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 SortedDictionarystring, string>
 GetRequestPost()    {
          int i = 0;
          SortedDictionarystring, string>
     sArray = new SortedDictionarystring, 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(SortedDictionarystring, string>
 inputPara)    {
          Dictionarystring, string>
     sPara = new Dictionarystring, string>
    ();
              Boolean verifyResult = AlipaySignature.RSACheckV1(inputPara, alipay_public_key, charset,sign_type,false);
          return verifyResult;
    }
    

异步请求：

 [HttpPost]    public void AsyncPay()    {
          SortedDictionarystring, 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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