用hibernate5进行查询时获取单个结果问题的代码实例

@Test
	public void testGet1(){
		Session session = null;
		Transaction tx = null;
		try {
			session = HibernateUtil.getSession();
			tx = HibernateUtil.geTransaction();
			Query query = session.createQuery("select count(b.id) from Book b");
			Object count = query.getSingleResult();
			System.out.println("图书总数："+count);
			tx.commit();
		} catch (HibernateException e) {
			if (tx!=null) {
				tx.rollback();
			}
			e.printStackTrace();
		}finally {
			HibernateUtil.closeSession();
		}
	} 

注意！！Hibernate5中把uniqueResult()换成了getSingleResult()