spring REST API Pageable returns empty object

Question

I know, this has been asked before.

But I did check a bunch of those answers and could not find anything with the same context that solved the issue.

The code is very straight forward:

@GetMapping("")
@JsonView(Views.GetView.class)
public ResponseEntity<Page<User>> getUsers(
        @ParameterObject Pageable pageable) {

    System.out.println("pageable " + pageable); 
        //output pageable Page request [number: 0, size 20, sort: UNSORTED]

    Page<User>  allUsers = userRepository.findAll(pageable);

    System.out.println("page user content " + allUsers.getContent());
        //output page user content [User(id=2, name=Marshall, username=marshall44, [email protected], roles=[Role(name=ROLE_USER)])]

    PageImpl<User> pagei = new PageImpl<>(allUsers.getContent());

    System.out.println("page i " + pagei);
     //output  page i Page 1 of 1 containing com.serendipity.portfolio.entity.User instances

     // return ResponseEntity.ok().body(pagei);
         // this also returns {}

    return ResponseEntity.ok().body(allUsers);
}

I included the output of each intermediate variable so as to have a better sense of what is developing.

The request coming from Swagger UI is http://localhost:8080/api/v1/users?page=0&size=20.

Answer 1

The issue was with @JsonView which did not match all properties of User.

Adding this to application.properties solved the issue:

spring.jackson.mapper.DEFAULT_VIEW_INCLUSION=true