How to receive messages from IBM MQ JMS using spring boot continuously?

Question

I have spring boot application which receive JSON requests and push it into IBM MQ JMS queue. There can be n number of JSON requests will be pushed to the queue. My Goal is to process each request from the queue. How can i listen to the queue and get the messages one by one to process using spring boot ?

Answer 1

You need to implement listener as:

1: Create configure following:

@Bean
public MQConnectionFactory mqConnectionFactory(){
  MQConnectionFactory connectionFactory = new MQConnectionFactory();
  connectionFactory.setHostName(); //mq host name
  connectionFactory.setPort(); // mq port
  connectionFactory.setQueueManager(); //mq queue manager
  connectionFactory.setChannel(); //mq channel name
  connectionFactory.setTransportType(1);
  connectionFactory.setSSLCipherSuite(); //tls cipher suite name
  return connectionFactory;
}


@Bean()
public DefaultMessageListenerContainer myMessageEventContainer() {
  DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
  container.setAutoStartup(true);
  container.setConnectionFactory(mqConnectionFactory);
  container.setDestinationName(//queue name//);
  container.setMessageListener(new MyEventListener());
  return container;
}

2: Implement message listener:

public class MyEventListener implements MessageListener {

  @Override
  public void onMessage(Message message) {
    try {
      if (message instanceof TextMessage) {
        TextMessage textMessage = (TextMessage) message;
        String stringMessage = textMessage.getText();
        //do something with your message from queue
      }
    } catch (JMSException e) {
      //catch error
    }
  }
}