Jackson confused with bidirectional one-to-many relationship

Question

I\'m using jackson 1.9.2 with Hibernate/Spring MVC through MappingJacksonHttpMessageConverter.

Jackson can not serialize bidirectional one-to-many relationship and

Answer 1

One thing wrong in your class def is use of untyped List; you should rather have:

List phoneNumber ;

since otherwise Jackson can not know what the type is when deserializing; and even on serializing it could cause problems (as base type is not known for sure). So I would first fix this issue.

But additionally your dependency may be wrong way around: @JsonManagedReference MUST always be the first thing to serialize. If this is not the case, you can not use these annotations. Without seeing objects you are trying to serialize it is hard to know for sure (POJO definition and JSON seem slightly off).