.net接入支付宝的支付接口


            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 = "http://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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