如何解决用于在spring中从多个表中获取数据的自定义查询
实体:
@Entity(name = "ap_order_paid")
@Component
public class ApOrderPaid {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private Long order_number;
@Transient
private Long invoiceNumber;
private Long cheqe_number;
//getter setter
}
public class Orders {
private long order_number;
private String invoice_number;
}
select
v.order_number,v.id,o.invoice_number as invoiceNumber
from ap_order_paid as v,orders o
where v.cheqe_number like '%1234%' and v.order_number = o.order_number
但是当我在带有 @Query
注释的 spring 存储库中运行时,该注释仅提供发票编号的数据
@Query(value="select v.*,o.invoice_number from ap_order_paid as v,orders o where v.cheqe_number like %?1% and v.order_number = o.order_number",nativeQuery = true)
List<ApOrderPaid> getorderTaskPaidByCheqNo(String cheqe_number);
解决方法
您没有在任何列上提及任何类型的 @column 注释。您正在尝试获取“invoiceNumber”,这是一个“瞬态”字段。使用适当的注解,以便 hibernate 能够将 DB 列与实体对象进行映射。
,将关联映射为 @ManyToOne
,如下所示:
@Entity(name = "ap_order_paid")
public class ApOrderPaid {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@ManyToOne(fetch = LAZY)
@JoinColumn(name = "order_number")
private Orders order;
private Long cheqe_number;
//getter setter
}
@Entity
public class Orders {
@Id
private long order_number;
private String invoice_number;
}
并使用这样的 HQL/JPQL 查询:
@Query("select v from ap_order_paid as v join fetch v.order where v.cheqe_number like %?1%")
List<ApOrderPaid> getOrderTaskPaidByCheqNo(String cheqe_number);
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