Best way for imlement Strategy design pattern in Spring

I want implement strategy design pattern in spring boot application. I create BeanPostProcessor for construct strategy resolver:

@Component
public class HandlerInAnnotationBeanPostProcessor implements BeanPostProcessor {

    private final UnpHandlersResolver unpHandlersResolver;

    public HandlerInAnnotationBeanPostProcessor(UnpHandlersResolver unpHandlersResolver) {
        this.unpHandlersResolver = unpHandlersResolver;
    }

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        Annotation[] annotations = bean.getClass().getAnnotations();
        for (Annotation annotation : annotations) {
            if (annotation instanceof HandlerIn) {

                if (bean.getClass() != UnpHandler.class)
                    throw new RuntimeException("Not UnpHandler bean annotated by HandlerIn");

                SmevMessageType[] type = ((HandlerIn) annotation).type();
                for (SmevMessageType smevMessageType : type) {
                    unpHandlersResolver.setHandler(smevMessageType, (UnpHandler) bean);
                }
            }
        }
        return bean;
    }
}

And I create resolver:

@Slf4j
@Component
public class UnpHandlersResolverImpl implements UnpHandlersResolver {

    private Map<SmevMessageType, UnpHandler> map = new HashMap<>();

    @Override
    public void setHandler(SmevMessageType messageType, UnpHandler unpHandler) {
        map.put(messageType, unpHandler);
    }

    @Override
    public UnpHandler getUnpHandler(SmevMessageType type) {
        UnpHandler sendRequestHandler = map.get(type);
        if (sendRequestHandler == null)
            throw new IllegalArgumentException("Invalid SendRequestHandler type: " + type);
        return sendRequestHandler;
    }
}

My BeanPostProcessor scan all beans with annotation HandlerIn and add to resolver's mup. I think it's wrong to do that:

unpHandlersResolver.setHandler(smevMessageType, (UnpHandler) bean);

But I not understand how can I add find beans to resolver. Before this implementation I faind beans in @Postconstruct method of resolver like:

context.getBeansWithAnnotation(HandlerIn.class);

But in this solution I have context in resolver and I think is bad.

Tell me how to properly implement what I want? In short, I want to have a set of classes that implement different behaviors. And the class that controls them. Give the class a parameter so that he chooses the right strategy and gives it to me. Like this:

Handler handler = handlersResolver.getHandler(messageType);
Result result = handler.somthing(param);