a-tuoheng-device/src/main/java/com/ruoyi/device/websocket/StatisticsWebSocket.java

package com.ruoyi.device.websocket;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import jakarta.websocket.*;
import jakarta.websocket.server.ServerEndpoint;
import java.util.concurrent.CopyOnWriteArraySet;

@Component
@ServerEndpoint("/websocket/statistics")
public class StatisticsWebSocket {

    private static final Logger log = LoggerFactory.getLogger(StatisticsWebSocket.class);

    private Session session;

    private static final CopyOnWriteArraySet<StatisticsWebSocket> sessions = new CopyOnWriteArraySet<>();

    @OnOpen
    public void onOpen(Session session) {
        this.session = session;
        sessions.add(this);
        log.info("WebSocket连接建立: sessionId={}", session.getId());
    }

    @OnClose
    public void onClose() {
        sessions.remove(this);
        if (session != null) {
            log.info("WebSocket连接关闭: sessionId={}", session.getId());
        } else {
            log.info("WebSocket连接关闭: session为null");
        }
    }

    @OnMessage
    public void onMessage(String message) {
        log.info("收到WebSocket消息: sessionId={}, message={}", session.getId(), message);
    }

    @OnError
    public void onError(Session session, Throwable error) {
        log.error("WebSocket错误: sessionId={}, error={}", session.getId(), error.getMessage(), error);
    }

    private void sendMessage(String message) {
        try {
            if (session != null && session.isOpen()) {
                session.getBasicRemote().sendText(message);
            }
        } catch (Exception e) {
            log.error("发送WebSocket消息失败: error={}", e.getMessage(), e);
        }
    }

    public static void broadcast(String message) {
        for (StatisticsWebSocket ws : sessions) {
            ws.sendMessage(message);
        }
    }
}