使用JAX-RS和MOXy的JSON解组

Question

public class User {

    private String id;
    private String email;
    private Address address;
    private List<Phone> phones;

    // getters & setters

}

public class Address {

    private String type;
    private String value;

    // getters & setters

}

public class Phone {

    private String type;
    private String value;

    // getters & setters

}

@POST
public Response create(User user) {
   // some logic
}

现在，当我发送包含以下json数据的POST请求时：

{
   "id":"qwe12",
   "email":"[e-mail]",
   "address":{
      "type":"1WHEN-Honorable",
      "value":"1WHEN-M"
   },
   "phones":[
      {
         "type":"HOME",
         "number":"034-2342-12-31"
      },
      {
         "type":"WORK",
         "number":"31-21-3211-32"
      }
   ]
}

它工作得很好，MOXY会自动将这个json映射到用户对象，很好

但我需要使用另一层嵌套来处理json，如下所示：

{
   "user":{
      "id":"qwe12",
      "email":"[e-mail]",
      "address":{
         "type":"1WHEN-Honorable",
         "value":"1WHEN-M"
      },
      "phones":[
         {
            "type":"HOME",
            "number":"034-2342-12-31"
         },
         {
            "type":"WORK",
            "number":"31-21-3211-32"
         }
      ]
   }
}

@POST
public Response create(UserWrapper user) {
   // some logic
}

public class UserWrapper {

    private User user;

    // getters & setters

}

Answer 1

也许不是你要找的答案，但我推荐使用Jackson而不是Moxy。它是一个更成熟的JSON框架，具有更多的特性，而且工作得更好。莫西也许有办法，但这是杰克逊的办法

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>2.22.1</version>
</dependency>
<!-- You need to remember to remove MOXy -->

在ContextResolver中，配置ObjectMapper以解包装根值

@Provider
public class MyObjectMapperProvider implements ContextResolver<ObjectMapper> {
    final ObjectMapper mapper;

    public MyObjectMapperProvider() {
        mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.UNWRAP_ROOT_VALUE, true);
    }

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

    private static ObjectMapper createDefaultMapper() {
        return mapper;
    }
}

它将查找以反序列化的值将为

null

mapper.configure(SerializationFeature.WRAP_ROOT_VALUE, true);