Question

我有一个问题是hibernate的配置类，我正在尝试为两个数据库mysql创建连接器。例如，如果我创建了一个实例数据源 - 一切都很好，但在追加另一个实例数据源之后：

说明

方法sessionFactory的参数0   pl.lasota.databaseaccess.ConfigBeanForDatabase需要一个bean，   但发现了2个：      - dataSource：由类路径资源[pl / lasota / databaseaccess / ConfigBeanForDatabase.class]中的方法'dataSource'定义      - dataSourceUser：由类路径资源[pl / lasota / databaseaccess / ConfigBeanForDatabase.class]中的方法'dataSourceUser'定义

动作：

考虑将其中一个bean标记为@Primary，更新消费者   接受多个bean，或使用@Qualifier来识别bean   应该消费

豆类标注注释资格。我不明白为什么这不能正常工作。

这是我的配置类：

@Configuration
public class ConfigBeanForDatabase {

 @Bean(name = "dataSource")
 public DataSource dataSource() {
  BasicDataSource dataSource = new BasicDataSource();
  dataSource.setDriverClassName("com.mysql.jdbc.Driver");
  dataSource.setUrl("jdbc:mysql://localhost:3306/mysql1");
  dataSource.setUsername("****");
  dataSource.setPassword("****");
  return dataSource;
 }

 @Autowired
 @Bean(name = "sessionFactory")
 public SessionFactory sessionFactory(
  @Qualifier("dataSource") DataSource dataSource) {
  LocalSessionFactoryBuilder sessionBuilder = new LocalSessionFactoryBuilder(dataSource);
  sessionBuilder.addProperties(getHibernateProperties());
  sessionBuilder.addAnnotatedClasses(Comment.class);
  return sessionBuilder.buildSessionFactory();
 }

 @Autowired
 @Bean
 public HibernateTransactionManager transactionManager(
  @Qualifier("sessionFactory") SessionFactory sessionFactory) {
  HibernateTransactionManager transactionManager = new HibernateTransactionManager(
   sessionFactory);
  return transactionManager;
 }
 @Autowired
 @Bean
 public MysqlPlaceDaoImpl mysqlPlaceDaoImpl(@Qualifier("sessionFactory") SessionFactory sessionFactory) {
  return new MysqlPlaceDaoImpl(sessionFactory);
 }

 @Autowired
 @Bean
 public MysqlSiteDaoImpl mysqlSiteDaoImpl(@Qualifier("sessionFactory") SessionFactory sessionFactory) {
  return new MysqlSiteDaoImpl(sessionFactory);
 }





 @Bean(name = "dataSourceUser")
 public DataSource dataSourceUser() {
  BasicDataSource dataSource = new BasicDataSource();
  dataSource.setDriverClassName("com.mysql.jdbc.Driver");
  dataSource.setUrl("jdbc:mysql://localhost:3306/mysql2");
  dataSource.setUsername("****");
  dataSource.setPassword("****");
  return dataSource;
 }

 @Autowired
 @Bean(name = "sessionFactoryUser")
 public SessionFactory sessionFactoryUser(@Qualifier("dataSourceUser") DataSource dataSource) {
  LocalSessionFactoryBuilder sessionBuilder = new LocalSessionFactoryBuilder(dataSource);
  sessionBuilder.addProperties(getHibernateProperties());
  sessionBuilder.addAnnotatedClasses(User.class);
  return sessionBuilder.buildSessionFactory();
 }

 @Autowired
 @Bean
 public HibernateTransactionManager transactionManagerUser(
  @Qualifier("sessionFactoryUser") SessionFactory sessionFactory) {
  HibernateTransactionManager transactionManager = new HibernateTransactionManager(
   sessionFactory);
  return transactionManager;
 }


 @Autowired
 @Bean
 public MysqlUserDaoImpl mysqlUserDaoImpl(@Qualifier("sessionFactoryUser") SessionFactory sessionFactory) {
  return new MysqlUserDaoImpl(sessionFactory);
 }


 private Properties getHibernateProperties() {
  Properties properties = new Properties();
  properties.put("hibernate.show_sql", "true");
  properties.put(" hibernate.cache.provider_configuration_file_resource_path", "ehcache.xml");
  properties.put("hibernate.dialect", "org.hibernate.dialect.MySQL5Dialect");
  properties.put("hibernate.hbm2ddl.auto", "update");
  properties.put("hibernate.connection.useUnicode", true);
  properties.put("hibernate.connection.characterEncoding", "UTF-8");
  properties.put("hibernate.cache.use_second_level_cache", true);
  properties.put("hibernate.cache.region.factory_class", "org.hibernate.cache.ehcache.EhCacheRegionFactory");
  return properties;
 }
}

我尝试添加注释@primary，也将类与两个类的配置分开。抱歉我的英文。

Hibernate，Spring和两个数据库

0 个答案: