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我是新的基于弹簧的项目, 我有要求与OneToMany创建订单和发票之间的实体关系映射,并尝试以下映射,但最后映射错误, 请你指出我解决这个问题。引起:org.hibernate.AnnotationException:mappedBy引用一个未知的目标实体属性客户发票
@Entity
@Table(name="Customers")
public class Customers implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GenericGenerator(name = "generator", strategy = "increment")
@GeneratedValue(generator = "generator")
@Column(name = "CustomerId", nullable = false)
private Long CustomerId;
@OneToMany(cascade=CascadeType.ALL, mappedBy="Customers")
private Set<Orders> Orders = new HashSet<Orders>();
}
@Entity
@Table(name="Orders")
public class Orders implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GenericGenerator(name = "generator", strategy = "increment")
@GeneratedValue(generator = "generator")
@Column(name = "orderId", nullable = false)
private Long orderId;
@JoinColumn(name="CustomerId")
@ManyToOne
private Customers customers;
@OneToOne (optional=false,cascade=CascadeType.ALL, mappedBy="orders",targetEntity=Invoices.class)
private Invoices invoices;
}
@Entity
@Table(name="Invoices")
public class Invoices implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GenericGenerator(name = "generator", strategy = "increment")
@GeneratedValue(generator = "generator")
@Column(name = "invoiceId", nullable = false)
private Long invoiceId;
@OneToOne(optional=false,cascade=CascadeType.ALL, mappedBy="invoices",targetEntity=Orders.class)
private Orders orders;
}
错误消息: 产生的原因:org.hibernate.AnnotationException:在com.mycompany.myproject.persist com.mycompany.myproject.persist.entity.Orders.Customers:的mappedBy引用一个未知目标实体属性。 entity.Customers.Orders
感谢阿兰,它的赞赏。有用。并帮助了我很多。 –