在我的应用程序中,每个客户端都有多个数据库。我想按照登录到应用程序中的客户端访问数据库。在Hibernate中动态创建SessionFactory
有两种选择:
1)在hibernate-config.xml文件中使用多个SessionFactory条目。
2)重复的hibernate pojo文件。
但我想在运行时创建LocalSessionFactoryBean,SessionFactory,TransactionManager所有这些。那我该怎么做? 我不想在hibernate-config.xml文件中做多个SessionFactory和DataSource条目。
我已经试过下面的代码片段。
@Configuration
@EnableTransactionManagement
public class PersistenceHibernateConfig
{
private String driverClassName;
private String url;
String hibernateDialect;
boolean hibernateShowSql;
@Bean
public LocalSessionFactoryBean alertsSessionFactoryBean()
{
final LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
sessionFactory.setDataSource(this.restDataSource());
sessionFactory.setPackagesToScan(new String[] { "com.ezdi.cac.bean.table" });
sessionFactory.setHibernateProperties(this.hibernateProperties());
return sessionFactory;
}
@Bean
public DataSource restDataSource()
{
final DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(this.driverClassName);
dataSource.setUrl(this.url);
dataSource.setUsername("root");
dataSource.setPassword("root");
return dataSource;
}
@Bean
public HibernateTransactionManager transactionManager()
{
final HibernateTransactionManager txManager = new HibernateTransactionManager();
txManager.setSessionFactory(this.alertsSessionFactoryBean().getObject());
return txManager;
}
@Bean
public PersistenceExceptionTranslationPostProcessor exceptionTranslationPostProcessor()
{
return new PersistenceExceptionTranslationPostProcessor();
}
@Bean
public PersistenceExceptionTranslator exceptionTranslator()
{
return new HibernateExceptionTranslator();
}
final Properties hibernateProperties()
{
return new Properties()
{
{
this.put("persistence.dialect", PersistenceHibernateConfig.this.hibernateDialect);
this.put("hibernate.show_sql", PersistenceHibernateConfig.this.hibernateShowSql);
}
};
}
/**
* @return the driverClassName
*/
public String getDriverClassName()
{
return driverClassName;
}
/**
* @param driverClassName the driverClassName to set
*/
public void setDriverClassName(String driverClassName)
{
this.driverClassName = driverClassName;
}
/**
* @return the url
*/
public String getUrl()
{
return url;
}
/**
* @param url the url to set
*/
public void setUrl(String url)
{
this.url = url;
}
/**
* @return the hibernateDialect
*/
public String getHibernateDialect()
{
return hibernateDialect;
}
/**
* @param hibernateDialect the hibernateDialect to set
*/
public void setHibernateDialect(String hibernateDialect)
{
this.hibernateDialect = hibernateDialect;
}
/**
* @return the hibernateShowSql
*/
public boolean isHibernateShowSql()
{
return hibernateShowSql;
}
/**
* @param hibernateShowSql the hibernateShowSql to set
*/
public void setHibernateShowSql(boolean hibernateShowSql)
{
this.hibernateShowSql = hibernateShowSql;
}
}
但每当我经过的LocalSessionFactoryBean并通过HibernateTransactionManager的得到的SessionFactory,我得到了它null.I不知道为什么我得到空的原因是什么?