SpringBoot集成WebSocket

<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-websocket</artifactId>
</dependency>

添加WebSocketConfiguration配置

@Configuration
public class WebSocketConfiguration {
    @Bean
    public ServerEndpointExporter serverEndpointExporter() {
        return new ServerEndpointExporter();
    }
}

主要逻辑类

@Component
@Slf4j
@ServerEndpoint("/websocket/{userId}")
public class WebSocket {
    /**
     * 线程安全的无序的集合
     */
    private static final CopyOnWriteArraySet<Session> SESSIONS = new CopyOnWriteArraySet<>();

    /**
     * 存储在线连接数
     */
    private static final Map<String, Session> SESSION_POOL = new HashMap<>();

    @OnOpen
    public void onOpen(Session session, @PathParam(value = "userId") String userId) {
        try {
            SESSIONS.add(session);
            SESSION_POOL.put(userId, session);
            log.info("总连接个数: " + SESSIONS.size());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @OnClose
    public void onClose(Session session) {
        try {
            SESSIONS.remove(session);
            log.info("连接断开,总数为: " + SESSIONS.size());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @OnMessage
    public void onMessage(String message, Session session) {
        log.info("收到客户端消息: " + message);
        sendOther(message, session);
    }

    /**
     * 此为广播消息
     *
     * @param message 消息
     */
    public void sendAllMessage(String message) {
        log.info("广播消息: " + message);
        for (Session session : SESSIONS) {
            try {

                if (session.isOpen()) {
                    session.getAsyncRemote().sendText(message);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 此为单点消息
     *
     * @param userId  用户编号
     * @param message 消息
     */
    public void sendOneMessage(String userId, String message) {
        Session session = SESSION_POOL.get(userId);
        if (session != null && session.isOpen()) {
            try {
                synchronized (session) {
                    log.info("单点消息: " + message);
                    session.getAsyncRemote().sendText(message);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * 此为单点消息(多人)
     *
     * @param userIds 用户编号列表
     * @param message 消息
     */
    public void sendMoreMessage(String[] userIds, String message) {
        for (String userId : userIds) {
            Session session = SESSION_POOL.get(userId);
            if (session != null && session.isOpen()) {
                try {
                    log.info("单点消息(多个): " + message);
                    session.getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }

    public void sendOther(String message, Session session) {
        SESSIONS.forEach((sessionItem -> {
            if (!session.getId().equals(sessionItem.getId())) {
                try {
                    sessionItem.getAsyncRemote().sendText(message);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }));
    }
}