问题：@ServerEndpoint类中的@Autowired bean为空

我如何确保下面的WebSocketController类将被注入bean，那怎么使它由Spring管理？我可以连接到websocket，这样它就可以工作，但是gameService在WebSocketController类实例中始终为null，因此我认为它是由tomcat创建的，而不是Spring创建的。

我正在使用Spring Boot。我只需要弄清楚如何将bean注入此websocket控制器类。

WebSocketController类

@Component
@ServerEndpoint("/sock")
public class WebSocketController {

    @Autowired
    private GameService gameService;

    private static Set<Session> clients = Collections.synchronizedSet(new HashSet<Session>());

    @OnMessage
    public void handleMessage(Session session, String message) throws IOException {

        session.getBasicRemote().sendText(
                "Reversed: " + new StringBuilder(message).reverse());
    }

    @OnOpen
    public void onOpen(Session session) {
        clients.add(session);
        System.out.println("New client @"+session.getId());
        if (gameService == null) System.out.println("game service null");
    }

    @OnClose
    public void onClose(Session session) {
        clients.remove(session);
        System.out.println("Client disconnected @" + session.getId());
    }
}

GameService接口和实现

public interface GameService {
    List<Character> getCharacters();
}

@Service
public class GameServiceMockImpl implements GameService {

    @Override
    public List<Character> getCharacters() {
        List<Character> list = new ArrayList<>();
        list.add(new Character("aaa","1.png",100));
        list.add(new Character("aaa","2.jpg",100));
        list.add(new Character("aaa","3.jpg",100));
        return list;
    }
}

应用类别

@SpringBootApplication
public class App  {

    public static void main(String args[]){
        SpringApplication.run(App.class,args);
    }

    @Bean
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter();
    }

}

编辑：

使用Spring 4 WebSockets根本不起作用，我什至无法通过浏览器进行连接。

@Configuration
@EnableWebSocket
public class WebSocketConfig implements WebSocketConfigurer {

    @Override
    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
        registry.addHandler(myHandler(), "/myHandler");
    }

    @Bean
    public WebSocketHandler myHandler() {
        return new MyHandler();
    }

}


public class MyHandler extends TextWebSocketHandler {

    @Override
    public void handleTextMessage(WebSocketSession session, TextMessage message) {
        System.out.println(message.getPayload());
    }

}