Java Spring MVC没有'；不能将链接转换为实体

我在SpringData/Jpa中有一个映射实体

    @AllArgsConstructor(suppressConstructorProperties = true)
    @Data
    @Entity
    @Builder
    @Table(name = "requests")
    @ToString
    @NoArgsConstructor
    public class Request {
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Integer id;

        private String externalId;

        @Enumerated(EnumType.STRING)
        private DataSource dataSource;

        private String requestNumber;

        private Date requestDate;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "CLIENTID")
        private Client clientId;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name="DESTINATIONPOINTID")
        private Point destinationPointId;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "MARKETAGENTUSERID")
        private User marketAgentUserId;

        private String invoiceNumber;

        private Date invoiceDate;

        private String documentNumber;

        private Date documentDate;

        private String firma;

        private String storage;

        private String contactName;

        private String contactPhone;

        private String deliveryOption;

        @Temporal(TemporalType.TIMESTAMP)
        private Date deliveryDate;

        private Integer boxQuantity;

        private Integer weight;

        private Integer volume;

        private BigDecimal goodsCost;

        @Temporal(TemporalType.TIMESTAMP)
        @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd.MM.yyyy HH:mm")
        private Date lastStatusUpdated;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "LASTMODIFIEDBY")
        private User lastModifiedBy;

        @Enumerated(EnumType.STRING)
        private RequestStatus requestStatusId;

        private String commentForStatus;

        private Integer hoursAmount;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name= "ROUTELISTID")
        private RouteList routeListId;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "LASTVISITEDROUTEPOINTID")
        private Point lastVisitedRoutePointId;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "WAREHOUSEPOINTID")
        private Point warehousePoint;

        @OneToMany(mappedBy = "requestId")
        private List<RequestHistory> requestHistory = new ArrayList<>();
    }

我将一个字符串（到实体的正确链接）从Postman传递给它，它返回一个错误消息：

    "message": "JSON parse error: Cannot construct instance of `org.springframework.hateoas.Resource` (although at least one Creator exists): no String-argument 
    constructor/factory method to deserialize from String value ('http://localhost:8080/api/requests/8'); nested exception is 
    com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `org.springframework.hateoas.Resource` (although at least one Creator 
    exists): no String-argument constructor/factory method to deserialize from String value ('http://localhost:8080/api/requests/8')\n at [Source: (
    PushbackInputStream); line: 1, column: 1]",

我对这个难题感到困惑。

---

可能有什么问题？

您能否验证在

@RequestBody Request Request

中正确导入的是您的

Request

类，而不是属于其他包/库等的另一个

Request

类？检查一下你的进口。是的，我很确定我的进口是正确的。在你发表评论后，我甚至检查了一下。

    "message": "JSON parse error: Cannot construct instance of `org.springframework.hateoas.Resource` (although at least one Creator exists): no String-argument 
    constructor/factory method to deserialize from String value ('http://localhost:8080/api/requests/8'); nested exception is 
    com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `org.springframework.hateoas.Resource` (although at least one Creator 
    exists): no String-argument constructor/factory method to deserialize from String value ('http://localhost:8080/api/requests/8')\n at [Source: (
    PushbackInputStream); line: 1, column: 1]",