public Employee findByUsernameAndPassword(Employee employee) {
? ?Session session = this.getSessionFactory().openSession();
? ?Transaction tx = session.beginTransaction();
? ?String hql2 = "from Employee e where e.username= '"+employee.getUsername()+"' and e.password = '"+employee.getPassword()+"'";
? ?Query q = session.createQuery(hql2);
? ?List<Employee> list =q.list();
? ?if(list.size()>0){
? ? ? ?return list.get(0);
? ?}
? ?tx.commit();
? ?session.close();
? ?return null;
}