hibernate 注解方式一对一 基于外键的形式

    个人理解 : 基于外键的形式就是多对一的形式, 然后对外键进行唯一性约束

@Entity@Table(name = "annotation_person")public class AnnotationPerson implements java.io.Serializable {    /**     *      */    private static final long serialVersionUID = 5259471514164780589L;    @Id     @GenericGenerator(name = "generator", strategy = "uuid")    @GeneratedValue(generator = "generator", strategy = GenerationType.TABLE)    @Column(name="id",length=32)    private String id;    @Column(name = "name", length = 50)    private String name;    //没有加入 noe to noe 的概念,    //没引用对方     public String getId() {        return this.id;    }

在这里,使用man to one 的概念,给表中加上外键
@JoinColumn(name=”p_id”,unique=true)
指定该列的名字和唯一性

/** * AnnotationCard generated by hbm2java * 外键的形式加载  */@Entity@Table(name = "annotation_card")public class AnnotationCard implements java.io.Serializable {    /**     *      */    private static final long serialVersionUID = -3879101097861737759L;    @Id     @GenericGenerator(name = "generator", strategy = "uuid")    @GeneratedValue(generator = "generator", strategy = GenerationType.TABLE)    @Column(name="id",length=32)    private String id;    @Column(name = "mark", length = 50)    private String mark;    @ManyToOne    @JoinColumn(name="p_id",unique=true)    private AnnotationPerson annotationPerson;    public String getId() {        return this.id;    }

效果