When does @JsonProperty rename object field?

Hasaki :

@Data
public class Tests {
    @JsonProperty("comment")
    private String notes;
}

I know how to use @JsonProperty to rename field as another name, but when does it rename the object field? For example, notes is renamed to comment. I try to read the source code and find that there is some relative code in com.fasterxml.jackson.databind.ser.std.BeanSerializerBase#serializeFields and com.fasterxml.jackson.databind.ser.BeanPropertyWriter#serializeAsField. But the field has already been renamed as comment. So where does @JsonProperty rename object field?

i.bondarenko :

Property name resolving happens in com.fasterxml.jackson.databind.introspect.JacksonAnnotationIntrospector Have a look at this fragment:

public PropertyName findNameForDeserialization(Annotated a) {
    ...
    // Get JsonProperty value for the field
    JsonProperty pann = (JsonProperty)this._findAnnotation(a, JsonProperty.class);
    if (pann != null) {
        // here we are !!!
        return PropertyName.construct(pann.value());
    } else {
        return !useDefault && !this._hasOneOf(a, ANNOTATIONS_TO_INFER_DESER) ? null : PropertyName.USE_DEFAULT;
    }
}

All it happens in POJOPropertiesCollector.collectAll()

Guess you like

Origin http://43.154.161.224:23101/article/api/json?id=324780&siteId=1