@JmsListener usage for publish-subscribe topic

Question

I am trying to create example for publish-subscribe based on @JmsListener annotation: https://github.com/lkrnac/book-eiws-code-samples/tree/master/05-jms/0515-publish-subscr

Answer 1

Switching the default destination type of a @JmsListener from Queue to Topic can be done completely in Java without modifying the properties or using XML.

The Spring guide contains an example for customizing the default settings provided by DefaultMessageListenerContainer.

It requires defining a custom bean like follows:

@Bean
public JmsListenerContainerFactory myFactory(ConnectionFactory connectionFactory,
                                                DefaultJmsListenerContainerFactoryConfigurer configurer) {
    DefaultJmsListenerContainerFactory factory = new DefaultJmsListenerContainerFactory();
    // This provides all boot's default to this factory, including the message converter
    configurer.configure(factory, connectionFactory);
    // You could still override some of Boot's default if necessary.
    factory.setPubSubDomain(true);
    return factory;
}

This can then be used in the @JmsListener annotated method:

@JmsListener(destination = "mailbox", containerFactory = "myFactory")
public void receiveMessage(Email email) {
    // implementation
}