Jersey: MessageBodyWriter not found for media type=application/json, type=class org.codehaus.jackson.node.ObjectNode?

Question

I am using Jersey 2.8 Client to post data to RESTful endpoint. The code looks like

    final Client client = ClientBuilder.newClient();
    fina         


        

Answer 1

If you ok using Jackson 1.x, then you need to the following 3 things.

1. Add Jersey Jackson to your pom.xml:

    org.glassfish.jersey.media
    jersey-media-json-jackson
    2.8

2. Create a ContextResolver:

@Provider
public class ObjectMapperProvider implements ContextResolver {

    final ObjectMapper defaultObjectMapper;

    public ObjectMapperProvider() {
        defaultObjectMapper = getObjectMapper();
    }

    @Override
    public ObjectMapper getContext(Class type) {
        return defaultObjectMapper;
    }

    public static ObjectMapper getObjectMapper() {
        return new ObjectMapper()
                .configure(SerializationConfig.Feature.WRITE_DATES_AS_TIMESTAMPS, false /* force ISO8601 */)
                .configure(SerializationConfig.Feature.WRITE_ENUMS_USING_TO_STRING, true)
                .configure(DeserializationConfig.Feature.READ_ENUMS_USING_TO_STRING, true)
                .setSerializationInclusion(JsonSerialize.Inclusion.ALWAYS);
    }
}

3. Register providers with ClientBuilder:

final Client client = ClientBuilder.newBuilder()
        .register(ObjectMapperProvider.class)
        .register(JacksonFeature.class)
        .build();

final WebTarget target = client.target(url).path("inventorySummary");

final ObjectNode payload = ObjectMapperProvider.getObjectMapper().createObjectNode();
payload.put("startDate", DateTime.now().toString());
payload.put("endDate", DateTime.now().plusDays(30).toString());
payload.put("networkId", 0);

final Response response = target.request(MediaType.APPLICATION_JSON)
                                .post(Entity.json(payload));

assertStatus(Response.Status.OK.getStatusCode(), response);