spring boot websocket 心跳代码

好的，关于您的问题，以下是一个示例spring boot websocket心跳代码:

@Component
public class WebSocketHeartbeatHandler implements HandshakeInterceptor, WebSocketHandler {

    private static final Logger LOGGER = LoggerFactory.getLogger(WebSocketHeartbeatHandler.class);

    private static final String HEARTBEAT_CONTENT = "heartbeat";
    private static final int HEARTBEAT_INTERVAL = 10000; // 10s

    private ScheduledExecutorService executorService;

    private volatile boolean isBusy = false;

    @Override
    public boolean beforeHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
                                   Map<String, Object> attributes) throws Exception {
        LOGGER.debug("before handshake");
        return true;
    }

    @Override
    public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response, WebSocketHandler wsHandler,
                               @Nullable Exception exception) {
        LOGGER.debug("after handshake");
        startExecutorService(wsHandler);
    }

    @Override
    public void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
        if (HEARTBEAT_CONTENT.equals(message.getPayload())) {
            LOGGER.debug("received heartbeat message from client");
            isBusy = false;
        }
    }

    @Override
    public void handleBinaryMessage(WebSocketSession session, BinaryMessage message) throws Exception {

    }

    @Override
    public void handlePongMessage(WebSocketSession session, PongMessage message) throws Exception {
        LOGGER.debug("received pong message from client");
        isBusy = false;
    }

    @Override
    public void handleTransportError(WebSocketSession session, Throwable exception) throws Exception {
        LOGGER.error("websocket transport error", exception);
        isBusy = false;
        executorService.shutdownNow();
    }

    @Override
    public void afterConnectionClosed(WebSocketSession session, CloseStatus closeStatus) throws Exception {
        LOGGER.debug("connection closed");
        isBusy = false;
        executorService.shutdownNow();
    }

    @Override
    public boolean supportsPartialMessages() {
        return false;
    }

    private void startExecutorService(WebSocketHandler wsHandler) {
        if (executorService == null) {
            executorService = Executors.newSingleThreadScheduledExecutor();
            executorService.scheduleWithFixedDelay(() -> {
                if (isBusy) {
                    LOGGER.warn("no response from client, closing session");
                    wsHandler.afterConnectionClosed(null, CloseStatus.GOING_AWAY);
                    return;
                }
                isBusy = true;
                try {
                    LOGGER.debug("sending heartbeat message to client");
                    wsHandler.sendMessage(new TextMessage(HEARTBEAT_CONTENT));
                } catch (Exception e) {
                    LOGGER.error("failed to send heartbeat message", e);
                    isBusy = false;
                    wsHandler.afterConnectionClosed(null, CloseStatus.SERVER_ERROR);
                }
            }, HEARTBEAT_INTERVAL, HEARTBEAT_INTERVAL, TimeUnit.MILLISECONDS);
        }
    }
}

此示例代码启动一个单线程调度程序，定期向客户端发送心跳消息，并处理来自客户端的心跳消息、二进制消息和传输错误。要使用此代码，必须将其声明为 WebSocket 的标准处理程序，并将其配置为使用您的 spring boot 应用程序中的 WebSocket。