CallJMXByProcessId.java

import java.io.IOException;

import javax.management.AttributeNotFoundException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanException;
import javax.management.MBeanServerConnection;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import javax.management.ReflectionException;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;

import com.sun.tools.attach.AgentInitializationException;
import com.sun.tools.attach.AgentLoadException;
import com.sun.tools.attach.AttachNotSupportedException;
import com.sun.tools.attach.VirtualMachine;
import com.sun.tools.attach.VirtualMachineDescriptor;
import com.sun.tools.attach.spi.AttachProvider;

public class CallJMXByProcessId {

	public static void main(String[] args) throws AttachNotSupportedException,
			IOException, AgentLoadException, AgentInitializationException,
			MalformedObjectNameException, AttributeNotFoundException,
			InstanceNotFoundException, MBeanException, ReflectionException {
		final AttachProvider attachProvider = AttachProvider.providers().get(0);

		VirtualMachineDescriptor descriptor = null;
		for (VirtualMachineDescriptor virtualMachineDescriptor : attachProvider
				.listVirtualMachines()) {
			if (virtualMachineDescriptor.id().equals("12858")) // process Id
				descriptor = virtualMachineDescriptor;
		}
		final VirtualMachine virtualMachine = attachProvider
				.attachVirtualMachine(descriptor);
		virtualMachine.loadAgent(
				"/usr/lib/jvm/java-8-oracle/jre/lib/management-agent.jar",
				"com.sun.management.jmxremote");
		final Object portObject = virtualMachine.getAgentProperties().get(
				"com.sun.management.jmxremote.localConnectorAddress");

		final JMXServiceURL target = new JMXServiceURL(portObject + "");
		final JMXConnector connector = JMXConnectorFactory.connect(target);
		final MBeanServerConnection remote = connector
				.getMBeanServerConnection();

		final ObjectName objectName = new ObjectName(
				"spring:name=MyManagedBean");
		String value = (String) remote.getAttribute(objectName, "Name");
		System.out.println(value);
		remote.invoke(objectName, "setName", new Object[] { "new new new" },
				new String[] { "java.lang.String" });
		value = (String) remote.getAttribute(objectName, "Name");
		System.out.println(value);
	}

}