Apache Camel Converting JSON to JMS

Question

I am trying to convert information in a route that is in JSON format into JMS format so that I can send it to a topic.

Looking at the docs, I see:

from("activemq:My.Queue").
  marshal().json(JsonLibrary.Jackson).
  to("mqseries:Another.Queue");

Is it correct to interpret here that we have marshalled the message from the queue into JSON, then when sending it to the other queue, it has been converted back to a JMS message? If not, how can we achieve this conversion using the Java DSL? Further, is it possible to add key-value pairs to the JSON along the Camel route?

Thanks.

Sneharghya Pathak · Accepted Answer · 2021-07-05 08:41:47Z

1

You can pass any kind of data to a JMS queue. The marshal().json suggests that the data in My.Queue was a java object, which was converted into json format. The Another.Queue queue is receiving a json object.

You can also transform your data anyway you want before passing the data to the consumer.

answered Jul 5, 2021 at 8:41

Sneharghya Pathak

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2 Comments

Richard K Yu Over a year ago

What would be the difference between sending the data without marshalling it first and sending it after marshalling? Do we convert to JSON for convenience?

Sneharghya Pathak Over a year ago

I think that example was just showing you could convert to json without much of a hassle. You could just as easily remove the marshal to json, which means your camel route will be picking pojos from My.Queue and just transferring those to Another.Queue

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