Upgrading to Jackson 2.0 from 1.9 in Jersey not working

Question

I\'m using Jackson (in Jersey) to serialize entities, and I\'m migrating from Jackson 1.9 to 2.0. I followed this guide, and at first it seemed like everything worked out ea

Answer 1

It is not enough to simply upgrade Jackson core and mapper versions; integration between Jersey (or any JAX-RS implementation) and Jackson happens using specific JAX-RS provider. For Jackson, this would be https://github.com/FasterXML/jackson-jaxrs-json-provider.

So you also need to add 2.x Jackson JAX-RS JSON provider, and that will make Jersey use Jackson 2.x for its operation.