public async Task<ActionResult> WePayAsync(WePayReqParam payInfo)
 {
     using (var client = new HttpClient())
     {
         client.BaseAddress = new Uri("http://localhost:8115/");
         client.DefaultRequestHeaders.Accept.Clear();
         client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
         // HTTP POST
         var gizmo = new WePayReqParam { OrderNo = payInfo.OrderNo, ProductName = payInfo.ProductName, CustomerIp="127.0.0.1", TotalFee = payInfo.TotalFee, TradeType = EnumWePayTradeType.NATIVE};
         var response = await client.PostAsJsonAsync("api/Payment/CreateWePayRequestParam", gizmo);
         var resultValue = await response.Content.ReadAsAsync<BizResult<string>>();
         if (resultValue.Code == EnumBizCode.Failed)
         {
             throw new Exception("微信支付失败");
         }
         ViewBag.OrderId = payInfo.OrderNo;
         ViewBag.PayAmount = payInfo.TotalFee;
         ViewBag.PayUrl = resultValue.ReturnObject;
         return View("WePay");
     }
 }
 public BizResult<string> CreateWePayRequestParam(WePayReqParam payInfo)
 {
     BizResult<string> biz = new BizResult<string>();
     biz.ReturnObject = this._wePay.BuildWePay(payInfo.OrderNo,payInfo.ProductName,payInfo.TotalFee,payInfo.CustomerIp,payInfo.TradeType); ;
     return biz;
 }