java - 异常描述 : An incompatible mapping has been encountered between [class Entidades. Pais] 和 [class Entidades.Provincia]

Question

这是 Provincia 类及其属性，我想与 Pais 类建立 ManyToOne 关系(一个 Pais 有多个 Provincia)

public class Provincia implements Serializable {
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "idProvincia")
    private Collection<Localidad> localidadCollection;
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @Column(name = "Id")
    private Long id;
    @Basic(optional = false)
    @Column(name = "Nombre")
    private String nombre;
    @NotNull
    @Basic(optional = false)
    @ManyToOne
    @JoinColumn(name="Pais_ID", referencedColumnName = "Pais_ID")
    private Pais idPais;
}

现在类 Pais 及其属性

public class Pais implements Serializable {
    private static final long serialVersionUID = 1L;
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "idPais")
    private Collection<Provincia> provinciaCollection;
    @Id
    @Basic(optional = false)
    @Column(name = "Id")
    private Long id;
    @Basic(optional = false)
    @Column(name = "Nombre")
    private String nombre;
}

有人可以帮助我。我在 NetBeans 7.3 和 EclipseLink 中工作..谢谢

Answer 1

尝试改变如下

@JoinColumn(name="Pais_ID", referencedColumnName = "Id")
private Pais idPais;