StringBuffer hql = new StringBuffer
(" select r.rolename as rolename, r.username as username from RoleHejian r ");
List<RoleHejian> list = roleHejianDao.createQuery(hql.toString()).
setResultTransformer(Transformers.aliasToBean(RoleHejian.class)).list();
createQuery(hql.toString()).setResultTransformer(Transformers.aliasToBean(RoleHejian.class)).list();