass().getAnnotation(HandlesTypes.class);
        infos.add(new ServletContainerInitializerInfo(
            initializer.getClass(),
            new ImmediateInstanceFactory<>(initializer),
            types == null ? Collections.emptySet() : new LinkedHashSet<>(Arrays.asList(types.value()))));
    }
    return infos;
}
 

import io.undertow.servlet.api.ServletContainerInitializerInfo; //导入依赖的package包/类
private static ServletContainerInitializerInfo sciInfo() {
    return new ServletContainerInitializerInfo(ContainerInitializer.class,
            new ImmediateInstanceFactory<>(new ContainerInitializer()),
            Collections.singleton(FrameworkStartupHandler.class));
}