autowired 注入为null

anlan668

在spring boot系统里的聊天系统里运行数据库语句，autowired 注入为null运行不起来，求助
代码在这

@Component
@ServerEndpoint(value = "/chat")
public class ChatEndpoint {
    @Autowired
    private AuctionMapper auctionMapper;


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



    @OnOpen
    public void onOpen(Session session) {
        clients.add(session);
    }
    @OnClose
    public void onClose(Session session) {
        clients.remove(session);
    }



    @OnMessage
    public void onMessage(String message, Session session) throws IOException, SQLException {
        System.out.println("我是mess"+message);
        JSONObject json = new JSONObject(message);
        String text = json.getString("text");
        String senderId = String.valueOf(json.getInt("senderId"));
        String receiverId = String.valueOf(json.getInt("receiverId"));
        Message mg = new Message();
        mg.setSenderId(senderId);
        mg.setReceiverId(receiverId);
        mg.setJsonMsg(text);

        auctionMapper.InIoMessage(mg);

codestar

检查AuctionMapper上是否存在@mapper或@Component注解
检查xml文件中namespace是否正确
检查启动类上@MapperScan注解中的basePackages是否正确