How to map JSON fields to custom object properties? [duplicate]

Answer 1

In case you familiar it, you can also use Jaxb annotations to marshal/unmarshal json using Jackson

@XmlRootElement
public class JsonEntity {
   @XmlElement(name = "message")
  private String value;
}

But you must initialize your Jackson context propery. Here an example how to initialize Jackson context with Jaxb annotations.

ObjectMapper mapper = new ObjectMapper();

AnnotationIntrospector introspector = new JaxbAnnotationIntrospector();
mapper.getDeserializationConfig().setAnnotationIntrospector(introspector);
mapper.getSerializationConfig().setAnnotationIntrospector(introspector);

Answer 2

To map a JSON property to a java object with a different name use @JsonProperty annotation, and your code will be :

public class JsonEntity {
    @JsonProperty(value="message")
    private String value;
}

Answer 3

Try this:

@JsonProperty("message")
private String value;