What to do when JAX-RS cannot find it’s Providers aka My message body writer is not used

One of the reasons why I wrote this article is my, rather unusual, encounter with a missing message body writer in a Jersey 1 test application. This problem of mine occurred during collecting of data to get a Jersey 1 performance baseline in order to see where Jersey 2 stands when compared to its predecessor. The problem is described at the end of this article because I think it’s pretty rare, but still not impossible :-), and not many of you will (hopefully) face it. But first I’d like to take a look at more common issues regarding missing providers and what you can do to solve them.

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Binding JAX-RS Providers to Resource Methods

When you register providers (such as filters and interceptors) in your application they’re associated and applied to each resource method by default. In other words they’re bound globally. For most cases this approach is sufficient but sometimes, especially when you want to use your provider only with a few methods, it’s not enough. JAX-RS 2.0 brings a solution for this situation: Name and Dynamic Binding.

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