字符串分割转数组，转list，添加list

private void getSeatRegionInfo(RopLocalplayOrderResponse response,OrderBaseVo vstOrder){
        if(vstOrder.getShowTicketBaseInfoVo().getOnlineSelection()!=null){
            if("Y".equals(vstOrder.getShowTicketBaseInfoVo().getOnlineSelection())){
                List itemList = vstOrder.getOrderItemList();
                List seatRegionInfo = new ArrayList<>();
                if(vstOrder.getOrderItemList()!=null){
                    for(OrderItemBaseVo list:itemList){
                        String seats = list.getShowTicketSeats();
                        String[] arrStr = seats.split(","); //字符串分割转数组
                        seatRegionInfo.addAll(Arrays.asList(arrStr)); //Arrays.asList把数组转list，addAll 方法把list 添加到另一个 list 
                    }
                }
                response.setOnlineSelection("Y");
                response.setShowTicketSeatsRegionInfo(seatRegionInfo);
            }else{
                response.setOnlineSelection("N");
            }
        } else {
            logger.error("主站未能返回是否支持在线选座字段");
        }
    }

字符串分割转数组——>数组转 list ——>把 list 添加到另一个 list（list.addAll 方法）