public async Task <(bool, GetH5PaymentBeforeResponseDto)> GetH5PaymentBeforeAsync(GetH5PaymentBeforeResquestDto requstDto) { //微信下单 //随机字符串参数 string nonceStr = WeChatUtils.GetRandomString(16, false, true, true, false, string.Empty); var unifiedOrderRequestDto = new UnifiedOrderRequestDto { AppId = PlatformSettings.CDClientAppId, MerchantId = requstDto.MerchantId, Body = requstDto.Body, OutTradeNo = requstDto.OutTradeNo, TotalFee = requstDto.TotalFee, //支付金额,单位分 NotifyUrl = requstDto.NotifyUrl, //支付通知回调 OpenId = requstDto.OpenId, MerchantSecret = requstDto.MerchantSecret, NonceStr = nonceStr }; var unifiedRes = await UnifiedOrderAsync(unifiedOrderRequestDto); if (!unifiedRes.IsReturnCodeSuccess() || !unifiedRes.IsResultCodeSuccess()) { var errMsg = new StringBuilder(); errMsg.Append($"微信支付下单失败:return_msg-{unifiedRes.return_msg}|err_code-{unifiedRes.err_code}|err_code_des-{unifiedRes.err_code_des}"); errMsg.Append($"{Environment.NewLine}at SenparcPayBiz.GetH5PaymentBeforeAsync({JsonConvert.SerializeObject(requstDto)})"); Logger.Error(errMsg.ToString()); return(false, null); } var result = new GetH5PaymentBeforeResponseDto { AppId = unifiedOrderRequestDto.AppId, TimeStamp = WeChatUtils.GetTimestamp(), NonceStr = unifiedOrderRequestDto.NonceStr, Package = $"prepay_id={unifiedRes.prepay_id}", SignType = "MD5" }; result.Sign = TenPayV3.GetJsPaySign( unifiedOrderRequestDto.AppId, result.TimeStamp, result.NonceStr, result.Package, unifiedOrderRequestDto.MerchantSecret, "MD5"); return(true, result); }