Question

当我按照代码通过线程JMX connection时，

private  JMXConnector initConnection() throws Exception{
    JMXServiceURL serviceURL = null;

    try {
        String URL = MessageFormat.format(connectorURL, new Object[]{hostName, port});
        serviceURL = new JMXServiceURL(URL);

        final Map<String, String[]> environment = new HashMap<String, String[]>();
        environment.put(JMXConnector.CREDENTIALS, new String[]{userName, password});

        return JMXConnectorFactory.connect(serviceURL, environment);
    }
    catch (Exception e)
    {
        throw e;
    }

}

以下线程没有破坏，即使我关闭了连接并破坏了创建jmx连接的线程

GC守护进程，RMI RenewClean，RMI调度程序（0）这些线程在java JMX连接中没有破坏。

连接关闭的代码

public void closeConnection() {
    if(jmxc != null){
        try{
            jmxc.close();
        }
        catch (IOException e) {
            jmxc = null;
        }
    }
}



public void createMBeanServerConnection() throws Exception
{
    try
    {  
        jmxc  = initConnection();

        mbServerConnection = jmxc.getMBeanServerConnection();
    }
    catch (Exception e)
    {
        throw e;
    }  
 }

这是完整的背景

public class Test1 
{
    public static void main(String[] args) throws Exception 
    {

        Thread.sleep(120000);
        Test t = new Test();
        t.main(args);
        Thread.sleep(120000);
    }

}







public class Test
{

    private String hostName = "";
    private String port = "";
    private String userName = "";
    private String password = "";
    private String connectorURL = "service:jmx:rmi:///jndi/rmi://{0}:{1}/jmxrmi";
    private JMXConnector jmxc = null;
    public static void main(String []args) throws Exception
    {
        Test t = new Test();
        t.hostName = args[0];
        System.out.println(args[1]);
        t.port = args[1];
        t.jmxc = t.initConnection(); 
        MBeanServerConnection mbsc = t.jmxc.getMBeanServerConnection();
        mbsc.queryMBeans(new ObjectName("*.*:*"), null);
        t.closeConnection();
    }

    private  JMXConnector initConnection() 
    {

        JMXServiceURL serviceURL = null;

        try 
        {

            String URL = MessageFormat.format(connectorURL, new Object[]{hostName, port});
            System.out.println(URL);
            serviceURL = new JMXServiceURL(URL);
            final Map<String, String[]> environment = new HashMap<String, String[]>();
            environment.put(JMXConnector.CREDENTIALS, new String[]{userName, password});
            System.out.println(serviceURL);

            return JMXConnectorFactory.connect(serviceURL, environment);
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }

    }


    public void closeConnection() 
    {

        if(jmxc != null)
        {
            try
            {
                jmxc.close();
            }
            catch (IOException e) {
                jmxc = null;
            }
        }
    }
}

Answer 1

您应完成任务，然后关闭连接。

public void createMBeanServerConnection() throws Exception
{
    try
    {  
        jmxc  = initConnection();

        mbServerConnection = jmxc.getMBeanServerConnection();

        doYourThing();

    }
    catch (Exception e)
    {
        throw e;

    }  finally {

        closeConnection();

    }

 }

JMX线程没有关闭

1 个答案: