Jersey Client无法通过JAXB Moxy序列化发送/接收XML消息?

我正在尝试使用jersey客户端使用XML消息发出一些RESTful请求。我不想为任何端点提供服务,因此不涉及球衣服务器包。
出于测试目的,我使用了可公开访问的 http://www.thomas-bayer.com/sqlrest/CUSTOMER 测试服务。

如中所述 9.2.4. Using Custom JAXBContext 我有一个自定义ContextResolver类,它是:

@Provider
@Produces({"application/xml"})
public class MyJaxbContextProvider implements ContextResolver<JAXBContext> {

  private JAXBContext context;

  public JAXBContext getContext(Class<?> type) {
    if (context == null) {
      try {
        context = JAXBContext.newInstance("resttest.jaxb");
      } catch (JAXBException e) {
        throw new RuntimeException(e);
      }
    }
    return context;
  }
}

此ContextResolver在rest客户端中注册为:

client = ClientBuilder.newClient().register(MoxyXmlFeature.class).register(MyJaxbContextProvider.class);

我的客户实体是:

@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(name = "", propOrder = {
    "id",
    "firstname",
    "lastname",
    "street",
    "city"
})
@XmlRootElement(name = "CUSTOMER")
public class Customer {
  @XmlElement(name = "ID")
  protected Integer id;

  @XmlElement(name = "FIRSTNAME")
  protected String firstName;

  @XmlElement(name = "LASTNAME")
  protected String lastName;

  @XmlElement(name = "STREET")
  protected String street;

  @XmlElement(name = "CITY")
  protected String city;

  // getters and setters following
  // ...
}

最后,发出实际请求的测试类是:

public class RestClientTest {
  private static Client client;

  @BeforeClass
  public static void beforeClass() {
    client = ClientBuilder.newClient().register(MoxyXmlFeature.class).register(MyJaxbContextProvider.class);
  }

  @Test
  public void testCreateCustomerWithEntity() { // Error
    Customer customer = new Customer();
    customer.setId(50);
    customer.setFirstName("Nikol");

    Response res = client.target("http://www.thomas-bayer.com/sqlrest/CUSTOMER/").request()
        .post(entity(customer, MediaType.APPLICATION_XML_TYPE));

  }

  @Test
  public void testGetCustomer() { // Error
    Customer customer = client.target("http://www.thomas-bayer.com/sqlrest/CUSTOMER/3/").request()
        .get(new GenericType<Customer>() {});

    assertThat(customer.getId(), equalTo(3));
  }
}

我已将这些文件打包到位于的resttest项目中 https://github.com/georgeyanev/resttest
克隆后,只需使用

mvn test

我希望当我发出POST请求并传递一个Customer实例时,后者将由jersey客户端(testCreateCustomerWithEntity)整理。
当我发出GET请求时,返回的Customer实体将被解组(testGetCustomer)。
但这两个测试都失败,MessageBodyProviderNotFoundException表示没有为媒体类型application/xml和类型Customer找到MessageBodyWriter/MessageBodyReader。

我使用的是2.19版本的jersey客户端和jersey媒体moxy库以及oracle java 1.8.0_25

可能的原因是什么?