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Integrating WebSockets and JMS with CDI Events in Java EE 7

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Integrating WebSockets and JMS with CDI Events in Java EE 7

· Java Zone
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What every Java engineer should know about microservices: Reactive Microservices Architecture.  Brought to you in partnership with Lightbend.

Originally authored by Bruno Borges

One of the first things you will want to know about Java EE 7, is how you can integrate some of the new APIs like WebSockets, with existing ones like JMS. That's why I decided to write this article "Integrating WebSockets and JMS with CDI Events in Java EE 7". What I try to demonstrate here, is how two distinct APIs can be used together to deliver something that is not explicitely defined in the specifications, but with some cool integration using CDI Events, an async server-side data push can be implemented with no more than the standards at your hand.

The article will show you how to code your first WebSocket server endpoint, then how by using a Stateless SessionBean you can send messages to a JMS Queue, and finally, how to receive them again by using a MessageDriven Bean that fires CDI events with the payload back to the WebSocket. Simple, straightforward and small code, that takes you through several specifications and releases available starting from now, the Productivity++ Java EE 7.

Microservices for Java, explained. Revitalize your legacy systems (and your career) with Reactive Microservices Architecture, a free O'Reilly book. Brought to you in partnership with Lightbend.

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Published at DZone with permission of Reza Rahman, DZone MVB. See the original article here.

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