让支付宝更容易,面相对象的支付宝

支付宝接口,我拿到代码后,重新整理了一下.

具体的,将功能分为4个文件

Alipay.cs --->支付宝数据结构类

AlipayComm.cs--->公共代码静态类

AlipayResults.cs--->返回值类型类

AlipayServiceType.cs--->服务类型(比如我就是用的即时到帐)

 

Alipay.cs:

 

using System;
using System.Collections.Generic;
using System.Text;

namespace System.AlipaySystem
{
    /// <summary>
    /// 支付宝数据
    /// </summary>
    public class Alipay
    {
        #region GetWay
        string gateway;
        /// <summary>
        /// 获取或设置网关
        /// </summary>
        public string GateWay
        {
            get
            {
                return gateway;
            }
            set
            {
                gateway = value;
            }
        }
        #endregion

        #region Service
        string service;
        /// <summary>
        /// 服务类型
        /// </summary>
        public string Service
        {
            get
            {
                return service;
            }
            set
            {
                service = value;
            }
        }
        #endregion

        #region Partner
        string partner;
        /// <summary>
        /// 拍档合作伙伴ID
        /// </summary>
        public string Partner
        {
            get
            {
                return partner;
            }
            set
            {
                partner = value;
            }
        }
        #endregion

        #region SignType
        string sign_type;
        /// <summary>
        /// 签名方式
        /// </summary>
        public string SignType
        {
            get
            {
                return sign_type;
            }
            set
            {
                sign_type = value;
            }
        }
        #endregion

        #region OutTradeNo
        string out_trade_no;
        /// <summary>
        /// 获取或设置订单号
        /// </summary>
        public string OutTradeNo
        {
            get
            {
                return out_trade_no;
            }
            set
            {
                out_trade_no=value;
            }
        }
        #endregion

        #region Subject
        string subject;
        /// <summary>
        /// 获取或设置商品名称
        /// </summary>
        public string Subject
        {
            get
            {
                return subject;
            }
            set
            {
                subject = value;
            }
        }
        #endregion

        #region Body
        string body;
        /// <summary>
        /// 商品描述
        /// </summary>
        public string Body
        {
            get
            {
                return body;
            }
            set
            {
                body = value;
            }
        }
        #endregion

        #region PaymentType
        string payment_type;
        /// <summary>
        /// 支付类型
        /// </summary>
        public string PaymentType
        {
            get
            {
                return payment_type;
            }
            set
            {
                payment_type = value;
            }
        }
        #endregion

        #region TotalFee
        string total_fee;
        /// <summary>
        /// 获取或设置金额
        /// </summary>
        public string TotalFee
        {
            get
            {
                return total_fee;
            }
            set
            {
                total_fee = value;
            }
        }
        #endregion

        #region ShowUrl
        string show_url;
        /// <summary>
        /// 
        /// </summary>
        public string ShowUrl
        {
            get
            {
                return show_url;
            }
            set
            {
                show_url = value;
            }
        }
        #endregion

        #region SelllerEmail
        string seller_email;
        /// <summary>
        /// 获取或设置卖家账号
        /// </summary>
        public string SellerEmail
        {
            get
            {
                return seller_email;
            }
            set
            {
                seller_email = value;
            }
        }
        #endregion

        #region Key
        string key;
        /// <summary>
        /// 合作伙伴的安全密钥
        /// </summary>
        public string Key
        {
            get
            {
                return key;
            }
            set
            {
                key = value;
            }
        }
        #endregion

        #region ReturnUrl
        string return_url;
        /// <summary>
        /// 获取或设置返回的Url地址
        /// </summary>
        public string ReturnUrl
        {
            get
            {
                return return_url;
            }
            set
            {
                return_url = value;
            }
        }
        #endregion

        #region InputCharset
        string _input_charset;
        /// <summary>
        /// 获取或设置字符集
        /// </summary>
        public string InputCharset
        {
            get
            {
                return _input_charset;
            }
            set
            {
                _input_charset = value;
            }
        }
        #endregion

        #region NotifyUrl
        string notify_url;
        /// <summary>
        /// 获取通知的Url
        /// </summary>
        public string NotifyUrl
        {
            get
            {
                return notify_url;
            }
            set
            {
                notify_url = value;
            }
        }
        #endregion





