Criteria（條件查詢接口）
// 1.簡單查詢
List<Customer> list = session.createCriteria(Customer.class).list();// 2.條件查詢:
Criteria criteria = session.createCriteria(Customer.class);
criteria.add(Restrictions.eq("name","芙蓉"));
List<Customer> list = criteria.list();// 3.分頁查詢:
Criteria criteria = session.createCriteria(Customer.class);
criteria.setFirstResult(3);
criteria.setMaxResults(3);
List<Customer> list = criteria.list(); 
