获取单据号

ZlRentVO zlRentVO = new ZlRentVO();
String billtype = zlRentVO.getPk_billtype();
billtype = getUIController().getBillType();
String pk_corp =ClientEnvironment.getInstance().getCorporation().getUnitcode();
pk_corp = _getCorp().getPrimaryKey();
//取得单据号(从NC取,服务器端)
String billNo = new nc.bs.trade.business.HYPubBO().getBillNo(billtype, pk_corp, null, null);
//取得单据号(从NC取,客户端)
HYPubBO_Client.getBillNo(billtype, pk_corp, null, null);