Jackson, serialize one attribute of a reference

Question

When serializing a Java object which has other object references, I need to serialize only one attribute of the nested object(usual case of foreign key, so serialize the \"i

Answer 1

Just Found a way using Jackson 2.1+ .

Annotate object references with(this will pick only the id attribute of AddressInformation):

@JsonProperty(value = "defaultaddressid")
@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
@JsonIdentityReference(alwaysAsId = true) 
public AddressInformation getDefaultAddress() {
    return defaultAddress;
}

Serialization works very well.