jackson annotations being ignored

Question

I\'m trying to use Jackson annotations to re-name some of the json labels produced during serialization. The annotations all compile fine, and when I run, the Jackson seria

Answer 1

One relatively common reason is trying to use "wrong" set of annotations: Jackson 1.x and Jackson 2.x annotations live in different Java packages, and databind has to match major version. This design has the benefit of allowing 1.x and 2.x versions to be used side by side, without class loading conflicts; but downside that you have to make sure that you have matching versions.

Biggest problem is the use by frameworks: many JAX-RS implementations (like Jersey) still use Jackson 1.x by default. So I am guessing you might be using Jackson 1.x indirectly, but adding Jackson 2.x annotations. If so, you need to use 1.x annotations (ones under org.codehaus.jackson) instead.