양방향 매핑 순환참조 문제 해결 방법(@JsonIgnore, @JsonManagedReference, @JsonBackReference, @JsonIdentityInfo) "Cannot call sendError() after the response has been committed" //User Entity @NoArgsConstructor @Getter @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; @Column private String name; @OneToMany(mappedBy = "user") private List accounts = new ArrayList..
