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Jersey doesn't cancel Java type

I would like to have a service that responds to POST requests to / contact with the following payload:

{"records":[{"firstname":"John","lastname":"Doe"}]}

Ideally, records should be a wrapper for all types: Contact, Order, etc. So I would like to use a generic type, but Jersey doesn't seem to be able to untie it. Here is my code:

@Controller
@Path("/contact")
public class ContactResource {

@Autowired
private ContactService contactService;

@POST
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public List<Contact> saveContact(final Records<Contact> contact) {
    return Arrays.asList(contactService.saveContact(contact.records.get(0)));
}
}


@XmlRootElement
public class Records<T> {
    public List<T> records;
}

It seems that using custom javax.ws.rs.ext.MessageBodyReader might solve my problem. Correctly?

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1 answer

It looks like you are using natural JSON encoding, in order to be able to handle it, you should configure Jersey as described here .

On some @PostConstruct in one of your oneton beans used for configuration, include the following call:

JSONConfiguration.natural().build();
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