Spring 基于嵌套对象和主体获取的数据查询

Question

我有 Order 实体，它与 Customer 实体有 many-to-one 关系。我想编写一个 Spring 数据 JPA 查询来获取属于 customer id.

的所有订单

下面是我的Order实体

@Data
@NoArgsConstructor
@Builder
@AllArgsConstructor
@EqualsAndHashCode(exclude = "customer")
@ToString(exclude = "customer")
@Entity
@Table(name = "orders")
public class Order {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    

private double price;
private LocalDate date;

    @ManyToOne
    @JoinColumn(name="customer_id", nullable = false)
    @JsonBackReference
    private Customer customer;
    ...

Spring 数据 JPA


@Repository
public interface OrderRepository extends JpaRepository<Order, Long> {

    @Query("select  orders from Order  where orders.customer.id = ?#{principal.id}")
    Page<Order> findAll(Pageable pageable);
}

我哪里错了？我们也可以根据 Spring Data JPA.

中的方法命名约定使用流畅的风格编写上述查询

Answer 1

此 HQL 查询应该有效：

@Query("select o from Order o inner join o.customer c where c.id = ?#{principal.id}")

根据方法名查询好像不支持join操作，至少我找不到关键字。您可以查看 list of supported keywords.

的文档

Spring 基于嵌套对象和主体获取的数据查询

Spring data query to fetch based on nested object and principal

spring-security

spring-data-jpa

spring-boot