批量保存，批量插入数据
/*** 批量保存*/public boolean save(List<T> list) {Session session = HibernateUtils.getSession();Transaction transaction = session.beginTransaction();try {for (int i = 0; i < list.size(); i++) {session.save(list.get(i));if (i % 2000 == 0 || i == list.size() - 1) {session.flush();transaction.commit();}}} catch (HibernateException e) {e.printStackTrace();transaction.rollback();return false;} finally {HibernateUtils.closeSession(session);}return true;}