Hibernate测试

//1 加载hibernate.cfg.xml配置文件及映射信息
          //Configuration cfg=new Configuration();//这么写表明默认加载文件为properties
          Configuration cfg=new Configuration().configure();//默认会在src下搜索hibernate.cfg.xml文件
          //2 得到SessionFactory
          SessionFactory sf=cfg.buildSessionFactory();
          //3得到Session
          Session session=sf.openSession();
          //4开启事务
          Transaction tx=session.beginTransaction();
          try{
               //Emp emp=(Emp) session.get(Emp.class, id);
               //session.delete(emp);
               Emp emp=new Emp();
               emp.setBirthday(new Date());
               emp.setName("王五");
               emp.setState(true);
               //5.持久化
               session.save(emp);
               //6 提交事务
               tx.commit();
          }catch(Exception e){
               tx.rollback();
               e.printStackTrace();
          }finally{
               //7释放资源,关闭session
               session.close();
          }

     }