I wasn't pointing out the problem with lazy collections. I had @JsonIgnore on that property. But since the Jackson didn't kick in, Johnzon skipped the annotation and tried to serialize the property.
Anyways the *problem was indeed with the @Provider* annotation. Thank you very much for helping me fixing this. Anyways why is it such a hassle to get it working under TomEE? -- View this message in context: http://tomee-openejb.979440.n4.nabble.com/Cannot-get-TomEE-to-use-Jackson-tp4682409p4682416.html Sent from the TomEE Users mailing list archive at Nabble.com.