参考前辈的踩坑记录https://blog.csdn.net/weixin_45411740/article/details/124275985?spm=1001.2014.3001.5502,我Hyb在2023-3-15调通了自己的Jav
参考前辈的踩坑记录https://blog.csdn.net/weixin_45411740/article/details/124275985?spm=1001.2014.3001.5502,我Hyb在2023-3-15调通了自己的JavaopcUaDemo。具体Java代码和KepServerEX延时补丁都在资源中。
第1步:安装激活KepServer,补丁在资源中,不详述。
第2步:在KepServer中做OpcUa配置。
2.1 先看桌面右下角有没EX图标
2.2 如果没有EX图标,要去开始菜单中找到KEPServerEX 6 Administration,点击打开它后,桌面右下角就会出现EX图标:
2.3 右键点击EX图标,选择“OPC UA 配置”,设置过程看这个动图:(一定要关注动图中192.168.10.60这个ip及端口的设置,它要与你代码中一致!)
第3步:在KepServer中设置用户名密码。
3.1 再一次点桌面右下角的EX图标,选择“设置”,点“用户管理器”,在Administrators右键选择“添加用户”。见图操作:
第4步:在KepServer中设置opcua匿名账户登录。
在KepServerEX界面,在“项目”右键,选择“属性”,选择“OPC UA”。在“客户端会话”、“允许匿名登录”中,选择“是”。如图:
以上KepServerEX设置完成后,就可以构建Java项目了。
第5步:首先搭建环境。下载Eclipse、配置Maven
上图分别对应:
5.1 从Maven下载安装包:apache-maven-3.9.0-bin.zip
5.2 配置Maven本地仓库在:conf/settings.xml
${MAVEN_HOME}/repoHyb
5.3 配置Maven镜像:从阿里云Maven镜像同步和下载jar
nexus-aliyun central Nexus aliyun Http://maven.aliyun.com/nexus/content/groups/public
5.4 在Eclipse中设置Maven安装路径
5.5 在Eclipse中设置Maven的配置文件
第6步:以上环境搭建好后,就可以正式coding了。
6.1 在eclipse中创建maven项目,并在pom.xml中配置Milo客户端依赖:
org.eclipse.milo sdk-client 0.6.3 org.eclipse.milo sdk-server 0.6.3
Milo是Eclipse旗下的一个物联网的项目,是一个高性能的OPC UA栈,提供了一组客户端和服务端的api,支持对实时数据的访问,监控,报警,订阅数据,支持事件,历史数据访问,和数据建模。官网https://projects.eclipse.org/projects/iot.milo
在Milo中大量的采用了java 8的新特性CompletableFuture来进行异步操作,Milo中有大量的操作都是直接返回CompletableFuture对象,所以jdk的版本必须要8.0,对CompletableFuture不太熟悉的可以先去了解CompletableFuture的相关概念在来看Milo的官方例子会轻松很多。
6.2 然后就是java代码,只有一个类TestOpcUA.java,代码全部在这一个java文件中。直接复制到你java文件中,不用再导入任何类,加个包名,直接可以运行。
import java.nio.file.Files;import java.nio.file.Path;import java.nio.file.Paths;import java.util.ArrayList;import java.util.List;import java.util.Objects;import java.util.concurrent.CountDownLatch;import java.util.concurrent.atomic.AtomicInteger;import org.eclipse.milo.opcua.sdk.client.OpcUaClient;import org.eclipse.milo.opcua.sdk.client.api.identity.AnonymousProvider;import org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaSubscription;import org.eclipse.milo.opcua.sdk.client.api.subscriptions.UaSubscriptionManager;import org.eclipse.milo.opcua.sdk.client.nodes.UaNode;import org.eclipse.milo.opcua.sdk.client.subscriptions.ManagedDataItem;import org.eclipse.milo.opcua.sdk.client.subscriptions.ManagedSubscription;import org.eclipse.milo.opcua.stack.core.AttributeId;import org.eclipse.milo.opcua.stack.core.Identifiers;import org.eclipse.milo.opcua.stack.core.UaException;import org.eclipse.milo.opcua.stack.core.security.SecurityPolicy;import org.eclipse.milo.opcua.stack.core.types.builtin.DataValue;import org.eclipse.milo.opcua.stack.core.types.builtin.DateTime;import org.eclipse.milo.opcua.stack.core.types.builtin.LocalizedText;import org.eclipse.milo.opcua.stack.core.types.builtin.NodeId;import org.eclipse.milo.opcua.stack.core.types.builtin.StatusCode;import org.eclipse.milo.opcua.stack.core.types.builtin.Variant;import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger;import org.eclipse.milo.opcua.stack.core.types.enumerated.MonitoringMode;import