HIbernate Session版本适配

• 如果使用的是hibernate4.2之前的版本,那么方法就这么写:

//创建配置对象
Configuration config = new Configuration().configure();
//创建服务注册对象
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
//创建会话工厂对象
sessionFactory = config.buildSessionFactory(serviceRegistry);
//会话对象
session = sessionFactory.openSession();
//开启事务
transaction = session.beginTransaction();

• 如果是hibernate4.3之后的版本,那么方法就这么写:
  导入包换:org.hibernate.boot.registry.StandardServiceRegistryBuilder;

//创建配置对象  
Configuration config = new Configuration().configure();  
//创建服务注册对象  
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(config .getProperties()).build();  
//创建会话工厂对象  
sessionFactory = config.buildSessionFactory(serviceRegistry);  
//会话对象  
session = sessionFactory.openSession();  
//开启事务  
transaction = session.beginTransaction();  

• hibernate5之后连上面的包都可以省略了:

//创建配置对象(读取配置文档)  
Configuration config = new Configuration().configure();  
//创建会话工厂对象  
sessionFactory = config.buildSessionFactory();  
//会话对象  
session = sessionFactory.openSession();  
//开启事务  
transaction = session.beginTransaction();