/// <summary>
/// 统一下单功能，支持除付款码支付场景以外的预支付交易单生成。
/// </summary>
public async Task <XmlDocument> UnifiedOrderAsync(string appId, string mchId, string body, string orderNo, int totalFee,
string tradeType,
string openId = null)
{
var request = new WeChatPayParameters();
request.AddParameter("appid", appId);
request.AddParameter("mch_id", mchId);
request.AddParameter("nonce_str", RandomHelper.GetRandom());
request.AddParameter("body", body);
request.AddParameter("out_trade_no", orderNo);
request.AddParameter("total_fee", totalFee);
request.AddParameter("spbill_create_ip", "127.0.0.1");
request.AddParameter("notify_url", _abpWeChatPayOptions.NotifyUrl);
request.AddParameter("openid", openId);
request.AddParameter("trade_type", tradeType);
var signStr = SignatureGenerator.Generate(request, MD5.Create(), _abpWeChatPayOptions.ApiKey);
request.AddParameter("sign", signStr);
var result = await WeChatPayApiRequester.RequestAsync(TargetUrl, request.ToXmlStr());
if (result.SelectSingleNode("/xml/err_code") != null ||
result.SelectSingleNode("/xml/return_code")?.InnerText != "SUCCESS" ||
result.SelectSingleNode("/xml/return_msg")?.InnerText != "OK")
{
throw new UserFriendlyException($"调用微信支付接口失败。");
}
return(result);
}
protected virtual async Task <XmlDocument> RequestAndGetReturnValueAsync(string targetUrl, WeChatPayParameters requestParameters)
{
var result = await WeChatPayApiRequester.RequestAsync(targetUrl, requestParameters.ToXmlStr());
if (result.SelectSingleNode("/xml/err_code") != null ||
result.SelectSingleNode("/xml/return_code")?.InnerText != "SUCCESS" ||
result.SelectSingleNode("/xml/return_msg")?.InnerText != "OK")
{
throw new UserFriendlyException($"调用微信支付接口失败，具体失败原因：{result.SelectSingleNode("/xml/err_code_des")?.InnerText}");
}
return(result);
}
protected virtual async Task <XmlDocument> RequestAndGetReturnValueAsync(string targetUrl, WeChatPayParameters requestParameters)
{
var result = await WeChatPayApiRequester.RequestAsync(targetUrl, requestParameters.ToXmlStr());
if (result.SelectSingleNode("/xml/return_code")?.InnerText != "SUCCESS" ||
result.SelectSingleNode("/xml/return_msg")?.InnerText != "OK")
{
var errMsg = $"微信支付接口调用失败，具体失败原因：{result.SelectSingleNode("/xml/err_code_des")?.InnerText ?? result.SelectSingleNode("/xml/return_msg")?.InnerText}";
Logger.Log(LogLevel.Error, errMsg, targetUrl, requestParameters);
var exception = new CallWeChatPayApiException(errMsg);
exception.Data.Add(nameof(targetUrl), targetUrl);
exception.Data.Add(nameof(requestParameters), requestParameters);
throw exception;
}
return(result);
}