org.eclipse.milo.opcua.stack.core.types.enumerated.TimestampsToReturn;import org.eclipse.milo.opcua.stack.core.types.structured.MonitoredItemCreateRequest;import org.eclipse.milo.opcua.stack.core.types.structured.MonitoringParameters;import org.eclipse.milo.opcua.stack.core.types.structured.ReadValueId;public class TestOpcUA { private final static String endPointUrl = "opc.tcp://192.168.10.60:49320"; private static OpcUaClient createClient() throws Exception { //opc ua服务端地址 Path securityTempDir = Paths.get(System.getProperty("java.io.tmpdir"), "security"); Files.createDirectories(securityTempDir); if (!Files.exists(securityTempDir)) { throw new Exception("unable to create security dir: " + securityTempDir); } return OpcUaClient.create(endPointUrl, endpoints -> endpoints.stream().filter(e -> e.getSecurityPolicyUri().equals(SecurityPolicy.None.getUri())).findFirst(), configBuilder -> configBuilder.setApplicationName(LocalizedText.english("eclipse milo opc-ua client")).setApplicationUri("urn:eclipse:milo:examples:client") //访问方式 .setIdentityProvider(new AnonymousProvider()).setRequestTimeout(UInteger.valueOf(500)).build()); } private static void browsenode(OpcUaClient client, UaNode uaNode) throws Exception { List extends UaNode> nodes; if (uaNode == null) { nodes = client.getAddressSpace().browseNodes(Identifiers.ObjectsFolder); } else { nodes = client.getAddressSpace().browseNodes(uaNode); } for (UaNode nd : nodes) { //排除系统行性节点,这些系统性节点名称一般都是以"_"开头 if (Objects.requireNonNull(nd.getBrowseName().getName()).contains("_")) { continue; } System.out.println("Node= " + nd.getBrowseName().getName()); browseNode(client, nd); } } private static void readNode(OpcUaClient client) throws Exception { int namespaceIndex = 2; String identifier = "通道 1.设备 1.标记 1"; //节点 NodeId nodeId = new NodeId(namespaceIndex, identifier); //读取节点数据 DataValue value = client.readValue(0.0, TimestampsToReturn.Neither, nodeId).get(); //标识符 identifier = String.valueOf(nodeId.getIdentifier()); System.out.println(identifier + ": " + String.valueOf(value.getValue().getValue())); } private static void writeNodeValue(OpcUaClient client) throws Exception { //节点 NodeId nodeId = new NodeId(2, "通道 1.设备 1.标记 4"); Short i = 48; //创建数据对象,此处的数据对象一定要定义类型,不然会出现类型错误,导致无法写入 DataValue nowValue = new DataValue(new Variant(i), null, null); //写入节点数据 StatusCode statusCode = client.writeValue(nodeId, nowValue).join(); System.out.println("结果:" + statusCode.isGood()); } private static void subscribe(OpcUaClient client) throws Exception { AtomicInteger a = new AtomicInteger(); //创建发布间隔1000ms的订阅对象 client.getSubscriptionManager().createSubscription(1000.0).thenAccept(t -> { //节点 NodeId nodeId = new NodeId(2, "通道 1.设备 1.标记 1"); ReadValueId readValueId = new ReadValueId(nodeId, AttributeId.Value.uid(), null, null); //创建监控的参数 MonitoringParameters parameters = new MonitoringParameters(UInteger.valueOf(a.getAndIncrement()), 1000.0, null, UInteger.valueOf(10), true); //创建监控项请求 //该请求最后用于创建订阅。 