Jersey：找不到媒体类型= application / json的MessageBodyWriter，类型= class org.codehaus.jackson.node.ObjectNode？

4 回答

• 9

  如果你可以使用Jackson 1.x，那么你需要做以下3件事 .

  1. Add Jersey Jackson to your pom.xml:

  <dependency>
      <groupId>org.glassfish.jersey.media</groupId>
      <artifactId>jersey-media-json-jackson</artifactId>
      <version>2.8</version>
  </dependency>
  

  2. Create a ContextResolver:

  @Provider
  public class ObjectMapperProvider implements ContextResolver<ObjectMapper> {
  
      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);
  

  回复于 2024-05-01T04:17:58+08:00
• 7

  我在上面添加了一条评论，说明X的添加有效 .

  但是，将以下maven依赖项添加到pom.xml也可以，并且看起来像是一个更标准的修复 .

  <dependency>
          <groupId>org.glassfish.jersey.media</groupId>
          <artifactId>jersey-media-moxy</artifactId>
      </dependency>
  

  注意：默认情况下， org.glassfish.jersey.archetypes/jersey-quickstart-grizzly maven原型添加了上述依赖项，但注释了注释"uncomment this to get JSON support" .

  回复于 2024-05-01T04:17:58+08:00
• 1

  尝试从运行PHP的Apache服务器获取响应时，我遇到了同样的问题 . 我对服务器的反应很好，但Spring抱怨找不到类型为application / json的MessageBodyWriter . 我将Genson依赖项添加到我的pom.xml中并修复了它！

  <dependency>
          <groupId>com.owlike</groupId>
          <artifactId>genson</artifactId>
          <version>0.99</version>
      </dependency>
  

  文档可在以下位置找到：https://code.google.com/p/genson/

  回复于 2024-05-01T04:17:58+08:00
• 5

  尝试将ObjectNode编写为String：

  // your code
  final ObjectNode payload = getObjectMapper().createObjectNode();
  payload.put("startDate", DateTime.now().toString());
  payload.put("endDate", DateTime.now().plusDays(30).toString());
  payload.put("networkId", 0);
  
  // the solution
  String entity = getObjectMapper().writeValueAsString(payload);
  
  final Response response = builder.accept(MediaType.APPLICATION_JSON).post(Entity.entity(entity, MediaType.APPLICATION_JSON));
  

  回复于 2024-05-01T04:17:58+08:00