@RequestMapping("addSeller")
  @ResponseBody
  public Object addSeller(
      HttpServletRequest request, HttpServletResponse response, @RequestParam String sellerName)
      throws SQLException, IOException {

    Seller seller = new Seller();
    seller.sellerName = sellerName.trim();
    Map<String, Seller> sellerNameMap = sellerConstant.getSellerNameMap();
    if (sellerNameMap.get(sellerName.trim()) != null) {
      return buildJson(1, "供应商名字重复");
    }

    try {
      sellerService.addSeller(seller);
      sellerConstant.refresh();
      return buildJson(0, "添加商家成功");
    } catch (Exception e) {
      e.printStackTrace();
      LogConstant.mallLog.error(
          "code:{},msg:{},params:{}", 1, "添加供应商失败", "&sellerName:" + sellerName);
      return buildJson(1, "添加供应商失败");
    }
  }