Hibernate 的三种查询方式

1.HQL查询方式

Session session = getSession();
List<User> list = new ArrayList<User>();
Query query = session.createQuery("from User");
list = query.list();
closeSession();
return list;
2.QBC查询方式

Session session = getSession();
List<User> list = new ArrayList<User>();
Criteria c = session.createCriteria(User.class);
list = c.list();
closeSession();
return list;3.SQL查询方式
Session session = getSession();
List<User> list = new ArrayList<User>();
SQLQuery query = session.createSQLQuery("select * from tb_user");
list = query.list();
closeSession();
return list;