完整版本支付寶掃碼支付 c#版本

支付寶工具類

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Web;

namespace ZK_ECommerce.Shop.pay.alipay
{
    public class AliPay
    {

        public static string GetMD5(string s, string _input_charset)
        {

            /// <summary>
            /// 與ASP兼容的MD5加密算法
            /// </summary>

            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] t = md5.ComputeHash(Encoding.GetEncoding(_input_charset).GetBytes(s));
            StringBuilder sb = new StringBuilder(32);
            for (int i = 0; i < t.Length; i++)
            {
                sb.Append(t[i].ToString("x").PadLeft(2, '0'));
            }
            return sb.ToString();
        }

        public static string[] BubbleSort(string[] r)
        {
            /// <summary>
            /// 冒泡排序法
            /// </summary>

            int i, j; //交換標誌 
            string temp;

            bool exchange;

            for (i = 0; i < r.Length; i++) //最多做R.Length-1趟排序 
            {
                exchange = false; //本趟排序開始前，交換標誌應爲假

                for (j = r.Length - 2; j >= i; j--)
                {
                    if (System.String.CompareOrdinal(r[j + 1], r[j]) < 0)　//交換條件
                    {
                        temp = r[j + 1];
                        r[j + 1] = r[j];
                        r[j] = temp;

                        exchange = true; //發生了交換，故將交換標誌置爲真 
                    }
                }

                if (!exchange) //本趟排序未發生交換，提前終止算法 
                {
                    break;
                }

            }
            return r;
        }

        public string CreatUrl(
            string gateway,
            string service,
            string partner,
            string sign_type,
            string out_trade_no,
            string subject,
            string body,
            string payment_type,
            string total_fee,
            string show_url,
            string seller_email,
            string key,
            string return_url,
            string _input_charset,
            string notify_url,
            string extra_common_param = ""
            )
        {
            return CreatUrl(
            gateway,
            service,
            partner,
            sign_type,
           out_trade_no,
            subject,
            body,
            payment_type,
           total_fee,
           show_url,
           seller_email,
           key,
           return_url,
           _input_charset,
           notify_url,
           "",
           extra_common_param);
        }



        public string CreatUrl(
            string gateway,
            string service,
            string partner,
            string sign_type,
            string out_trade_no,
            string subject,
            string body,
            string payment_type,
            string total_fee,
            string show_url,
            string seller_email,
            string key,
            string return_url,
            string _input_charset,
            string notify_url,
            string token,
            string extra_common_param = ""
            )
        {
            /// <summary>
            ///2015年11月17日14:08:00
            /// </summary>
            int i;
            string[] Oristr;
            //構造數組；
            if (!string.IsNullOrEmpty(token))
            {
                if (extra_common_param == "COD2MOTOPAY")
                {
                    Oristr = new[]{ 
                    "service="+service, 
                    "partner=" + partner, 
                    "subject=" + subject, 
                    "body=" + body, 
                    "out_trade_no=" + out_trade_no, 
                    "total_fee=" + total_fee, 
                    "show_url=" + show_url,  
                    "payment_type=" + payment_type, 
                    "seller_email=" + seller_email, 
                    "notify_url=" + notify_url,
                    "_input_charset="+_input_charset,          
                    "return_url=" + return_url,
                    "token="+token,
                    "extra_common_param="+extra_common_param
                    };
                }
                else
                {
                    Oristr = new[]{ 
                    "service="+service, 
                    "partner=" + partner, 
                    "subject=" + subject, 
                    "body=" + body, 
                    "out_trade_no=" + out_trade_no, 
                    "total_fee=" +total_fee, 
                    "show_url=" + show_url,  
                    "payment_type=" + payment_type, 
                    "seller_email=" + seller_email, 
                    "notify_url=" + notify_url,
                    "_input_charset="+_input_charset,          
                    "return_url=" + return_url,
                    "token="+token
                    };
                }

            }
            else
            {
                if (extra_common_param == "COD2MOTOPAY")
                {
                    Oristr = new[]{ 
                    "service="+service, 
                    "partner=" + partner, 
                    "subject=" + subject, 
                    "body=" + body, 
                    "out_trade_no=" + out_trade_no, 
                    "total_fee="+total_fee, 
                    "show_url=" + show_url,  
                    "payment_type=" + payment_type, 
                    "seller_email=" + seller_email, 
                    "notify_url=" + notify_url,
                    "_input_charset="+_input_charset,          
                    "return_url=" + return_url,
                    "extra_common_param="+extra_common_param
                    };
                }
                else
                {
                    Oristr = new[]{ 
                    "service="+service, 
                    "partner=" + partner, 
                    "subject=" + subject, 
                    "body=" + body, 
                    "out_trade_no=" + out_trade_no, 
                    "total_fee=" + total_fee, 
                    "show_url=" + show_url,  
                    "payment_type=" + payment_type, 
                    "seller_email=" + seller_email, 
                    "notify_url=" + notify_url,
                    "_input_charset="+_input_charset,          
                    "return_url=" + return_url
                    };
                }


            }
            //進行排序；
            string[] Sortedstr = BubbleSort(Oristr);


            //構造待md5摘要字符串 ；

            StringBuilder prestr = new StringBuilder();

            for (i = 0; i < Sortedstr.Length; i++)
            {
                if (i == Sortedstr.Length - 1)
                {
                    prestr.Append(Sortedstr[i]);

                }
                else
                {

                    prestr.Append(Sortedstr[i] + "&");
                }

            }

            prestr.Append(key);

            //生成Md5摘要；
            string sign = GetMD5(prestr.ToString(), _input_charset);

            //構造支付Url；
            char[] delimiterChars = { '=' };
            StringBuilder parameter = new StringBuilder();
            parameter.Append(gateway);
            for (i = 0; i < Sortedstr.Length; i++)
            {

                parameter.Append(Sortedstr[i].Split(delimiterChars)[0] + "=" + HttpUtility.UrlEncode(Sortedstr[i].Split(delimiterChars)[1]) + "&");
            }

            parameter.Append("sign=" + sign + "&sign_type=" + sign_type);


            //返回支付Url；
            return parameter.ToString();

        }

        public string CreatUrl_MissPayments(
                                string gateway,
                                string service,
                                string partner,
                                string sign_type,
                                string out_trade_no,
                                string key,
                                string _input_charset

         )
        {
            /// <summary>
            /// created by sunzhizhi 2006.5.21,[email protected]。
            /// </summary>
            int i;

            //構造數組；
            string[] Oristr ={ 
                "service="+service, 
                "partner=" + partner,
                "out_trade_no=" + out_trade_no,     
                "_input_charset="+_input_charset          

                };

            //進行排序；
            string[] Sortedstr = BubbleSort(Oristr);


            //構造待md5摘要字符串 ；

            StringBuilder prestr = new StringBuilder();

            for (i = 0; i < Sortedstr.Length; i++)
            {
                if (i == Sortedstr.Length - 1)
                {
                    prestr.Append(Sortedstr[i]);

                }
                else
                {

                    prestr.Append(Sortedstr[i] + "&");
                }

            }

            prestr.Append(key);

            //生成Md5摘要；
            string sign = GetMD5(prestr.ToString(), _input_charset);

            //構造支付Url；
            char[] delimiterChars = { '=' };
            StringBuilder parameter = new StringBuilder();
            parameter.Append(gateway);
            for (i = 0; i < Sortedstr.Length; i++)
            {

                parameter.Append(Sortedstr[i].Split(delimiterChars)[0] + "=" + HttpUtility.UrlEncode(Sortedstr[i].Split(delimiterChars)[1]) + "&");
            }

            parameter.Append("sign=" + sign + "&sign_type=" + sign_type);


            //返回支付Url；
            return parameter.ToString();

        }


        public static string GetTranSign(string TranData)
        {
            if (string.IsNullOrWhiteSpace(TranData))
                return null;
            string sign = GetMD5(TranData + "alskdjfaow;fjel;asdjf", "utf-8");
            return sign;
        }

    }
}

頁面處理

using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using System.Web.Mvc;
using ZK_ECommerce.Shop.pay.alipay;

namespace Alipay.Controllers
{
    public class ApliayDemoController : Controller
    {
       /// <summary>
       /// 支付頁面
       /// </summary>
       /// <param name="ordercode"></param>
       /// <returns></returns>
        public ActionResult Index(string ordercode)
        {


            string out_trade_no = ordercode;
            string gateway = "https://mapi.alipay.com/gateway.do?";	//支付接口
            string service = "create_direct_pay_by_user";
            string partner = "";		//partner合作伙伴ID保留字段
            string sign_type = "MD5";
            string payment_type = "1";                  //支付類型	
            string show_url = "http://www.letao.com";
            string seller_email = "";             //賣家賬號
            string key = "";              //partner賬戶的支付寶安全校驗碼
            string return_url = "http://localhost:1396/ApliayDemo/ApliyReturn"; //服務器通知返回接口
            string notify_url = "http://localhost:1396/ApliayDemo/AlipayNotify"; //服務器通知返回接口
            string _input_charset = "utf-8";
            string extra_common_param = "COD2MOTOPAY";//表示快捷支付 
            string token = string.Empty;
            if (string.IsNullOrEmpty(token))
                token = "";
            string subject = "康康體檢套餐"; // subject商品名稱
            string body = "測試商品";  //商品描述   
            string total_fee = "0.01";
            AliPay ap = new AliPay();
            string aliay_url = ap.CreatUrl(gateway, service, partner, sign_type, out_trade_no, subject, body, payment_type,
                                           total_fee, show_url, seller_email, key, return_url, _input_charset, notify_url, token, extra_common_param);

            return Redirect(aliay_url);


        }


        /// <summary>
        /// 返回通知頁面
        /// </summary>
        /// <returns></returns>
        public ActionResult ApliyReturn()
        {

            string alipayNotifyURL = "https://mapi.alipay.com/gateway.do?";
            string key = ""; //partner 的對應交易安全校驗碼（必須填寫）
            string _input_charset = "utf-8";
            string partner = ""; 		//partner合作伙伴id（必須填寫）

            alipayNotifyURL = alipayNotifyURL + "service=notify_verify" + "&partner=" + partner + "¬ify_id=" + Request.QueryString["notify_id"];

            //獲取支付寶ATN返回結果，true是正確的訂單信息，false 是無效的
            string responseTxt = Get_Http(alipayNotifyURL, 120000);

            int i;
            NameValueCollection coll;
            coll = Request.QueryString;
            String[] requestarr = coll.AllKeys;
            //進行排序；
            string[] Sortedstr = BubbleSort(requestarr);

            //構造待md5摘要字符串 ；

            StringBuilder prestr = new StringBuilder();

            for (i = 0; i < Sortedstr.Length; i++)
            {
                if (Request.Form[Sortedstr[i]] != "" && Sortedstr[i] != "sign" && Sortedstr[i] != "sign_type")
                {
                    if (i == Sortedstr.Length - 1)
                    {
                        prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]]);
                    }
                    else
                    {
                        prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]] + "&");

                    }
                }


            }

            prestr.Append(key);
            string mysign = GetMD5(prestr.ToString(), _input_charset);
            string sign = Request.QueryString["sign"];
            string trade_status = Request.QueryString["trade_status"];

            if (mysign == sign && responseTxt == "true" && trade_status == "TRADE_SUCCESS")   //驗證支付發過來的消息，簽名是否正確
            {
                string order_amount = Request.QueryString["total_fee"].ToString().Trim();
                string order_code = Request.QueryString["out_trade_no"].ToString().Trim();

              
                //updateOrder(order_code);//更新訂單狀態
                Response.Redirect(""); //跳轉到支付成功頁面
            }
            else
            {

                Response.Write("支付失敗。");
                Response.Write("<br>Result:responseTxt=" + responseTxt);
                Response.Write("<br>Result:mysign=" + mysign);
                Response.Write("<br>Result:sign=" + sign);
            }
            return View();
        }


        /// <summary>
        /// 支付回調頁面
        /// </summary>
        /// <returns></returns>
        public ActionResult AlipayNotify()
        {


            string alipayNotifyURL = "https://mapi.alipay.com/gateway.do?";
            string partner = ""; 		//partner合作伙伴id（必須填寫）
            string key = ""; //partner 的對應交易安全校驗碼（必須填寫）

            alipayNotifyURL = alipayNotifyURL + "service=notify_verify" + "&partner=" + partner + "¬ify_id=" + Request.Form["notify_id"];

            //獲取支付寶ATN返回結果，true是正確的訂單信息，false 是無效的
            string responseTxt = Get_Http(alipayNotifyURL, 120000);

            int i;
            NameValueCollection coll;
            //Load Form variables into NameValueCollection variable.
            coll = Request.Form;

            // Get names of all forms into a string array.
            String[] requestarr = coll.AllKeys;
            //進行排序；
            string[] Sortedstr = BubbleSort(requestarr);
            //構造待md5摘要字符串 ；
            StringBuilder prestr = new StringBuilder();

            for (i = 0; i < Sortedstr.Length; i++)
            {
                if (Request.Form[Sortedstr[i]] != "" && Sortedstr[i] != "sign" && Sortedstr[i] != "sign_type")
                {
                    if (i == Sortedstr.Length - 1)
                    {
                        prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]]);
                    }
                    else
                    {
                        prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]] + "&");

                    }
                }


            }

            prestr.Append(key);
            string mysign = GetMD5(prestr.ToString());
            string sign = Request.QueryString["sign"];
            string trade_status = Request.QueryString["trade_status"];

            if (mysign == sign && responseTxt == "true" && trade_status == "TRADE_SUCCESS")   //驗證支付發過來的消息，簽名是否正確
            {
                string order_amount = Request.QueryString["total_fee"].ToString().Trim();
                string order_code = Request.QueryString["out_trade_no"].ToString().Trim();


              
                //  updateOrder(order_code);//更新訂單狀態
                Response.Redirect(""); //跳轉到支付成功頁面
            }
            else
            {

                Response.Write("支付失敗。");
                Response.Write("<br>Result:responseTxt=" + responseTxt);
                Response.Write("<br>Result:mysign=" + mysign);
                Response.Write("<br>Result:sign=" + sign);
            }
            return View();
        }

        public static string GetMD5(string s, string _input_charset)
        {
            /// <summary>
            /// 與ASP兼容的MD5加密算法
            /// </summary>

            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] t = md5.ComputeHash(Encoding.GetEncoding(_input_charset).GetBytes(s));
            StringBuilder sb = new StringBuilder(32);
            for (int i = 0; i < t.Length; i++)
            {
                sb.Append(t[i].ToString("x").PadLeft(2, '0'));
            }
            return sb.ToString();
        }



        public static  string GetMD5(string s)
        {
            /// <summary>
            /// 與ASP兼容的MD5加密算法
            /// </summary>

            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] t = md5.ComputeHash(Encoding.GetEncoding("utf-8").GetBytes(s));
            StringBuilder sb = new StringBuilder(32);
            for (int i = 0; i < t.Length; i++)
            {
                sb.Append(t[i].ToString("x").PadLeft(2, '0'));
            }
            return sb.ToString();
        }

        public static string[] BubbleSort(string[] r)
        {
            /// <summary>
            /// 冒泡排序法
            /// </summary>

            int i, j; //交換標誌 
            string temp;

            bool exchange;

            for (i = 0; i < r.Length; i++) //最多做R.Length-1趟排序 
            {
                exchange = false; //本趟排序開始前，交換標誌應爲假

                for (j = r.Length - 2; j >= i; j--)
                {
                    if (System.String.CompareOrdinal(r[j + 1], r[j]) < 0)　//交換條件
                    {
                        temp = r[j + 1];
                        r[j + 1] = r[j];
                        r[j] = temp;

                        exchange = true; //發生了交換，故將交換標誌置爲真 
                    }
                }

                if (!exchange) //本趟排序未發生交換，提前終止算法 
                {
                    break;
                }

            }
            return r;
        }
        //獲取遠程服務器ATN結果
        public String Get_Http(String a_strUrl, int timeout)
        {
            string strResult;
            try
            {

                HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(a_strUrl);
                myReq.Timeout = timeout;
                HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
                Stream myStream = HttpWResp.GetResponseStream();
                StreamReader sr = new StreamReader(myStream, Encoding.Default);
                StringBuilder strBuilder = new StringBuilder();
                while (-1 != sr.Peek())
                {
                    strBuilder.Append(sr.ReadLine());
                }

                strResult = strBuilder.ToString();
            }
            catch (Exception exp)
            {

                strResult = "錯誤：" + exp.Message;
            }

            return strResult;
        }

	}
}