websocket获取httpsession

Question

import jakarta.servlet.http.HttpSession;
import jakarta.websocket.HandshakeResponse;
import jakarta.websocket.server.HandshakeRequest;
import jakarta.websocket.server.ServerEndpointConfig;

public class GetHttpSessionConfig extends ServerEndpointConfig.Configurator {
    @Override
    public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response) {
        HttpSession httpSession = (HttpSession) request.getHttpSession();
        sec.getUserProperties().put(HttpSession.class.getName(),httpSession);
    }
}

上面是配置的configurator放在下面代码使用

import jakarta.websocket.*;
import jakarta.websocket.server.ServerEndpoint;
import tool.GetHttpSessionConfig;
import java.io.IOException;
import java.util.Set;
import java.util.concurrent.CopyOnWriteArraySet;


@ServerEndpoint(value = "/tow",configurator = GetHttpSessionConfig.class)
public class tow {
    private static final Set<Session> clients = new CopyOnWriteArraySet<>();

    @OnOpen
    public void onOpen(Session session, EndpointConfig config) {
        clients.add(session);
    }

    @OnMessage
    public void onMessage(String message, Session session) throws IOException {
        for (Session client : clients) {
            if (client != session) { // Avoid sending message back to sender
                client.getBasicRemote().sendText(message); // Broadcast message to all clients
            }
        }
        System.out.println(message);
    }

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

    @OnError
    public void onError(Throwable error) {
        System.err.println("WebSocket Error: " + error);
    }
}

一添加

configurator = GetHttpSessionConfig.class

就报错为什么?
下面是报错图片

不添加
configurator = GetHttpSessionConfig.class就没事正常连接，我的本意是获取httpsession，求解答