Spring REST, JSON “Can not handle managed/back reference 'defaultReference'” 415 Unsupported Media Type

Question

I am trying to POST to http://localhost:9095/translators from an AngularJS front-end using Spring boot/Spring RestController backend.

I can do a GET and the response

Answer 1

You need @ResponseBody annotation like as follows:

@RequestMapping(method = RequestMethod.POST, consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
    @ResponseBody public User addTranslator(@RequestBody User user) {
        //translation.setTranslationId(null);
        return repository.saveAndFlush(user);
    }