如何使用Java Milo进行WebSocket协议的通信

在Java中使用Milo进行WebSocket协议的通信可以通过以下步骤实现：

添加Milo的依赖项到你的项目中。你可以在Milo的GitHub仓库中找到相关的依赖配置。
创建一个WebSocket客户端连接到OPC UA服务器。你可以使用以下代码来创建一个WebSocket客户端连接：

WebSocketClientConfig config = WebSocketClientConfig.builder()
    .setConnectTimeout(5000)
    .build();

OpcUaClientConfig opcUaClientConfig = OpcUaClientConfig.builder()
    .setApplicationName(LocalizedText.english("Test"))
    .setApplicationUri("urn:test:test")
    .setEndpointUrl("opc.tcp://localhost:12685/test")
    .setRequestTimeout(uint(5000))
    .build();

CompletableFuture<OpcUaClient> future = OpcUaClient.create(
    opcUaClientConfig,
    config
).connect();

发送和接收消息。一旦连接建立，你可以使用以下代码来发送和接收消息：

future.thenAccept(client -> {
    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSessionListener(new SessionListener() {
        @Override
        public void onSessionActivated(OpcUaClient client) {
            //Session activated
        }

        @Override
        public void onSessionClosed(OpcUaClient client, Session session) {
            //Session closed
        }
    });

    client.addRequestListener(new RequestListener() {
        @Override
        public void onRequestsClosed(OpcUaClient client, List<CompletableFuture<? extends UaRequest>> futures) {
            //Requests closed
        }
    });

    client.addNotificationListener(notificationListener);

    client.addMonitoredItemListener(new MonitoredItemListener() {
        @Override
        public void onDataChange(UaMonitoredItem item, DataValue newValue, DataValue oldValue) {
            //Data changed
        }
    });

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(createSubscription());

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);

    client.addSubscriptionListener(subscriptionListener);

    client.addSubscription(subscription);
});

通过上面的步骤，你可以使用Java Milo进行WebSocket协议的通信。在实际应用中，你可能需要根据具体的需求进一步扩展和优化代码。

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