Java 返回列表<；对象>；使用Hql查询从投影接口

我有一个lineItem实体

@Entity
@JsonInclude(value = Include.NON_NULL)
public class LineItem extends AbstractEntity<LineItem>
{
    private int rank;
    @JsonIgnore
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(nullable = false)
    private OrderEntity orderEntity;
    @ManyToOne(optional = false, fetch = FetchType.EAGER)
    private Service service;

    private long quantity;
    private BigDecimal unitPrice;

    @ElementCollection
    private List<HyperFile> files = new ArrayList<HyperFile>();

和行项目的投影dto

ublic interface RFQDto
{
    Service getService();

    List<HyperFile> getFiles();

    LineItemStatus getStatus();

    UUID getId();

    LocalDateTime getUpdated();

    long getQuantity();

    OrderEntity getOrderEntity();

    interface OrderEntity
    {
        OrderStatus getStatus();
    }

    interface List<HyperFile>
    {
        UUID getId();

    }

当从查询中删除“l.files As files”时，它会运行，但在files字段中返回null

public interface LineItemRepository
        extends PagingAndSortingRepository<LineItem, UUID>, JpaSpecificationExecutor<LineItem>
{
    Optional<LineItem> findOneByIdAndOrderEntity_Organization_Id(UUID id, UUID orgId);

    @Query("SELECT l.id AS id, l.service AS service," + "l.status AS status,l.updated AS updated," + "l.files As files"
            + "l.quantity AS quantity," + "l.orderEntity As orderEntity FROM LineItem l "
            + "WHERE l not in (select q.lineItem from Quotation q where q.partner=?2)   "
            + "and l.service in (?1) and l.status=?3 and l.orderEntity.status=?4")
    Page<RFQDto> findByServiceIn(List<Service> services, Organization org, LineItemStatus status,
            OrderStatus orderStatus, Pageable page);
...

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如何使用query返回文件作为对象列表

出现错误的根本原因是什么？我怀疑Spring数据不喜欢混合基于接口和基于类的投影。尝试为

Hyperfile

getter声明一个接口，并将其用作

RFQDto.files

列表的元素类型，而不是在投影接口内声明它。如果这样做不起作用，Hyperfile在元素集合中出现错误的根本原因是什么？我怀疑Spring数据不喜欢混合基于接口和基于类的投影。尝试为

Hyperfile

getter声明一个接口，并将其用作

RFQDto.files

列表的元素类型，而不是在投影接口内声明它，如果这样做不起作用，则Hyperfile在元素集合中

public interface LineItemRepository
        extends PagingAndSortingRepository<LineItem, UUID>, JpaSpecificationExecutor<LineItem>
{
    Optional<LineItem> findOneByIdAndOrderEntity_Organization_Id(UUID id, UUID orgId);

    @Query("SELECT l.id AS id, l.service AS service," + "l.status AS status,l.updated AS updated," + "l.files As files"
            + "l.quantity AS quantity," + "l.orderEntity As orderEntity FROM LineItem l "
            + "WHERE l not in (select q.lineItem from Quotation q where q.partner=?2)   "
            + "and l.service in (?1) and l.status=?3 and l.orderEntity.status=?4")
    Page<RFQDto> findByServiceIn(List<Service> services, Organization org, LineItemStatus status,
            OrderStatus orderStatus, Pageable page);
...

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: