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：

1. 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。

2. 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(); 

3. 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。