如何找到Horneq队列长度

我找到了两种方法

public synchronized int size(){    ClientSession session;    try {        session = sf.createSession(false, false, false);        ClientRequestor requestor = new ClientRequestor(session, "hornetq.management");        ClientMessage m = session.createMessage(false);        ManagementHelper.putAttribute(m, "core.queue." + queueName, "messageCount");        ClientMessage reply = requestor.request(m);        int count = (Integer) ManagementHelper.getResult(reply);        return count;    } catch (Exception e) {        e.printStackTrace();    }    return 0;}

和

public synchronized int size(){    ClientSession coreSession = null;    int count = 0;    try {        coreSession = sf.createSession(false, false, false);        ClientSession.QueueQuery result;        result = coreSession.queueQuery(new SimpleString(queueName));        count = result.getMessageCount();    } catch (HornetQException e) {        e.printStackTrace();    } finally {        if (coreSession!= null ){ try {     coreSession.close(); } catch (HornetQException e) {     e.printStackTrace(); }        }    }    return count;}