Type definition error in ResponseEntity Spring Boot

Asked Apr 29 '20 at 04:24

Active Apr 29 '20 at 08:22

Viewed 3,707 times

I have 2 microservices: gateway and another, which are connect with Feign.

When i do request directly to my microservice i have normal response. But if i do it with gateway i have exception:

Type definition error: [simple type, class FieldsDTO]; nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `FieldsDTO` (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator)

This is my DTO class:

@Data
@NoArgsConstructor
@AllArgsConstructor
public class FieldsDTO {
    private Set<String> fieldNames;
    private List<ShortFiledsDTO> dataList;
}

Are there some thoughts how to fix it?

UPD: ANSWER:

Definitely, you must to create default constructor, but i forgot to update model's version

edited Apr 29 '20 at 08:22

asked Apr 29 '20 at 04:24

Krazim00da

can you add the code how the Gateway service tries to access the microservice? – rieckpil Apr 29 '20 at 05:34
1

Similar error and solution: https://stackoverflow.com/a/61458753/2987755 – dkb Apr 29 '20 at 06:03
i did all the same, but it doesn't work – Krazim00da Apr 29 '20 at 07:06
@dkb i have same annotations on DTOs – Krazim00da Apr 29 '20 at 07:42
Why do you have a reference to ResponseEntity in the title of the question? It does not appear elsewhere in the code. I have the same problem, but it's generated by code I have no direct control over (spring-boot/feign/jackson) – mapto Jun 15 '21 at 14:53

Type definition error in ResponseEntity Spring Boot

0 Answers0