这是我两堂课的代码:
@Entity
public class FicheMetier implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int Id;
private String Name;
@OneToOne
private Employe employe;
private String description;
@ManyToOne(cascade = CascadeType.ALL)
private MatriceComp matricecomp;
@Entity
public class MatriceComp implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int Id;
@Enumerated(EnumType.STRING)
@NotNull
private Category category;
private String Description;
@ManyToMany(cascade = CascadeType.ALL)
private List<Competance> competances;
并且此服务正在尝试运行:
@Override
public void affecterMat(MatriceComp matrice,FicheMetier ficheMetier) {
FicheMetier us= em.find(FicheMetier.class,ficheMetier.getId());
us.setMatricecomp(matrice.getId());
}
[当我尝试使用矩阵设置属性@ManyToOne matricecomp时,我得到EJBTransactionRolledbackException。但是!如果将其更改为@OneToOne matricecomp,并且我使用matrice设置了该属性,那么它会起作用]
这是我的两个类的代码:@Entity公共类FicheMetier实现了Serializable {private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = ...
使用这种方式