Ignore null fields when DEserializing JSON with Gson or Jackson

Question

I know there\'s lots of questions about skipping fields with a null value when serializing objects to JSON. I want to skip / ignore fields with null values when deserializing J

Answer 1

Albeit not the most concise solution, with Jackson you can handle setting the properties yourself with a custom @JsonCreator:

public class User {
    Long id = 42L;
    String name = "John";

    @JsonCreator
    static User ofNullablesAsOptionals(
            @JsonProperty("id") Long id,
            @JsonProperty("name") String name) {
        User user = new User();
        if (id != null) user.id = id;
        if (name != null) user.name = name;
        return user;
    }
}