用netconf协议实现对设备监测点的监控java代码

要使用Netconf协议实现对设备监测点的监控，你需要使用一个Java库来处理Netconf协议。有几个Java库可供选择，其中一个是OpenDaylight Controller的NetconfJava库。下面是一个简单的Java代码片段，演示如何使用NetconfJava库来获取设备监测点信息：

import org.opendaylight.netconf.api.NetconfConnector;
import org.opendaylight.netconf.api.NetconfMessage;
import org.opendaylight.netconf.api.NetconfSession;
import org.opendaylight.netconf.api.NetconfSessionFactory;
import org.opendaylight.netconf.util.xml.XmlUtil;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;
import java.util.Collections;

public class NetconfMonitor {
    private static final String DEVICE_HOSTNAME = "192.168.1.1";
    private static final int DEVICE_PORT = 830;
    private static final String DEVICE_USERNAME = "admin";
    private static final String DEVICE_PASSWORD = "admin";

    public static void main(String[] args) {
        NetconfConnector connector = NetconfConnector.builder()
                .withAddress(new InetSocketAddress(DEVICE_HOSTNAME, DEVICE_PORT))
                .withCredentials(DEVICE_USERNAME, DEVICE_PASSWORD)
                .build();

        try {
            connector.connect().get();
            NetconfSession session = NetconfSessionFactory.newSession(connector);

            // Get monitoring information from the device
            NetconfMessage request = NetconfMessage.builder()
                    .addRpcElement(XmlUtil.newDocument("get"))
                    .build();
            NetconfMessage response = session.sendMessage(request).get();
            Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(response.toString());

            // Parse and print the monitoring information
            Element data = XmlUtil.getElementsByTagName(doc.getDocumentElement(), "data").get(0);
            System.out.println(XmlUtil.toString(data));
        } catch (InterruptedException | ExecutionException | IOException | ParserConfigurationException | SAXException e) {
            e.printStackTrace();
        } finally {
            connector.close();
        }
    }
}

在这个例子中，我们使用NetconfJava库建立了与设备的连接，并发送了一个Netconf消息来获取监测点信息。在获取到响应后，我们使用XML解析器将响应转换为Java对象，并打印出监测点信息。请注意，这个例子只是一个简单的演示，实际应用中需要根据设备的具体情况来发送正确的Netconf消息。