运行springboot应用程序时出现异常。
异常错误：没有为实体指定标识符：com.model.Location

@Entity
@JsonIgnoreProperties({ "hibernateLazyInitializer", "handler" })
@Table(name = "LOCATION", schema = "LOCK")
public class Location implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "LOCATION_ID")
    private int locationId;
    @Column(name = "LOCATION", nullable = false)
    private String location;

    @Column(name = "CREATED_ON", nullable = false)
    private Timestamp CREATED_ON;

    @Column(name = "UPDATED_ON", nullable = false)
    private Timestamp UPDATED_ON;

    /*getter setter methods*/
}