public string appid = ConfigurationManager.AppSettings["aliAppId"];//应用2.0签约2017120190774565
#endregion
/// <summary>
/// .NET服务端SDK生成APP支付订单信息示例
/// </summary>
///
//.NET服务端SDK生成APP支付订单信息示例(https://docs.open.alipay.com/54/106370/)根据文档上的说法，这样就行了。
/// <summary>
/// 这个行了
/// </summary>
/// <param name="totalAmount"></param>
/// <param name="outTradeNo"></param>
/// <param name="notifyUrl"></param>
/// <returns></returns>
public string CreateAlipayOrder(string totalAmount, string outTradeNo, string notifyUrl)
{
IAopClient client = new DefaultAopClient(gateway, appid, app_private_key, "json", "1.0", "RSA2", alipay_public_key, charset, false);
//实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称如：alipay.trade.app.pay
AlipayTradeAppPayRequest request = new AlipayTradeAppPayRequest();
//SDK已经封装掉了公共参数，这里只需要传入业务参数。以下方法为sdk的model入参方式(model和biz_content同时存在的情况下取biz_content)。
request.SetApiVersion("1.0");
AlipayTradeAppPayModel model = new AlipayTradeAppPayModel();
model.Body = "body";
model.Subject = "App支付";
model.TotalAmount = totalAmount;
model.ProductCode = "QUICK_MSECURITY_PAY";
//订单号
model.OutTradeNo = outTradeNo;
model.TimeoutExpress = "30m";
request.SetBizModel(model);
request.SetNotifyUrl(notifyUrl);
//这里和普通的接口调用不同，使用的是sdkExecute
AlipayTradeAppPayResponse response = client.SdkExecute(request);
//HttpUtility.HtmlEncode是为了输出到页面时防止被浏览器将关键参数html转义，实际打印到日志以及http传输不会有这个问题
var a = response.Body;
return(response.Body);
//return HttpUtility.HtmlEncode(response.Body).Replace("&","&");
//Response.Write(HttpUtility.HtmlEncode(response.Body));
//页面输出的response.Body就是orderString 可以直接给客户端请求，无需再做处理。
}
