import org.springframework.hateoas.ExposesResourceFor; //导入依赖的package包/类
private void registerControllerClass(Class<?> controllerType) {

		Assert.notNull(controllerType, "Controller type must nor be null!");
//		ExposesResourceFor annotation = AnnotationUtils.findAnnotation(controllerType, ExposesResourceFor.class);
		ExposesResourceFor annotation = controllerType.getAnnotation(ExposesResourceFor.class);

		if (annotation != null) {
			entityToController.put(annotation.value(), controllerType);
		} else {
			throw new IllegalArgumentException(String.format("Controller %s must be annotated with @ExposesResourceFor!",
					controllerType.getName()));
		}
	}
 

import org.springframework.hateoas.ExposesResourceFor; //导入依赖的package包/类
@Override
public LinkBuilder linkFor(Class<?> entity, Object... parameters) {

	Assert.notNull(entity);

	Class<?> controllerType = entityToController.get(entity);

	if (controllerType == null) {
		throw new IllegalArgumentException(String.format(
				"Type %s is not managed by a Spring MVC controller. Make sure you have annotated your controller with %s!",
				entity.getName(), ExposesResourceFor.class.getName()));
	}

	return linkBuilderFactory.linkTo(controllerType, parameters);
}