delver delver - 12 days ago 8
Java Question

@JsonCreator 'Could not find creator property with name' even with ignoreUnknown = true

I have the following class:

@JsonIgnoreProperties(ignoreUnknown = true)
public class Topic {

private List<Comment> comments = new ArrayList<>();

private List<User> users = new ArrayList<>();

@JsonCreator
public Topic(@JsonProperty("success") boolean success,
@JsonProperty("response_comments") List<ResponseComment> responseComments,
@JsonProperty("response_users") List<ResponseUser> responseUsers) {

if (success) {
comments = Util.resolveComments(responseComments);
users = Util.resolveUsers(responseUsers); //some logic
}

}

}


When I try to deserialize JSON, it throws:


Could not find creator property with name 'comments' (in class com.test.domain.mapper.Topic)


I don't want to fill
comments
from json, just in constructor from properties. However, if I write next params:

@JsonProperty("success") boolean success,
@JsonProperty("response_comments") List<ResponseComment> responseComments,
@JsonProperty("response_users") List<ResponseUser> responseUsers,
@JsonProperty("comments") Object a,
@JsonProperty("users") Object a


all works.

Answer

After hours of unit testing and copying of classes, I found a solution. I don't want to admit it, but the issue in the Lombok's @AllArgsConstructor. I'm sorry that I didn't provided that I use Lombok at all.
Without @AllArgsConstructor in Topic all works as expected. However, it exists in other classes even with @JsonCreator and works. I'm sorry for your time.