我与一个具有多个Room对象的Building对象有一个多对一关系，但是当我调用一个building-object的存储库时，我得到了如下所示的结果：
{"id":3,"street":"Musterstreet","houseNumber":"10","postCode":"111111","city":"Heilbronn","rooms":[{},{}]}
我哪里搞错了，Room-list没有显示每个Room-object的任何数据，它清楚地知道列表中有2个Room-object
我的实体如下所示

@Entity
@Table(name = "buildings")
@NoArgsConstructor
@ToString(exclude = {"rooms"})
@Getter
@Setter
public class Building {

    @Id
    @GeneratedValue
    private Integer id;

    @NotNull
    @Column(nullable = false)
    private String street;

    @NotNull
    @Column(nullable = false)
    private String houseNumber;

    @NotNull
    @Column(nullable = false)
    private String postCode;

    @NotNull
    @Column(nullable = false)
    private String city;

    @OneToMany(fetch =  FetchType.EAGER, mappedBy = "building", cascade = CascadeType.ALL, orphanRemoval = true)
    private Set<Room> rooms = new HashSet<>();
}

和

@Entity
@Table(name = "room")
@NoArgsConstructor
@ToString(exclude = {"building"})
public class Room{

    @Id
    @GeneratedValue
    private Integer id;

    @NotNull
    @Column(nullable = false)
    private String roomName;

    @ManyToOne(fetch =  FetchType.EAGER)
    @JoinColumn(name = "building_id", nullable = false)
    private Building building; 
}

直接回购接口

public interface BuildingRepository extends JpaRepository<Building, Integer> {
    Optional<Building> findById(int id);
    Optional<Building> findByStreet(String street);
}

最后调用控制器方法

@GetMapping("/buildings/{id}")
    public ResponseEntity<Building> getBuildingById(@PathVariable("id") Integer id) {
        Building building = buildingService.getBuildingById(id);
        return new ResponseEntity<>(building, HttpStatus.OK);
    }

我想做的是只使用Building-object，这样当我需要某个Room-object时，它就可以从Building的列表中提取出来