我想通过java从主机和jmx端口获取一个指标。

import javax.management.*;
import java.util.*;

public class JMXExample {
    public static void main(String[] args) throws Exception {
        // 连接到远程主机
        JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://<host>:<port>/jmxrmi");
        JMXConnector connector = JMXConnectorFactory.connect(url);
        MBeanServerConnection connection = connector.getMBeanServerConnection();

        // 获取指标数据
        ObjectName mbeanName = new ObjectName("<MBean名称>");
        AttributeList attributes = connection.getAttributes(mbeanName, new String[] { "<属性名称>" });

        // 处理指标数据
        for (Attribute attribute : attributes.asList()) {
            String attributeName = attribute.getName();
            Object attributeValue = attribute.getValue();
            System.out.println(attributeName + ": " + attributeValue);
        }

        // 关闭连接
        connector.close();
    }
}