我有简单的 spring-jpa 配置，我已经配置了 Hibernate 的ImprovedNamingStrategy. 这意味着如果我的实体类有一个变量userName，那么 Hibernate 应该将其转换为user_name用于查询数据库。但是在我升级到 Hibernate 5 后，这种命名转换停止工作。我收到错误：
错误：“字段列表”中的未知列“user0_.userName”
这是我的休眠配置：
@Configuration
@EnableJpaRepositories("com.springJpa.repository")
@EnableTransactionManagement
public class DataConfig {
@Bean
public DataSource dataSource(){
DriverManagerDataSource ds = new DriverManagerDataSource();
ds.setDriverClassName("com.mysql.jdbc.Driver");
ds.setUrl("jdbc:mysql://localhost:3306/test");
ds.setUsername("root");
ds.setPassword("admin");
return ds;
}
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory(){
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setShowSql(Boolean.TRUE);
vendorAdapter.setDatabase(Database.MYSQL);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
factory.setDataSource(dataSource());
factory.setPackagesToScan("com.springJpa.entity");
Properties jpaProperties = new Properties();
jpaProperties.put("hibernate.ejb.naming_strategy","org.hibernate.cfg.ImprovedNamingStrategy");
jpaProperties.put("hibernate.dialect","org.hibernate.dialect.MySQL5InnoDBDialect");
factory.setJpaProperties(jpaProperties);
factory.afterPropertiesSet();
return factory;
}
@Bean
public SharedEntityManagerBean entityManager() {
SharedEntityManagerBean entityManager = new SharedEntityManagerBean();
entityManager.setEntityManagerFactory(entityManagerFactory().getObject());
return entityManager;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory().getObject());
return txManager;
}
@Bean
public ImprovedNamingStrategy namingStrategy(){
return new ImprovedNamingStrategy();
}
}
这是我的实体类：
@Getter
@Setter
@Entity
@Table(name="user")
public class User{
@Id
@GeneratedValue
private Long id;
private String userName;
private String email;
private String password;
private String role;
}
我不想在 @Column 注释中明确命名我的数据库字段。我想要我的配置可以隐式地将驼峰大小写转换为下划线。
请指导。