Question

我有2级客户和护照，有1-1关系。我希望Passport表将存储它的所有者Id（Customer_Id）。但保存到数据库后，Customer_Id总是为空，我的配置有什么问题。

客户类

@Entity
public class Customer {
    private int id;
    private String name;
    private Passport passport;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    public int getId() {
        return id;
    }

    @OneToOne(cascade = CascadeType.ALL, mappedBy="customer")
    public Passport getPassport() {
        return this.passport;
    }
}

Passport Class

@Entity
public class Passport {

    private int id;
    private String name;

    private Customer customer;
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    public int getId() {
        return id;
    }

    @OneToOne
    @JoinColumn(name="customer_fk")
    public Customer getCustomer() {
        return customer;
    }
}

单元测试类

public class CustomerTest extends BaseTest {
    @Autowired
    private ICustomerService customerService;

    @Test
    public void saveTest() {
        Customer customer = new Customer();
        customer.setName("Nguyễn Thành Trung");
        Passport passport = new Passport();
        passport.setName("Trung passport");
        customer.setPassport(passport);
        customerService.save(customer);
    }
}

Hibernate: insert into public.Customer (name) values (?)
Hibernate: insert into public.Passport (customer_fk, name) values (?, ?)

结果在PostgreSQL表中

客户表

| --id --- | -------- --------名称|
| --- 1 --- |-NguyễnThànhTrung-|

护照表

| --id --- | -------- --------名称| ---- --- customer_fk |
| --- 1 --- |-NguyễnThànhTrung-| ------------------ |

您可以看到customer_fk为null，这是我的问题。抱歉我的英文不好。

Answer 1

您的单元测试需要

passport.setCustomer(customer);

使用引用键的Hibernate一对一映射错误为空

1 个答案: