江西移动：推动南昌入选全国5G示范城市

W/o Durability

import javax.jms {
  Connection,
  ConnectionFactory,
  Destination,
  Message,
  MessageConsumer,
  Session
}

import org.apache.activemq {
  ActiveMQConnectionFactory
}

void main() {
  ConnectionFactory connFactory = ActiveMQConnectionFactory();

  Connection conn = connFactory.createConnection();

  Session sess = conn.createSession(false, Session.\iAUTO_ACKNOWLEDGE);

  Destination dest = sess.createTopic("SampleTopic");

  MessageConsumer cons = sess.createConsumer(dest);

  conn.start();

  Message msg = cons.receive();

  print(msg);

  conn.close();
}

W/ Durability

import javax.jms {
  Connection,
  ConnectionFactory,
  Message,
  MessageConsumer,
  Session,
  Topic
}

import org.apache.activemq {
  ActiveMQConnectionFactory
}

void main() {
  ConnectionFactory connFactory = ActiveMQConnectionFactory();

  Connection conn = connFactory.createConnection();

  conn.clientID = "SampleClient";

  Session sess = conn.createSession(false, Session.\iAUTO_ACKNOWLEDGE);

  Topic dest = sess.createTopic("SampleTopic");

  MessageConsumer cons = sess.createDurableSubscriber(dest, "SampleSubscription");

  conn.start();

  Message msg = cons.receive();

  print(msg);

  conn.close();
}