/**
     * 導(dǎo)出二維碼
     *
     */
    @RequestMapping(value = "/exportQrcode")
    public void exportQrcode(HttpServletRequest request, HttpServletResponse response, ProQrcode proQrcode) throws IOException {
        // Step.1 組裝查詢條件
        // ... 此處省略數(shù)據(jù)查詢條件...
  // 查詢數(shù)據(jù)
        List<ProQrcode> list = service.list(queryWrapper);
        int width = 800;
        if (StringUtils.isNotBlank(widthStr)) {
            width = Integer.parseInt(widthStr);
        }
        byte[] data = genQrcodeImg(list, width);
        zip(response, data);
    }
    /**
     * 批量生產(chǎn)圖片zip壓縮包數(shù)據(jù)
     * */
    private byte[] genQrcodeImg(List<ProQrcode> list, int width) {
        try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
             ZipOutputStream zip = new ZipOutputStream(outputStream)) {

            for (int i = 0; i < list.size(); i++) {
                ProQrcode qrcode = list.get(i);
                try {
                    // 添加到zip，設(shè)置文件名，后綴.png
                    zip.putNextEntry(new ZipEntry(String.format("%d.%s.png", i + 1, qrcode.getCode())));
                    // 查詢是否配置了logo，如果有l(wèi)ogo，則把logo添加到二維碼中
                    BufferedImage logo = CustomerBrandCache.getLogo(qrcode.getCustomerBrandId());
                    QrConfig config = new QrConfig();
                    config.setWidth(width).setHeight(width);
                    if (logo != null) {
                        config.setImg(logo);
                    }
                    // 生成二維碼圖片
                    byte[] bytes = QrCodeUtil.generatePng(qrcode.getLinkUrl(), config);
                    // 將byte[]寫入到壓縮包中
                    IOUtils.write(bytes, zip);
                    zip.flush();
                    zip.closeEntry();
                } catch (IOException e) {
                    log.error("addQrcode，error：", e);
                }
            }
            return outputStream.toByteArray();
        } catch (Exception e) {
            log.error("", e);
        }
        return new byte[0];
    }

    /**
     * 生成zip文件，設(shè)置響應(yīng)頭為文件下載
     */
    private void zip(HttpServletResponse response, byte[] data) throws IOException {
        response.reset();
        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Expose-Headers", "Content-Disposition");
        response.setHeader("Content-Disposition", "attachment; filename=\"qrcode.zip\"");
        response.addHeader("Content-Length", "" + data.length);
        response.setContentType("application/octet-stream; charset=UTF-8");
        IOUtils.write(data, response.getOutputStream());
    }

/**
 * 導(dǎo)出二維碼數(shù)據(jù)
 */
export const exportQrcode = async (name, params) => {
  const data = await defHttp.get({ url: Api.exportQrcode, params, responseType: 'blob', timeout: 30000 }, { isTransformResponse: false })
  if (!data) {
    createMessage.warning('文件下載失敗')
    return
  }
  if (!name || typeof name != 'string') {
    name = '導(dǎo)出文件'
  }
  const blobOptions = { type: 'application/octet-stream' }
  const fileSuffix = '.zip'
  debugger
  if (typeof window.navigator.msSaveBlob !== 'undefined') {
    window.navigator.msSaveBlob(new Blob([data], blobOptions), name + fileSuffix)
  } else {
    const url = window.URL.createObjectURL(new Blob([data], blobOptions))
    const link = document.createElement('a')
    link.style.display = 'none'
    link.href = url
    link.setAttribute('download', name + fileSuffix)
    document.body.appendChild(link)
    link.click()
    document.body.removeChild(link) //下載完成移除元素
    window.URL.revokeObjectURL(url) //釋放掉blob對象
  }
}