支付宝的支付接口在.net中的使用

H5手机网站接入支付宝的支付接口，推荐使用支付宝提供的SDK来快速开发

我使用的是SDK开发

引用命名空间

using Aop.Api;  using Aop.Api.Request;  using Aop.Api.Response;  using Aop.Api.Util;

首页需要定义一些常量

 static string serverUrl = "https://openapi.alipaydev.com/gateway.do";      static string app_id = "**";  //开发者的应用ID      static string format = "JSON";      static string charset = "utf-8";      static string sign_type = "RSA2"; //签名格式      static string version = "1.0";      string UID = "2088102169707816";//卖家支付宝账户号      //商户私钥      static string merchant_private_key = "***";      //支付宝公钥      static string alipay_public_key = "***";

这里的app_id,merchant_private_key,alipay_public_key 我就没有列出来了，获取的方法需要自己去支付宝平台完成一些操作进行获取

在用户点击网站付款时，我们需要唤醒支付宝，来进行支付

public string H5RequestPayWay(OrderPO order)      {        IAopClient client = new DefaultAopClient(serverUrl, app_id, merchant_private_key, format, version, sign_type, alipay_public_key, charset, false);        AlipayTradeWapPayRequest request = new AlipayTradeWapPayRequest();        string address= "http://m." + PathLogic1.RootDomain;        request.SetReturnUrl(address+ "/WebPay/AlipayPayResult");//同步请求        request.SetNotifyUrl(address + "/WebPay/AsyncPay");//异步请求        var lstDetail = Context.Data.OrderDetail.Where(x => x.OrderNo == order.OrderNo).ToSelectList(x=>new { x.SkuName});        StringBuilder sb = new StringBuilder();        for (int i = 0; i < lstDetail.Count(); i++)        {          sb.Append(lstDetail[i].SkuName + ",");        }        request.BizContent = "{" +    "\"body\":\""+sb.ToString().Substring(0,sb.Length-1)+"\"," +    "\"subject\":\"袋鼠巴巴商品支付\"," +    "\"out_trade_no\":\""+order.OrderNo+"\"," +    "\"timeout_express\":\"90m\"," +    "\"total_amount\":"+(order.TotalAmount.Value+order.TotalFreight.Value)+"," +    "\"product_code\":\"QUICK_WAP_PAY\"" +    " }";          AlipayTradeWapPayResponse response = client.pageExecute(request);         return response.Body;      }

具体发送给支付宝的参数，自行去查看

执行方法后，买家输入自己的支付宝账号密码进行支付，支付成功的结果，支付宝会以post的方式异步请求你的SetNotifyUrl的地址

这个SetNotifyUrl的地址必须要外网可以访问，支付宝的请求才能进来

买家支付成功，商家修改订单状态和数据库的操作，都在异步请求中执行

同步请求

public ActionResult AlipayPayResult()      {        ViewBag.result = "success";        return View("PayResult");      }

     /// <summary>      /// 验证通知数据的正确性      /// </summary>      /// <param name="out_trade_no"></param>      /// <param name="total_amount"></param>      /// <param name="seller_id"></param>      /// <returns></returns>   private SortedDictionary<string, string> GetRequestPost()      {        int i = 0;        SortedDictionary<string, string> sArray = new SortedDictionary<string, string>();        NameValueCollection coll;        //Load Form variables into NameValueCollection variable.        coll = Request.Form;          // Get names of all forms into a string array.        String[] requestItem = coll.AllKeys;          for (i = 0; i < requestItem.Length; i++)        {          sArray.Add(requestItem[i], Request.Form[requestItem[i]]);        }          return sArray;      }

 /// <summary>      /// 验签      /// </summary>      /// <param name="inputPara"></param>      /// <returns></returns>      public Boolean Verify(SortedDictionary<string, string> inputPara)      {        Dictionary<string, string> sPara = new Dictionary<string, string>();            Boolean verifyResult = AlipaySignature.RSACheckV1(inputPara, alipay_public_key, charset,sign_type,false);        return verifyResult;      }

异步请求：

 [HttpPost]      public void AsyncPay()      {        SortedDictionary<string, string> sPara = GetRequestPost();//将post请求过来的参数传化为SortedDictionary        if (sPara.Count > 0)        {          AlipayTradeWayPayServer pay = new AlipayTradeWayPayServer();          Boolean VerifyResult = pay.Verify(sPara);//验签if (VerifyResult)          {            try            {               //商户订单号              string out_trade_no = Request.Form["out_trade_no"];              //支付宝交易号              string trade_no = Request.Form["trade_no"];              //支付金额              decimal total_amount = Request.Form["total_amount"].ConvertType(Decimal.Zero);              //实收金额              //decimal receipt_amount = Request.Form["receipt_amount"].ConvertType(Decimal.Zero);              //交易状态              string trade_status = Request.Form["trade_status"];              //卖家支付宝账号              string seller_id = Request.Form["seller_id"];                //商品描述              string body = Request.Form["body"];              //交易创建时间              DateTime gmt_create = DateTime.Parse(Request.Form["gmt_create"]);              //交易付款时间              DateTime gmt_payment = DateTime.Parse(Request.Form["gmt_payment"]);              string appid = Request.Form["app_id"];              WriteError("验证参数开始");              Boolean DataValidity = pay.CheckInform(out_trade_no, total_amount, seller_id, appid);//商家判断参数时候是否匹配if (DataValidity)              {                if (Request.Form["trade_status"] == "TRADE_FINISHED")                {                  AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);                  pay.PaySuccess(out_trade_no, model, Server.MapPath("~/" + DateTime.Today.ToString("yyMMdd") + ".txt"));//修改订单                  //注意：                  //退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知                }                else if (Request.Form["trade_status"] == "TRADE_SUCCESS")                {                  AlipayWayPayPO model = CreateAlipayWayPay(out_trade_no, trade_no, trade_status, gmt_create, gmt_payment);                  pay.PaySuccess(out_trade_no, model, Server.MapPath("~/" + DateTime.Today.ToString("yyMMdd") + ".txt"));//修改订单                  //注意：                  //付款完成后，支付宝系统发送该交易状态通知                }                else                {                  }                  //——请根据您的业务逻辑来编写程序（以上代码仅作参考）——                  Response.Write("success"); //请不要修改或删除                  /////////////////////////////////////////////////////////////////////////////////////////////////////////////              }            }            catch (Exception ex)            {                          }          }          else//验证失败          {            Response.Write("fail");          }        }        else        {          Response.Write("无通知参数");        }      }

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