這個問題只發生在這個控制器上，因為我在模型中添加了一個自我關系。我在其他帖子和谷歌中閱讀和搜索，任何解決方案似乎都有效。我嘗試設置@JsonIdentityInfo，添加@JsonBackReference 和@JsonManagedReference，顛倒這個標簽的順序，將消耗添加到 rest 方法，但一切正常模型：@Entity@JsonIdentityInfo(  generator = ObjectIdGenerators.PropertyGenerator.class,   property = "code")@Table (name = "EP7_TRS_CODIGOS")public class Code implements Serializable {    private static final long serialVersionUID = 2L;    @Id    @Column (name = "COD_CODIGO")    private String code;    @Column (name = "DES_CODIGO")    private String description;    @Column (name = "COD_TIPO")    private String type;    @JsonManagedReference    @ManyToOne    @JoinColumn (name = "ID_ORIGEN", referencedColumnName = "ID_ORIGEN")    private Origin origin;    @JsonBackReference    @ManyToOne    @JoinColumn (name="COD_CODIGO_OBJ", referencedColumnName = "COD_CODIGO")    private Code parent;    @JsonManagedReference    @OneToMany (mappedBy = "parent", fetch = FetchType.LAZY)    private List<Code> sons;控制器：@PostMapping(value = "/code",    consumes = MediaType.APPLICATION_JSON_UTF8_VALUE,    produces = {MediaType.APPLICATION_JSON_UTF8_VALUE})public ResponseEntity<Code> saveOrUpdateCode (@RequestHeader HttpHeaders httpHeaders, @RequestBody Code code){    logger.info(">>>> Entra en el controlador saveOrUpdateCode");    if (httpHeaders == null || !authorized(httpHeaders)) {        logger.error(">>>> Error de autentificacion");        return new ResponseEntity<>(HttpStatus.UNAUTHORIZED);    }     return new ResponseEntity<>(cs.save(code), HttpStatus.CREATED);}