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我目前正在使用 Glassfish 4 和“板载”实现测试 Websockets,但无法发送或接收任何消息,尽管遵循Java EE 7 教程 - 发送和接收消息如何使用 JSR 356 API 构建 Java WebSocket 应用程序等教程。我想实现一个简单的客户端服务器通信,所以我只有一个

服务器:

@ServerEndpoint("/echotest")
public class Server {
    private static final Logger LOGGER = LoggerFactory.getLogger(Server.class);

    @OnOpen
    public void onOpen(Session session) {
        LOGGER.info("OnOpen invoked by Session '{}'.", session.getId());

        try {
            session.getBasicRemote().sendText("Hello Client!");
        } catch (IOException ex) {
            LOGGER.error("Message delivery failed.", ex);
        }
    }

    @OnClose
    public void onClose(Session session, CloseReason closeReason) {
        LOGGER.info("OnClose invoked by Session '{}'; Reason: {}.", session.getId(), closeReason.getReasonPhrase());
    }

    @OnMessage
    public void onMessage(Session session, String msg) {
        LOGGER.info("OnMessage invoked by Session '{}'; Message: {}.", session.getId(), msg);
    }
}

和一个客户:

@ClientEndpoint
public class Client {

    private static CountDownLatch latch;
    private static final Logger LOGGER = LoggerFactory.getLogger(Client.class);

    @OnOpen
    public void onOpen(Session session) {
        LOGGER.info("OnOpen invoked by Session '{}'.", session.getId());

        try {
            session.getBasicRemote().sendText("Hello Server!");
        } catch (IOException ex) {
            LOGGER.error("Message delivery failed.", ex);
        }
    }

    @OnClose
    public void onClose(Session session, CloseReason closeReason) {
        LOGGER.info("OnClose invoked by Session '{}'; Reason: {}.", session.getId(), closeReason.getReasonPhrase());
    }

    @OnMessage
    public void onMessage(Session session, String msg) {
        LOGGER.info("OnMessage invoked by Session '{}'; Message: {}.", session.getId(), msg);
    }

    public static void main(String[] args) {
        latch = new CountDownLatch(1);

        WebSocketContainer container = ContainerProvider.getWebSocketContainer();
        try {
            container.connectToServer(Client.class, new URI("ws://localhost:8080/Tstr/echotest"));
            latch.await();

        } catch (DeploymentException | URISyntaxException | InterruptedException | IOException e) {
            LOGGER.error("Connection error occured!", e);
        }
    }
}

Websocket 可用,我可以连接到服务器(更改 URI 会导致 404 握手错误),但不会调用任何(服务器端)方法,我得到的唯一日志消息是:

INFO: OnOpen invoked by Session 'acc92925-6682-4414-9e78-cf60a624b014'.

在客户端。我希望服务器至少记录 onOpen 调用。使用带有 Netbeans 8 的(未改动的)Glassfish 4 进行此测试。

有什么建议为什么没有交换消息?

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1 回答 1

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你的代码对我有用,但是我不得不用这个替换 Logger (slf4j?)java.util.logging.Logger

于 2014-06-18T11:27:24.960 回答