导致PropertyReferenceException的原因

Question

我遇到以下错误，但无法弄清楚导致问题的原因。

2024-10-19T11:26:28.546+05:30  WARN 9455 --- [rentsysapi] [nio-8080-exec-2] .m.m.a.ExceptionHandlerExceptionResolver : Resolved [org.springframework.data.mapping.PropertyReferenceException: No property 'asset' found for type 'AssetVehicle']

资产载体实体：

@NoArgsConstructor
@AllArgsConstructor
@Getter
@Setter
@Entity
@Table(name = "asset_vehicle", schema = "public")
@EntityListeners(AuditingEntityListener.class)
@Audited
public class AssetVehicle extends BaseExpireEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.UUID)
    @UuidGenerator
    @Column(updatable = false, nullable = false, columnDefinition = "UUID")
    private UUID assetVehicleId;

    @Enumerated(value = EnumType.STRING)
    @Column(nullable = false)
    private AssetStatus status = AssetStatus.AVAILABLE;

    private String vehicleNumber;
    private String vin;
    private String enginNumber;
    private String chassisNumber;
    private String color;

    /// Year of manufacture
    private Integer yom;

    /// Year of registration
    private Integer yor;

    @Column(columnDefinition = "TEXT")
    private String remark;

    @Column(nullable = false, updatable = false)
    private UUID primaryBranchId;

    //region relationships
    @ManyToOne
    @JoinColumn(name = "company_id", nullable = false, updatable = false)
    private Company company;

    @ManyToOne
    @JoinColumn(name = "owner_id")
    private UserEntity owner;

    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinColumn(name = "vehicle_id", nullable = false)
    private Vehicle vehicle;

    @OneToMany(mappedBy = "assetVehicle", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
    private Set<AssetVehicleMedia> media = new HashSet<>();

    @OneToMany(mappedBy = "assetVehicle", cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.LAZY)
    private Set<AssetVehicleDocument> documents = new HashSet<>();

    @ManyToMany(fetch = FetchType.LAZY)
    @JoinTable(
            name = "asset_vehicle_branch",
            joinColumns = @JoinColumn(name = "asset_vehicle_id"),
            inverseJoinColumns = @JoinColumn(name = "branch_id")
    )
    private Set<Branch> branches = new HashSet<>();
    //endregion
}

资产车辆库：

@Repository
public interface AssetVehicleRepository extends JpaRepository<AssetVehicle, UUID>, JpaSpecificationExecutor<AssetVehicle> {

    Boolean existsByCompanyAndVehicleNumber(Company company, String vehicleNumber);

    Optional<AssetVehicle> getByVehicleNumber(String vehicleNumber);
}

资产车辆服务：

@Service
public class AssetVehicleServiceImpl implements AssetVehicleService {
    @Autowired
    CompanyService companyService;

    @Autowired
    AssetVehicleRepository assetVehicleRepository;
    @Autowired
    ModelMapper modelMapper;

    @Override
    public Boolean existsByCompanyVehicleNumber(UUID companyId, String vehicleNumber) {
        Company company = companyService.findById(companyId);
        return assetVehicleRepository.existsByCompanyAndVehicleNumber(company, vehicleNumber);
    }

    @Override
    public AssetVehicle getByVehicleNumber(String vehicleNumber) {
        return assetVehicleRepository.getByVehicleNumber(vehicleNumber)
                .orElseThrow(() -> new NotFoundException("Vehicle not found with vehicle number: " + vehicleNumber));
    }

    @Override
    public AssetVehicleDto getByVehicleNumberDtoDto(String vehicleNumber) {
        return modelMapper.map(getByVehicleNumber(vehicleNumber), AssetVehicleDto.class);
    }

    @Override
    public Page<AssetVehicle> getAllAssets(Pageable pageable, AssetStatus status, UUID companyId, UUID ownerId) {
        Specification<AssetVehicle> specification = Specification.where(AssetVehicleSpecification.hasStatus(status))
                .and(AssetVehicleSpecification.hasCompany(companyId))
                .and(AssetVehicleSpecification.hasOwner(ownerId));

        return assetVehicleRepository.findAll(specification, pageable);
    }

    @Override
    public Page<AssetVehicleDto> getAllAssetsDto(Pageable pageable, AssetStatus status, UUID companyId, UUID ownerId) {
        Page<AssetVehicle> assets = getAllAssets(pageable, status, companyId, ownerId);
        return assets.map(asset -> modelMapper.map(asset, AssetVehicleDto.class));
    }
}

我是 Spring Boot 开发的新手，有移动开发（Android、iOS、Flutter）背景。我已经被这个问题困扰了大约两天，但还没有找到解决方案。

我尝试重命名实体和表，但这并没有解决问题。

以前，我的资产只有一个表结构。我意识到随着数据库的增长，单个表可能会影响性能，因此我决定将资产类型分成单独的表，例如车辆、power_tool 和发电机。目前，我只有车辆类型。

Answer 1

发生

PropertyReferenceException

是因为 Spring Data JPA 试图引用实体类 (AssetVehicle) 中的属性 (asset)，但该属性在那里不存在。存储库方法名称应与实体类中的字段相对应。