Java JPA表到实体的转换不正确

我在这里试图实现的是使用SpringJPA启动一个sql查询，并获取返回的Entite，然后在ay结构中转换对象

问题是，当两个表和实体具有相同的列时，JPA无法区分这些属性的值，并将错误的值映射到实体，以下是我的代码：

DAO

public class EMIDao implements IEMIDao {

    @Autowired
    private EntityManager entityManager;

    @Override
    public List<EMI> fetch(Integer month) {
        Query query = entityManager.createNativeQuery(
                "SELECT DISTINCT e.*, p.*, l.*, i.* FROM emi e JOIN loan l ON l.loan_id = e.loan_id LEFT JOIN product p ON p.product_id = l.product_id LEFT JOIN item i ON i.product_id = p.product_id LEFT JOIN item_return ir ON ir.item_id = i.item_id WHERE e.date = ?1 AND ir.item_return_id IS NULL",
                "EMIProductDTO");
        query.setParameter(1, "2020-" + month + "-16");
        List<Object[]> objects = query.getResultList();

        return EMITransformer.transform(objects);
    }

}

产品实体

@Entity
@Table(name = "product")
@SqlResultSetMapping(name = "ProductItemDTO", entities = { @EntityResult(entityClass = Product.class),
        @EntityResult(entityClass = Item.class) })
public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "product_id")
    private Integer id;
    @Column(name = "order_number")
    private String orderNumber;
    @Column(name = "product_type")
    private String type;
    @Column(name = "price")
    private Integer price;
    @Column(name = "created_on")
    private Timestamp createdOn;

@Entity
@Table(name = "item")
public class Item {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "item_id")
    private Integer id;
    @Column(name = "type")
    private String type;
    @Column(name = "brand")
    private String brand;
    @Column(name = "price")
    private Integer price;
    @Column(name = "product_id")
    private Integer productId;
    @Column(name = "created_on")
    private Timestamp createdOn;

项目实体

@Entity
@Table(name = "product")
@SqlResultSetMapping(name = "ProductItemDTO", entities = { @EntityResult(entityClass = Product.class),
        @EntityResult(entityClass = Item.class) })
public class Product {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "product_id")
    private Integer id;
    @Column(name = "order_number")
    private String orderNumber;
    @Column(name = "product_type")
    private String type;
    @Column(name = "price")
    private Integer price;
    @Column(name = "created_on")
    private Timestamp createdOn;

@Entity
@Table(name = "item")
public class Item {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "item_id")
    private Integer id;
    @Column(name = "type")
    private String type;
    @Column(name = "brand")
    private String brand;
    @Column(name = "price")
    private Integer price;
    @Column(name = "product_id")
    private Integer productId;
    @Column(name = "created_on")
    private Timestamp createdOn;

---

每件事都按预期进行，我无法改变使用onetoonemapping注释的方法，只希望jpa正确地映射价格字段。非常感谢您的帮助。提前谢谢。

您是否尝试过为列添加别名？p、 价格为产品价格，即价格为商品价格……然后我必须指定查询中的每一列，我将更多地查看hibernate addEntity的行>>