java - Hibernate 5，Oracle12c 标识列 - 找不到序列

Question

我在尝试将 Person 记录插入数据库时​​遇到以下错误。

Caused by: java.sql.SQLSyntaxErrorException: ORA-02201: sequence not allowed here

我正在使用 Hibernate 5.2.12.Final、Oracle 12 c 数据库并使用数据库中的标识列作为“id”。

select 1 from dual

有效。所以我确信数据库连接是成功的。

配置如下:

数据库:

CREATE TABLE person
(
id NUMBER(18) GENERATED ALWAYS AS IDENTITY
            INCREMENT BY 1 START WITH 1 NOT NULL,
name VARCHAR2(40) NOT NULL
);

ALTER TABLE person ADD CONSTRAINT pk_person PRIMARY KEY (id);

hibernate 工具

public class HibernateUtil {
private static StandardServiceRegistry registry;
private static SessionFactory sessionFactory;

public static SessionFactory getSessionFactory() {
    if (sessionFactory == null) {


        StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder()
                .configure(new File("path-to-hibernate.cfg.xml"))
                .build();

        Metadata metadata = new MetadataSources(standardRegistry)
                .addAnnotatedClass(Person.class)
                .addAnnotatedClassName("com.example.entity.Person")
                .getMetadataBuilder()
                .applyImplicitNamingStrategy(ImplicitNamingStrategyJpaCompliantImpl.INSTANCE)
                .build();

        sessionFactory = metadata.getSessionFactoryBuilder()
                .build();


    }
    return sessionFactory;
}

public static void shutdown() {
    if (registry != null) {
        StandardServiceRegistryBuilder.destroy(registry);
    }
}
}

个人实体:

@Entity
@Table(name = "Person")
public class Person implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

public Person(){}

public void setId(Long id) {
    this.id = id;
}

public void setName(String name) {
    this.name = name;
}

public Person(final String name){
    this.name = name;
}

public Long getId() {
    return id;
}

public String getName() {
    return name;
}

@Column(name = "name")
private String name;
}

主要():

Session session = HibernateUtil.getSessionFactory().openSession();
    session.beginTransaction();

    session.save(new Person("code")); // Error here

    session.getTransaction().commit();
    session.close();

    HibernateUtil.shutdown();

非常感谢任何帮助。:)

Answer 1

相反，GenerationType.IDENTITY 尝试使用 GenerationType.SEQUENCE，它应该可以工作，如果不能，请告诉我，因为除了那个之外，您的代码看起来没有任何问题。