Java JpaSystemException:无法读取hi值-您需要填充表：

我有web jpa项目，我的项目来自postgres和mysql数据库，但当我在mysql数据库中添加新数据时，我得到异常：

HTTP Status 500 - Request processing failed; nested exception is org.springframework.orm.jpa.JpaSystemException: could not read a hi value - you need to populate the table: hibernate_sequence; nested exception is org.hibernate.id.IdentifierGenerationException: could not read a hi value - you need to populate the table: hibernate_sequence

ERROR [http-nio-8080-exec-5] <unknown>.<unknown> could not read a hi value - you need to populate the table: hibernate_sequence

这是我的实体类： 用户

@Entity
@Table(name = "USERS_TABLE")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    @Column(name = "USERS_NAME")
    private String name;
    @Column(name = "USERS_EMAIL")
    private String email;
}

UserKey

@Entity
@Table(name = "USERS_KEY")
public class UserKey {
    @Id
    @GeneratedValue
    private Long id;
    @Column(name = "KEY_COLUMN")
    private int key;
    @OneToOne
    @JoinColumn(name = "USERS_ID")
    private User user;
}

---

问题解决了，需要添加

insert到mysqldb中。hibernate_序列（next_val）值（0）

我将推荐

insert到hibernate_序列（next_val）值（1）插入0似乎会导致我出现意外行为。我不知道为什么会发生这种情况，但value
0
会导致第一次
repo.save（）
触发两次。
@Entity
@Table(name = "USERS_KEY")
public class UserKey {
    @Id
    @GeneratedValue
    private Long id;
    @Column(name = "KEY_COLUMN")
    private int key;
    @OneToOne
    @JoinColumn(name = "USERS_ID")
    private User user;
}