JMX入门例子

package com.xuanyuv.demo.jmx;

/**
 * 定义一个MBean接口
 * @create Jul 16, 2012 2:14:07 PM
 * @author 玄玉(https://www.xuanyuv.com/)
 */
public interface UserActionMBean {
    /**
     * 用户的年龄
     */
    void setAge(int age);
    int getAge();

    /**
     * 用户的名字
     */
    void setName(String name);
    String getName();

    /**
     * 获取用户资料
     */
    String getUserInfo();
}

package com.xuanyuv.demo.jmx;

/**
 * 实现MBean接口
 * @create Jul 16, 2012 2:14:24 PM
 * @author 玄玉(https://www.xuanyuv.com/)
 */
class UserAction implements UserActionMBean {
    private int age;
    private String name;

    @Override
    public void setAge(int age) {
        this.age = age;
    }
    @Override
    public int getAge() {
        return age;
    }

    @Override
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String getName() {
        return name;
    }

    @Override
    public String getUserInfo() {
        return "This is UserAction MBean, its name is " + this.name + ", age is " + this.age;
    }
}

package com.xuanyuv.demo.jmx;

import com.sun.jdmk.comm.HtmlAdaptorServer;

import javax.management.MBeanServer;
import javax.management.ObjectName;
import javax.swing.JDialog;
import java.lang.management.ManagementFactory;

/**
 * 启动JMX监控
 * <ul>
 *     <li>用法：运行该程序，然后win+R-->cmd-->jconsole，[本地]选择这里运行的程序，然后进入MBean面板页</li>
 *     <li>注意：标准MBean名称必需是在待监控的类名后面加上MBean，且待监控的类和MBean接口必需在同一包下</li>
 * </ul>
 * @create Jul 16, 2012 2:12:36 PM
 * @author 玄玉(https://www.xuanyuv.com/)
 */
public class MainMonitor {
    public static void main(String[] args) throws Exception {
        //MBeanServer是MBean的容器，可以通过多种方式获得MBeanServer的实例
        //不能在jconsole中使用
        //MBeanServer mbserver = MBeanServerFactory.createMBeanServer();
        //可以在jconsole中使用
        MBeanServer mbserver = ManagementFactory.getPlatformMBeanServer();

        //创建MBean（注意UserActionMBean必须是public）
        UserActionMBean userAction = new UserAction();

        //将MBean注册到MBeanServer中
        mbserver.registerMBean(userAction, new ObjectName("MyAppMBean:name=userAction"));

        //启用HTML协议适配器，使之能够通过浏览器访问MBean，地址为http://127.0.0.1:9999
        //注意HtmlAdaptorServer需要引入jmxtool.jar
        //Maven坐标为<dependency groupId="com.sun.jdmk" artifactId="jmxtools" version="1.2.1"/>
        HtmlAdaptorServer adapter = new HtmlAdaptorServer();
        adapter.setPort(9999);
        mbserver.registerMBean(adapter, new ObjectName("MyAppMBean:name=htmlAdapter,port=9999"));
        adapter.start();

        //为了演示保持程序处于运行状态，创建一个图形窗口
        JDialog dialog = new JDialog();
        dialog.setName("jmx test");
        dialog.setVisible(true);
    }
}