支付宝接口

解决方案中有三个项目以及NDoc生成的文档，简单的序列图：CommonAliPay，封装的支付宝接口。

 TestAli,asp.net的测试项目

TestCommonAliPay，Nunit的测试项目。

调用方法：

1、引入CommonAliPay.dll

2、实现支付宝服务接口的方法调用方式：

 AliPay ap = new AliPay();

        string key = "";//填写自己的key

        string partner = "";//填写自己的Partner

        StandardGoods bp = new StandardGoods("trade_create_by_buyer", partner, key, "MD5", "卡2", Guid.NewGuid().ToString(), 2.551m, 1, "[e-mail]", "[e-mail]"

            , "EMS", 25.00m, "BUYER_PAY","1");

           bp.Notify_Url = "http://203.86.79.185/ali/notify.aspx";

        ap.CreateStandardTrade("https://www.alipay.com/cooperate/gateway.do", bp, this);上面是通用的调用方式。

下面是只支持虚拟货物的方式：

 string key = "";//填写自己的key

        string partner = "";//填写自己的Partner

        AliPay ap = new AliPay();

        DigitalGoods bp = new DigitalGoods("create_digital_goods_trade_p", partner, key, "MD5", "卡2", Guid.NewGuid().ToString(), 2.551m, 1, "[e-mail]", "[e-mail]");

        bp.Notify_Url = "http://203.86.79.185/ali/notify.aspx";

        ap.CreateDigitalTrade("https://www.alipay.com/cooperate/gateway.do", bp, this);3、实现支付宝通知接口方法的调用（支持虚拟和实物）：

protected void Page_Load(object sender, EventArgs e)

    {

      

        string key = "";//填写自己的key

        string partner = "";//填写自己的Partner

         AliPay ap = new AliPay();

         string notifyid = Request.Form["notify_id"];

         Verify v = new Verify("notify_verify", partner, notifyid);

        ap.WaitSellerSendGoods+=new AliPay.ProcessNotifyEventHandler(ap_WaitSellerSendGoods);

        ap.WaitBuyerPay += new AliPay.ProcessNotifyEventHandler(ap_WaitBuyerPay);

        ap.ProcessNotify(this, "https://www.alipay.com/cooperate/gateway.do",key,v, "utf-8");

    }

    void ap_WaitBuyerPay(object sender, NotifyEventArgs e)

    {

        // //加入自己的处理逻辑

        Log4net.log.Error("wait buyer pay fire");

    }

  

    private void ap_WaitSellerSendGoods(object sender, NotifyEventArgs e)

    {

        //加入自己的处理逻辑

        Log4net.log.Error("WaitSellerSendGoods fire");

    }支付宝的交易状态都被定义成了类似名称的事件。

部分源代码解析：

1、解析Forms集合到NotifyEventArgs类，因为后面此类的数据要用来做MD5Sign，所以所有值类型，不能存在初始值，如：int的0等。因此用Nullable范型。

   private NotifyEventArgs ParseNotify(NameValueCollection nv, object obj)

        {

            PropertyInfo[] propertyInfos = obj.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance);

            foreach (PropertyInfo pi in propertyInfos)

            {

                string v = nv.Get(pi.Name.ToLower());

                if (v != null)

                {

                    if (pi.PropertyType == typeof(string))

                    {

                        pi.SetValue(obj, v, null);

                    }

                    else if (pi.PropertyType == typeof(int?))

                    {

                        pi.SetValue(obj, int.Parse(v), null);

                    }

                    else if (pi.PropertyType == typeof(decimal?))

                    {

                        pi.SetValue(obj, decimal.Parse(v), null);

                    }

                    else if (pi.PropertyType == typeof(DateTime?))

                    {

                        pi.SetValue(obj, DateTime.Parse(v), null);

                    }

                    else if (pi.PropertyType == typeof(bool))

                    {

                        pi.SetValue(obj, bool.Parse(v), null);

                    }

                    else

                    {

                        //转型失败会抛出异常

                        pi.SetValue(obj, v, null);

                    }

                }

            }

            return (NotifyEventArgs)obj;

        }

2、从类型中获取排序后的参数

 /**//// <summary>

        /// 获取排序后的参数

        /// </summary>

        /// <param ></param>

        /// <returns></returns>

        private SortedList<string,string> GetParam(object obj)

        {

           

            PropertyInfo[] propertyInfos = obj.GetType().GetProperties(BindingFlags.Public|BindingFlags.Instance);         

            SortedList<string, string> sortedList = new SortedList<string, string>(StringComparer.CurrentCultureIgnoreCase);

            foreach (PropertyInfo pi in propertyInfos)

            {

                if (pi.GetValue(obj, null) != null)

                {

                    if (pi.Name == "Sign" || pi.Name == "Sign_Type")

                    {

                        continue;

                    }

                    sortedList.Add(pi.Name.ToLower(), pi.GetValue(obj, null).ToString());

                 

                }

            }

            return sortedList;

                   

        }3、从SortedList中产生参数

 private string GetUrlParam(SortedList<string, string> sortedList,bool isEncode)

        {

            StringBuilder param = new StringBuilder();

            StringBuilder encodeParam = new StringBuilder();

            if (isEncode == false)

            {

                foreach (KeyValuePair<string, string> kvp in sortedList)

                {

                    string t = string.Format("{0}={1}", kvp.Key, kvp.Value);

                    param.Append(t + "&");

                }

                return param.ToString().TrimEnd('&');

            }

            else

            {

                foreach (KeyValuePair<string, string> kvp in sortedList)

                {

                     string et = string.Format("{0}={1}", HttpUtility.UrlEncode(kvp.Key), HttpUtility.UrlEncode(kvp.Value));

                     encodeParam.Append(et + "&");

                }

                return encodeParam.ToString().TrimEnd('&');

            }

 

        }