websocket cdi inject problem

@WebServlet(urlPatterns = "/copylobby", asyncSupported = true, loadOnStartup = 1)
public class CopyOfWebSocketLobbyServlet extends WebSocketServlet implements
		IWebSocketLobby {

	private static final long serialVersionUID = 2844592471347413432L;

	private final Logger LOGGER = LoggerFactory.getLogger(getClass().getName());

	@Inject
	private ObjectMapper jsonProvider;

	public void init() throws ServletException {
		LOGGER.info("Initialize Lobby WebSocket servlet");
		super.init();
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * org.apache.catalina.websocket.WebSocketServlet#createWebSocketInbound
	 * (java.lang.String, javax.servlet.http.HttpServletRequest)
	 */
	@Override
	protected StreamInbound createWebSocketInbound(String arg0,
			HttpServletRequest request) {
		// do sth...

	}

	@Override
	public void addConnection(LobbyKey lobbyKey,
			AbstractLobbyMessageInbound lobbyConnection) {
		LOGGER.info("adding a connection + {}", jsonProvider.getClass()
				.getSimpleName());

	}

	@Override
	public void removeConnection(LobbyKey lobbyKey,
			AbstractLobbyMessageInbound lobbyConnection) {
		LOGGER.info("removing a connection + {}", jsonProvider.getClass()
				.getSimpleName());

	}

	@Override
	public void processTextCommand(String jsonCommand,
			AbstractLobbyMessageInbound lobbyConnection) {
		LOGGER.info("processing a message: |{}|", jsonCommand);
		LOGGER.info("message + {}", jsonProvider.getClass().getSimpleName());
	}
}