C#支付宝扫码支付代码完整版

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> 
      /// 与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; //交换标志  
      string temp; 
 
      bool exchange; 
 
      for (i = 0; i < r.Length; i++) //最多做R.Length-1趟排序  
      { 
        exchange = false; //本趟排序开始前，交换标志应为假 
 
        for (j = r.Length - 2; j >= i; j--) 
        { 
          if (System.String.CompareOrdinal(r[j + 1], r[j]) < 0)　//交换条件 
          { 
            temp = r[j + 1]; 
            r[j + 1] = r[j]; 
            r[j] = temp; 
 
            exchange = true; //发生了交换，故将交换标志置为真  
          } 
        } 
 
        if (!exchange) //本趟排序未发生交换，提前终止算法  
        { 
          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; 
      //构造数组； 
      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 
          }; 
        } 
 
 
      } 
      //进行排序； 
      string[] Sortedstr = BubbleSort(Oristr); 
 
 
      //构造待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); 
 
      //构造支付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,sunzhizhi@msn.com。 
      /// </summary> 
      int i; 
 
      //构造数组； 
      string[] Oristr ={  
        "service="+service,  
        "partner=" + partner, 
        "out_trade_no=" + out_trade_no,    
        "_input_charset="+_input_charset      
 
        }; 
 
      //进行排序； 
      string[] Sortedstr = BubbleSort(Oristr); 
 
 
      //构造待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); 
 
      //构造支付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; 
    } 
 
  } 
} 

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> 
    /// 支付页面 
    /// </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";         //支付类型  
      string show_url = "http://www.letao.com"; 
      string seller_email = "";       //卖家账号 
      string key = "";       //partner账户的支付宝安全校验码 
      string return_url = "http://localhost:1396/ApliayDemo/ApliyReturn"; //服务器通知返回接口 
      string notify_url = "http://localhost:1396/ApliayDemo/AlipayNotify"; //服务器通知返回接口 
      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 = "康康体检套餐"; // subject商品名称 
      string body = "测试商品"; //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> 
    /// 返回通知页面 
    /// </summary> 
    /// <returns></returns> 
    public ActionResult ApliyReturn() 
    { 
 
      string alipayNotifyURL = "https://mapi.alipay.com/gateway.do?"; 
      string key = ""; //partner 的对应交易安全校验码（必须填写） 
      string _input_charset = "utf-8"; 
      string partner = "";    //partner合作伙伴id（必须填写） 
 
      alipayNotifyURL = alipayNotifyURL + "service=notify_verify" + "&partner=" + partner + "¬ify_id=" + Request.QueryString["notify_id"]; 
 
      //获取支付宝ATN返回结果，true是正确的订单信息，false 是无效的 
      string responseTxt = Get_Http(alipayNotifyURL, 120000); 
 
      int i; 
      NameValueCollection coll; 
      coll = Request.QueryString; 
      String[] requestarr = coll.AllKeys; 
      //进行排序； 
      string[] Sortedstr = BubbleSort(requestarr); 
 
      //构造待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")  //验证支付发过来的消息，签名是否正确 
      { 
        string order_amount = Request.QueryString["total_fee"].ToString().Trim(); 
        string order_code = Request.QueryString["out_trade_no"].ToString().Trim(); 
 
        
        //updateOrder(order_code);//更新订单状态 
        Response.Redirect(""); //跳转到支付成功页面 
      } 
      else 
      { 
 
        Response.Write("支付失败。"); 
        Response.Write("<br>Result:responseTxt=" + responseTxt); 
        Response.Write("<br>Result:mysign=" + mysign); 
        Response.Write("<br>Result:sign=" + sign); 
      } 
      return View(); 
    } 
 
 
    /// <summary> 
    /// 支付回调页面 
    /// </summary> 
    /// <returns></returns> 
    public ActionResult AlipayNotify() 
    { 
 
 
      string alipayNotifyURL = "https://mapi.alipay.com/gateway.do?"; 
      string partner = "";    //partner合作伙伴id（必须填写） 
      string key = ""; //partner 的对应交易安全校验码（必须填写） 
 
      alipayNotifyURL = alipayNotifyURL + "service=notify_verify" + "&partner=" + partner + "¬ify_id=" + Request.Form["notify_id"]; 
 
      //获取支付宝ATN返回结果，true是正确的订单信息，false 是无效的 
      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; 
      //进行排序； 
      string[] Sortedstr = BubbleSort(requestarr); 
      //构造待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")  //验证支付发过来的消息，签名是否正确 
      { 
        string order_amount = Request.QueryString["total_fee"].ToString().Trim(); 
        string order_code = Request.QueryString["out_trade_no"].ToString().Trim(); 
 
 
        
        // updateOrder(order_code);//更新订单状态 
        Response.Redirect(""); //跳转到支付成功页面 
      } 
      else 
      { 
 
        Response.Write("支付失败。"); 
        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> 
      /// 与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> 
      /// 与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; //交换标志  
      string temp; 
 
      bool exchange; 
 
      for (i = 0; i < r.Length; i++) //最多做R.Length-1趟排序  
      { 
        exchange = false; //本趟排序开始前，交换标志应为假 
 
        for (j = r.Length - 2; j >= i; j--) 
        { 
          if (System.String.CompareOrdinal(r[j + 1], r[j]) < 0)　//交换条件 
          { 
            temp = r[j + 1]; 
            r[j + 1] = r[j]; 
            r[j] = temp; 
 
            exchange = true; //发生了交换，故将交换标志置为真  
          } 
        } 
 
        if (!exchange) //本趟排序未发生交换，提前终止算法  
        { 
          break; 
        } 
 
      } 
      return r; 
    } 
    //获取远程服务器ATN结果 
    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 = "错误：" + exp.Message; 
      } 
 
      return strResult; 
    } 
 
  } 
}