Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.3k views
in Technique[技术] by (71.8m points)

json - How to extract ObjectMapper from JAX-RS Client?

I am using Jersey JAX-RS client (version 2.0). I know it is using a Jackson ObjectMapper to generate and parse JSON. I want to use that same object to generate JSON for some java classes so that I can write them to a log.

I know I can create a new instance of ObjectMapper but I prefer to request Jersey Client to give me a reference to the one it is using. How can I do this? Jersey 2.0 is aware of Jackson because it includes a JacksonFeature class that is used to configure the Jackson feature in the first place.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Answer

0 votes
by (71.8m points)

I solved this by adding the following static members:

private static JacksonJsonProvider jackson_json_provider = new JacksonJaxbJsonProvider()
      .configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES, false)
      .configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);

private static ObjectMapper object_mapper = jackson_json_provider.locateMapper(
      Object.class, MediaType.APPLICATION_JSON_TYPE);

private static Client client = ClientBuilder.newClient().register(jackson_json_provider);

Note that the second declaration is not needed just to configure FAIL_ON_UNKNOWN_PROPERTIES or FAIL_ON_EMPTY_BEANS; I use object_mapper for some other reasons.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...