2026-01-06 zwy 优化飞行轨迹数据存储时，对json数据转对象的代码。

zhaowenyu

2026-01-06 4c81bf56309588672a166511d451aa20ce21c604

 ard-work/src/main/java/com/ard/work/component/websocket/WebSocketSessionManager.java

@@ -28,4 +28,9 @@
    public static int getOnlineUserCount() {
        return ONLINE_USER_SESSIONS.size();
    }

    public static boolean containsUser(Long userId) {
        return ONLINE_USER_SESSIONS.containsKey(userId);
    }

}