@Data
@Entity
public class Department {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
Integer id;
String code;
String name;
String location;
@OneToOne(mappedBy="department",cascade={CascadeType.PERSIST,CascadeType.MERGE,CascadeType.REFRESH})
Leader leader;
}
@Data
@Entity
public class Leader {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
Integer id;
String code;
String name;
@OneToOne(cascade={CascadeType.ALL})
Department department;
}
最后查詢輸出外鍵所屬表內容為空
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