[url]
http://biancheng.dnbcw.info/java/71552.html[/url]
@SuppressWarnings("unchecked") public DeviceInfo getDIByImei(String imei){ ArrayList<DeviceInfo> list = (ArrayList<DeviceInfo>) s.createQuery("from DeviceInfo where imei = '"+imei+"'").list(); DeviceInfo result = null; if (list.size()>0) { result = list.get(0); } return result; } public void saveOrUpdate(DeviceInfo di){ DeviceInfo getDi = getDIByImei(di.getImei()); if(getDi==null){ DaoFactory.getDiDao().save(di); } }