这一句Login l=logindao.validateLogin(login.getUsername(), login.getPassword());
public class LoginDAO extends BaseDAO implements ILoginDAO {
@SuppressWarnings("unchecked")
public Login validateLogin(String username, String password) {
// TODO Auto-generated method stub
String sql=" from Login where username=? and password=?";
Session session=(Session) getSession();
//BaseDAO HibernateSessionFactory = null;
//Query query=HibernateSessionFactory.getSession().createQuery(sql);
这一句Query query=(Query) session.createQuery("from Login l where l.username=? and l.password=?");
始终报这个错误。。怎么回事