Question

我目前正在使用Glassfish 4和＃34; on＆＃34;来测试Websockets。实施但不能发送或接收任何消息，尽管遵循The Java EE 7 Tutorial - Sending and Receiving Messages或How to build Java WebSocket Applications Using the JSR 356 API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是可用的，我可以连接到服务器（更改URI会导致404手铐错误），但不会调用（服务器端）方法，并且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 invokation。使用（未触动的）Glassfish 4和Netbeans 8进行此测试。

为什么没有交换消息的任何建议？

Answer 1

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

Websocket - ServerEndpoint和ClientEndpoint不交换消息

1 个答案: