支付宝支付功能开发

一.准备工作

1.沙箱应用：https://openhome.alipay.com/platform/appDaily.htm

2.签名专区：https://docs.open.alipay.com/291/105971/

3.DEMO下载：https://docs.open.alipay.com/270/106291/

4.商家中心：https://b.alipay.com/signing/authorizedProductSet.htm?navKey=all#/?_k=53rjub

5.电脑网站支付开发文档：https://docs.open.alipay.com/270/alipay.trade.page.pay

6.开发指南：https://docs.open.alipay.com/200/105310/

二.编写代码

1.发起PC支付

            OrderPaymentTB orderPayment = this.BaseService.GetModel<OrderPaymentTB>(u => u.OrderPaymentNo == tradeNo);
            string app_id = CachedConfigContext.Current.AlipayConfig.app_id;
            string subject = CachedConfigContext.Current.AlipayConfig.subject;
            string merchant_private_key = CachedConfigContext.Current.AlipayConfig.private_key;
            string alipay_public_key = CachedConfigContext.Current.AlipayConfig.alipay_public_key;
            string server_url = CachedConfigContext.Current.AlipayConfig.server_url;//正式环境 https://openapi.alipay.com/gateway.do
            string format = CachedConfigContext.Current.AlipayConfig.format;
            string version = CachedConfigContext.Current.AlipayConfig.version;
            string sign_type = CachedConfigContext.Current.AlipayConfig.sign_type;
            string input_charset = CachedConfigContext.Current.AlipayConfig.input_charset;
            DefaultAopClient client = new DefaultAopClient(server_url, app_id, merchant_private_key, format, version, sign_type, alipay_public_key, input_charset, false);
            AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();
            request.BizContent = "{" +
            "    "body":""," +
            "    "subject":"" + subject + ""," +
            "    "out_trade_no":"" + orderPayment.OrderPaymentNo + ""," +
            "    "total_amount":" + orderPayment .Amount+ "," +
            "    "product_code":"FAST_INSTANT_TRADE_PAY"" +
            "  }";
            request.SetReturnUrl(CachedConfigContext.Current.AlipayConfig.return_url);
            request.SetNotifyUrl(CachedConfigContext.Current.AlipayConfig.notify_url);
            AlipayTradePagePayResponse response = client.pageExecute(request);
            string form = response.Body;
            return View();

2.支付回调

using Qxun.Framework.Utility;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.Mvc;

using System.Xml.Serialization;
using System.Collections.Specialized;


using System.Transactions;

using System.Collections;
using Qxun.Framework.Web;
using Qxun.Framework.Contract;
using Qxun.Framework.Weixin.NativePay;
using Aop.Api.Util;
using Qxun.Core.Config;
namespace QianxunApplication.Areas.Admin.Controllers
{
    public class AlipayController : Controller
    {
        //
        // GET: /Admin/Alipay/

        public ActionResult Callback()
        {
            LogHelper.Error("PC端支付宝支付回调");
            SortedDictionary<string, string> sPara = GetRequestPost();
            Response.Write("success");
            if (sPara.Count > 0)//判断是否有带返回参数
            {
                bool verifyResult = AlipaySignature.RSACheckV1(sPara, CachedConfigContext.Current.AlipayConfig.alipay_public_key, CachedConfigContext.Current.AlipayConfig.input_charset, CachedConfigContext.Current.AlipayConfig.sign_type, false);

                if (verifyResult)//验证成功
                {
                    LogHelper.Error("签名验证成功");
                    /////////////////////////////////////////////////////////////////////////////////////////////////////////////
                    //请在这里加上商户的业务逻辑程序代码


                    //——请根据您的业务逻辑来编写程序（以下代码仅作参考）——
                    //获取支付宝的通知返回参数，可参考技术文档中服务器异步通知参数列表

                    //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"];

                    //交易状态
                    string trade_status = Request.Form["trade_status"];

                    LogHelper.Error("交易状态：" + trade_status);
                    if (Request.Form["trade_status"] == "TRADE_FINISHED")
                    {
                        //判断该笔订单是否在商户网站中已经做过处理
                        //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                        //请务必判断请求时的total_fee、seller_id与通知时获取的total_fee、seller_id为一致的
                        //如果有做过处理，不执行商户的业务程序

                        //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
                        Response.Write("success");  //请不要修改或删除
                    }
                    else if (Request.Form["trade_status"] == "TRADE_SUCCESS")
                    {
                        //判断该笔订单是否在商户网站中已经做过处理
                        //如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                        //请务必判断请求时的total_fee、seller_id与通知时获取的total_fee、seller_id为一致的
                        //如果有做过处理，不执行商户的业务程序

                        //注意：
                        //付款完成后，支付宝系统发送该交易状态通知
                        var model = ServiceContext.Current.BaseService.GetModel<OrderPaymentTB>(u => u.OrderPaymentNo == out_trade_no);
                        if (model != null)
                        {
                            try
                            {
                                model.TradeOrderNo = trade_no;
                                model.Remark = "alipay success;time=" + DateTime.Now.ToString();
                                ServiceContext.Current.TradeService.FinishOrderPayment(model);
                                Response.Write("success");  //请不要修改或删除
                            }
                            catch (Exception e)
                            {
                                LogHelper.Error(string.Format("支付宝支付回调，本地数据库查询不到该订单号{0}所对应的订单", out_trade_no));
                                Response.Write("success");  //请不要修改或删除
                            }

                        }
                        else
                        {
                            LogHelper.Error(string.Format("支付宝支付回调，本地数据库查询不到该订单号{0}所对应的订单", out_trade_no));
                            Response.Write("fail");
                        }
                    }
                    else
                    {
                        Response.Write("fail");
                    }

                    //——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

                    /////////////////////////////////////////////////////////////////////////////////////////////////////////////
                }
                else//验证失败
                {
                    LogHelper.Error("签名验证失败");
                    Response.Write("fail");
                }
            }
            else
            {
                Response.Write("无通知参数");
            }
           
            return View();
        }

        public static void PrintKeysAndValues(NameValueCollection myCol)
        {
            IEnumerator myEnumerator = myCol.GetEnumerator();
            Console.WriteLine("   KEY        VALUE");
            foreach (String s in myCol.AllKeys)
            {
                LogHelper.Error(string.Format("{0}: {1}", s, myCol[s]));
            }
  
        }   


        /// <summary>
        /// 获取支付宝POST过来通知消息，并以“参数名=参数值”的形式组成数组
        /// </summary>
        /// <returns>request回来的信息组成的数组</returns>
        public 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++)
            {
                LogHelper.Error(string.Format("{0}: {1}", requestItem[i], Request.Form[requestItem[i]]));
                sArray.Add(requestItem[i], Request.Form[requestItem[i]]);
            }

            return sArray;
        }

       
    }


}