我的spring-jpa配置非常简单，其中我配置了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以查询数据库。但是在升级到Hibernate 5后，这种命名转换停止工作了。我收到了以下错误：
ERROR: Unknown column 'user0_.userName' in 'field list'
这是我的Hibernate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 注解中显式命名我的数据库字段。我希望我的配置可以隐式地将驼峰命名法转换成下划线命名法。
请指导。