public List<DpCampaignStats> selectByDate(Date start, Date end){
    SqlSession session = sqlSessionFactory.openSession();
    try {       
        List<DpCampaignStats> list = session.selectList("DpCampaignStats.selectByDate", start,end);
        return list;
    } finally {
        session.close();
    }

}

from:http://www.yihaomen.com/article/java/426.htm