小编Nab*_*zor的帖子

我在Spring + Hibernate 4.1应用程序中创建oneToMany关系时遇到了一些问题这是我的实体类.每个USER_ROLE记录都有FK到USER记录.我在互联网上找不到任何有用的东西.

@Entity
@Table( name = "USERS" )
public class User {

     long id;
     String login;
     String password;
     String name;
     String surname;
     GregorianCalendar birthDate;
     String email;
     GregorianCalendar joinDate;
     String randomKey;
     List<UserRole> userRoles = new ArrayList<UserRole>();

    public User(){ } //JavaBean Hibernate requirement

    @Id
    @GeneratedValue(generator="increment")
    @GenericGenerator(name="increment", strategy = "increment")
    @Column(name="USER_ID", unique=true, nullable=false)
    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }
...

    @OneToMany(mappedBy = "user", fetch = FetchType.LAZY)
    public List<UserRole> getUserRoles() {
        return …