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javajsonspringrabbitmqspring-rabbit

How do I convert a JSON message from RabbitMQ to a Java object?

I have two separate Java apps which I need to send messages between via RabbitMQ using spring-rabbit. In the app which is the producer I am using JsonMessageConverter as the message converter for my RabbitTemplate to convert my Java objects to JSON messages before they get sent to the queue.

In the other app which is the consumer I want to convert the JSON messages back to Java objects. I have tried using SimpleMessageListenerContainer with a custom MessageListener and I can get the Messages from the queue, but I don't know to convert them from JSON back to Java objects.

How do I use JsonMessageConverter when consuming messages asynchronously from RabbitMQ?

Solution

  • I ended up using a MessageListenerAdapter with a custom delegate object and JsonMessageConverter as the MessageConverter. Like so:

    SimpleMessageListenerContainer listenerContainer = new SimpleMessageListenerContainer();
listenerContainer.setMessageListener(new MessageListenerAdapter(new EventHandler(), new JsonMessageConverter()));

    My EventHandler class has a single method called handleMessage which gets the deserialized JSON object passed to it.