java指定由若干url生成二维码png,然后打包为zip下载

额,又应项目要求,需要将客户配置的url生成二维码,然后打包为zip下载
上一篇是根据url生成图片打包下载，此篇仅仅多个根据url生成二维码
我沉默，话不多，赢的时候才开口.上代码

//公共方法根据url生成二维码图片后写入输出流里    public static void getBarCodeImgByUrl(String url,OutputStream os) throws WriterException,IOException{        //二维码参数        int width = 200; // 图像宽度          int height = 200; // 图像高度          String format = "png";// 图像类型          Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();          hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");          BitMatrix bitMatrix;        bitMatrix = new MultiFormatWriter().encode(url,BarcodeFormat.QR_CODE, width, height, hints);        MatrixToImageWriter.writeToStream(bitMatrix, format, os);    }//入口@RequestMapping("download")    public void download(HttpServletRequest request, HttpServletResponse response,BcMerchantAccount userInfo,String identy){            //通过活动标识和商户id查询活动            List<info> infoList = xxService.getInfoList(XX,XX);            if(infoList != null && infoList.size()>0){                ZipOutputStream zos = null;                try {                    String downloadFilename = infoList.get(0).getfileName();//文件的名称                    downloadFilename = URLEncoder.encode(downloadFilename, "UTF-8");//转换中文否则可能会产生乱码                    response.setContentType("application/octet-stream");// 指明response的返回对象是文件流                     response.setHeader("Content-Disposition", "attachment;filename=" + downloadFilename+".zip");// 设置在下载框默认显示的文件名                    zos = new ZipOutputStream(response.getOutputStream());                    for(info info:infoList ){                        zos.putNextEntry(new ZipEntry(info.getBarCode_name()+".png"));//命名                        getBarCodeImgByUrl(info.getUrl, zos);//拼接了url                    }                    zos.flush();                         zos.close();                } catch (UnsupportedEncodingException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                } catch (WriterException e) {                    e.printStackTrace();                } finally{                    if(zos != null){                        try {                            zos.flush();                            zos.close();                        } catch (IOException e) {                            e.printStackTrace();                        }                         }                }            }    }