Spring Boot Hibernate 创建名称错误的表

Question

当我运行我的项目时，Hibernate 会自动创建 table 名称错误的项目。我有两个 tables 用户和角色，还有三个 classes：摘要 class IdField.java:

@Entity
public abstract class IdField {

    @Id @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;
    //constructors and getters setters

User.java class:

@Entity
@Table(name = "user", schema = "quiz_app")
public class User extends IdField{

    @Column(name = "user_name")
    private String userName;
    @Column(name = "password")
    private String password;
    @Column(name = "first_name")
    private String firstName;
    @Column(name = "last_name")
    private String lastName;
    @Column(name = "email")
    private String email;

    @ManyToMany(fetch = FetchType.EAGER)
    private Collection<Role> roles = new ArrayList<>();
    //constructors and getters setters

和Role.java class:

@Entity
@Table(name = "role", schema = "quiz_app")
public class Role extends IdField{

    @Enumerated(EnumType.ORDINAL)
    @Column(name = "role_name")
    private RoleName roleName;
    //constructors and getters setters

并且 Hibernate 创建了两个 tables，名称错误，如 id_field 和 id_field_roles：

但我想要 table 名称，因为它在 @Table 注释中，如“用户”和“角色”

Answer 1

熟悉继承策略：

https://thorben-janssen.com/complete-guide-inheritance-strategies-jpa-hibernate/

在我看来你正在寻找@MappedSuperclass

If you just want to share state and mapping information between your entities, the mapped superclass strategy is a good fit and easy to implement. You just have to set up your inheritance structure, annotate the mapping information for all attributes and add the @MappedSuperclass annotation to your superclass. Without the @MappedSuperclass annotation, Hibernate will ignore the mapping information of your superclass.

最重要的是：如果您的共享部分只是 id 字段，顾名思义，继承看起来有点矫枉过正。

Spring Boot Hibernate 创建名称错误的表

Spring Boot Hibernate creates tables with wrong names

java

hibernate

spring-data-jpa

spring-boot