@Override
  public ProductVO get(ProductParam param) {
    List<ProductVO> vos = getList(param);
    if (!CollectionUtils.isEmpty(vos)) {
      ProductVO product = vos.get(0);

      // 描述
      List<ProductDescriptionModel> desModel =
          productDescriptionDao.getByProductId(product.getId());
      if (!CollectionUtils.isEmpty(desModel)) {
        product.setDescription(desModel.get(0).getDescription());
        product.setDescriptionId(desModel.get(0).getId());
      }
      return product;
    }
    return null;
  }