JMX之Dynamic MBean

最新推荐文章于 2018-06-06 10:13:57 发布

DryKillLogic

最新推荐文章于 2018-06-06 10:13:57 发布

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分类专栏： J2ee 文章标签： jmx j2ee Dynamic MBean

本文链接：https://blog.youkuaiyun.com/DryKillLogic/article/details/38384045

本文介绍了JMX的Dynamic MBean特性，它无需预定义接口，只需实现DynamicMBean，通过反射和元数据动态生成属性和方法。通过示例展示了如何注册和操作Dynamic MBean，以及其在特定场景下的应用。

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JMX的Dynamic MBean不需要自定义MBean接口，只需要实现JDK提供的DynamicMBean接口即可。Dynamic MBean没有任何明显写在代码里的属性和方法，所有的属性和方法都是通过反射结合JMX提供的辅助元数据，从而动态生成的。

Dynamic MBean：

package com.jmx.dynamic.demo;

import java.lang.reflect.Constructor;
import java.util.Iterator;

import javax.management.Attribute;
import javax.management.AttributeList;
import javax.management.DynamicMBean;
import javax.management.MBeanAttributeInfo;
import javax.management.MBeanConstructorInfo;
import javax.management.MBeanException;
import javax.management.MBeanInfo;
import javax.management.MBeanNotificationInfo;
import javax.management.MBeanOperationInfo;
import javax.management.MBeanParameterInfo;
import javax.management.ReflectionException;

public class HelloDynamic implements DynamicMBean {
	
	//attributes
	private String name;    
	private MBeanInfo mBeanInfo = null;   
	private String className;   
	private String description;   
	private MBeanAttributeInfo[] attributes;   
	private MBeanConstructorInfo[] constructors;   
	private MBeanOperationInfo[] operations;   
	MBeanNotificationInfo[] mBeanNotificationInfoArray; 

	public HelloDynamic() {   
		init();   
		buildDynamicMBean();   
	}   

	private void init() {   
		className = this.getClass().getName();   
		description = "Simple implementation of a MBean.";   
		
		//initial attributes
		attributes = new MBeanAttributeInfo[1];   
		//initial constructors
		constructors = new MBeanConstructorInfo[1];
		//initial method
		operations = new MBeanOperationInfo[1];   
		
		mBeanNotificationInfoArray = new MBeanNotificationInfo[0];   
	}   
 
	private void buildDynamicMBean() {   
		//create constructor   
		Co

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