我想在弹簧启动应用程序启动时将一些实体数据添加到数据库中。我使用spring data jpa repositories将数据保存到数据库。我已经尝试使用@PostConstruct
注解方法和ApplicationListener
接口等,但根本没有成功。代码在这两种情况下都执行,但不会将任何数据写入db。我怎样才能实现它?使用弹簧数据启动时将数据保存到数据库jpa
代码:
@Component
public class DatabaseFillerOnStartup implements ApplicationListener {
@Autowired
private UserRepository userRepository;
private static Logger logger = LoggerFactory.getLogger(DatabaseFillerOnStartup.class);
@Override
public void onApplicationEvent(ApplicationEvent event) {
logger.info("===================================" +event.toString());
User user = new User("test");
user.setFirstName("test");
user.setLastName("test");
user.setEmail("[email protected]");
user.setContactNumber("1234567890");
userRepository.save(user);
}
}
配置:
@Configuration
@EnableTransactionManagement
@ComponentScan("com.furniturepool.bll.config")
@PropertySource(value = "classpath:application.properties")
public class HibernateConfiguration {
@Autowired
private Environment environment;
@Bean
public LocalSessionFactoryBean sessionFactory() {
LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(dataSource());
sessionFactory.setPackagesToScan("domain.package");
sessionFactory.setHibernateProperties(hibernateProperties());
return sessionFactory;
}
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(environment.getRequiredProperty("spring.datasource.driver-class-name"));
dataSource.setUrl(environment.getRequiredProperty("spring.datasource.url"));
dataSource.setUsername(environment.getRequiredProperty("spring.datasource.username"));
dataSource.setPassword(environment.getRequiredProperty("spring.datasource.password"));
return dataSource;
}
private Properties hibernateProperties() {
Properties properties = new Properties();
properties.put("hibernate.dialect", environment.getRequiredProperty("hibernate.dialect"));
properties.put("hibernate.show_sql", environment.getRequiredProperty("hibernate.show_sql"));
properties.put("hibernate.format_sql", environment.getRequiredProperty("hibernate.format_sql"));
return properties;
}
@Bean
@Autowired
public HibernateTransactionManager transactionManager(SessionFactory s) {
HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(s);
return txManager;
}
}
库:
interface UserRepository extends CrudRepository<User, Long> {
}
我与Hibernate发现,做的最好的事情是设置日志级别尽可能高(尽管DEBUG将最有可能做到这一点),并深入研究的输出。日志中经常出现错误或至少提示接下来要尝试的提示。 – JLove
@JLove:让我检查调试模式 –
@JLove:我可以从数据库中读取数据...但保存不工作....它只是返回对象本身,没有任何类型的错误 –