MonitoredItemCreateRequest request = new MonitoredItemCreateRequest(readValueId, MonitoringMode.Reporting, parameters); List requests = new ArrayList<>(); requests.add(request); //创建监控项,并且注册变量值改变时候的回调函数。 t.createMonitoredItems(TimestampsToReturn.Both, requests, (item, id) -> item.setValueConsumer((it, val) -> { System.out.println("nodeid :" + it.getReadValueId().getNodeId()); System.out.println("value :" + val.getValue().getValue()); })); }).get(); //持续订阅 Thread.sleep(Long.MAX_VALUE); } // private static void managedSubscriptionEvent(OpcUaClient client) throws Exception {// final CountDownLatch eventLatch = new CountDownLatch(1);//// //处理订阅业务// handlerNode(client);//// //持续监听// eventLatch.await();// } private static void handlerNode(OpcUaClient client) { try { //创建订阅 ManagedSubscription subscription = ManagedSubscription.create(client); //你所需要订阅的key List key = new ArrayList<>(); key.add("通道 1.设备 1.标记 4"); key.add("通道 1.设备 1.标记 1"); List nodeIdList = new ArrayList<>(); for (String s : key) { nodeIdList.add(new NodeId(2, s)); } //监听 List dataItemList = subscription.createDataItems(nodeIdList); for (ManagedDataItem managedDataItem : dataItemList) { managedDataItem.addDataValueListener((t) -> { System.out.println(managedDataItem.getNodeId().getIdentifier().toString() + ":" + t.getValue().getValue().toString()); }); } } catch (Exception e) { e.printStackTrace(); } } private static class CustomSubscriptionListener implements UaSubscriptionManager.SubscriptionListener { private OpcUaClient client; CustomSubscriptionListener(OpcUaClient client) { this.client = client; } public void onKeepAlive(UaSubscription subscription, DateTime publishTime) { System.out.println("onKeepAlive"); } public void onStatusChanged(UaSubscription subscription, StatusCode status) { System.out.println("onStatusChanged"); } public void onPublishFailure(UaException exception) { System.out.println("onPublishFailure"); } public void onNotificationDataLost(UaSubscription subscription) { System.out.println("onNotificationDataLost"); } public void onSubscriptionTransferFailed(UaSubscription uaSubscription, StatusCode statusCode) { System.out.println("恢复订阅失败 需要重新订阅"); //在回调方法中重新订阅 handlerNode(client); } } private static void managedSubscriptionEvent(OpcUaClient client) throws Exception { final CountDownLatch eventLatch = new CountDownLatch(1); //添加订阅监听器,用于处理断线重连后的订阅问题 client.getSubscriptionManager().addSubscriptionListener(new CustomSubscriptionListener(client)); //处理订阅业务 handlerNode(client); //持续监听 eventLatch.await(); } public static void main(String[] args) throws Exception { OpcUaClient client = createClient(); client.connect().get();// browseNode(client, null);// readNode(client);// writeNodeValue(client); subscribe(client);// managedSubscriptionEvent(client); }}
本文涉及的java项目代码和KepServerEX补丁下载地址:https://download.csdn.net/download/qq_28530139/87579334
Hyb✈✈✈本文结束,谢谢浏览【VX:m3920752】!个人资源的解压密码是: hyb
来源地址:https://blog.csdn.net/qq_28530139/article/details/129545400
--结束END--
本文标题: Java 001:通过OPC UA协议连接KepServerEx进行读、写、订阅操作
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