        #region ToString()
        /// <summary>
        /// 输出Url接口
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            return AlipayComm.CreatHttpRequestUrl(GateWay, Service, Partner, SignType, OutTradeNo, Subject, Body, PaymentType, TotalFee, ShowUrl, SellerEmail, Key, ReturnUrl, InputCharset, NotifyUrl);
        }
        #endregion
    }
}

 

AlipayComm.cs:

 

using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Security.Cryptography;
using System.Net;

namespace System.AlipaySystem
{
    /// <summary>
    /// AlipayComm 支付宝接口公共代码
    /// </summary>
    public static class AlipayComm
    {
        /// <summary>
        /// 接口地址
        /// </summary>
        public const string AlipayGateWay = "https://www.alipay.com/cooperate/gateway.do?";

        /// <summary>
        /// 支付宝ID(支付宝公司提供)
        /// </summary>
        public const string AlipayName = "20880xxxxxx";
        /// <summary>
        /// 支付宝密码,这里填写你的密码(支付宝公司提供)
        /// </summary>
        public const string AlipayPassword = "mmxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
        /// <summary>
        /// 支付宝默认编码
        /// </summary>
        public const string AlipayCharset = "utf-8";

        /// <summary>
        /// 支付宝账户(支付宝公司提供)
        /// </summary>
        public const string AlipayEmail = "xxx@xxxx.com";

        /// <summary>
        /// 加密方式
        /// </summary>
        public const string AlipaySignType = "MD5";

        #region CreateNew()
        /// <summary>
        /// 工厂模式建立一个支付类型
        /// </summary>
        /// <returns></returns>
        public static Alipay CreateNew()
        {
            Alipay pay = new Alipay();
            pay.Partner = AlipayName;
            pay.Key = AlipayPassword;
            pay.GateWay = AlipayGateWay;
            pay.InputCharset = AlipayCharset;
            pay.PaymentType = "2";
            pay.SignType = AlipaySignType;
            pay.SellerEmail = AlipayEmail;
            return pay;
        }
        #endregion

        #region CreateMd5(s,charset)
        /// <summary>
        /// 与ASP兼容的MD5加密算法
        /// </summary>
        public static string CreateMd5(string s, string _input_charset)
        {
            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 CreateMd5(string s)
        {
            return CreateMd5(s, AlipayCharset);
        }
        #endregion



        #region Sort(r)
        /// <summary>
        /// 对参数进行排序
        /// </summary>
        /// <param name="r"></param>
        /// <returns></returns>
        public static string[] Sort(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;
        }
        #endregion

        #region CreateHttpRequestUrl()
        /// <summary>
        /// 建立Http请求的Url
        /// </summary>
        /// <param name="gateway"></param>
        /// <param name="service"></param>
        /// <param name="partner"></param>
        /// <param name="sign_type"></param>
        /// <param name="out_trade_no"></param>
        /// <param name="subject"></param>
        /// <param name="body"></param>
        /// <param name="payment_type"></param>
        /// <param name="total_fee"></param>
        /// <param name="show_url"></param>
        /// <param name="seller_email"></param>
        /// <param name="key"></param>
        /// <param name="return_url"></param>
        /// <param name="_input_charset"></param>
        /// <param name="notify_url"></param>
        /// <returns></returns>
        public static string CreatHttpRequestUrl(
          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
          )
        {
            /// <summary>
            /// created by sunzhizhi 2006.5.21,sunzhizhi@msn.com。
            /// </summary>
            int i;

            //构造数组；
            string[] Oristr ={ 
                "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 = Sort(Oristr);// 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 = CreateMd5(prestr.ToString(), _input_charset);// GetMD5(prestr.ToString(), _input_charset);

            //构造支付Url；
            //char[] delimiterChars = { '=' };
            StringBuilder parameter = new StringBuilder();
            parameter.Append(gateway);
            //重新写构造代码,原来的代码有'='无法进行解码的问题
            int index1;
            for (i = 0; i < Sortedstr.Length; i++)
            {
                index1 = Sortedstr[i].IndexOf('=');
                //append key
                parameter.Append(Sortedstr[i].Substring(0, index1!=-1?index1:Sortedstr[i].Length));
                parameter.Append("=");
                //append value
                parameter.Append(index1 != -1 && index1 != Sortedstr[i].Length - 1 ? HttpUtility.UrlEncode(Sortedstr[i].Substring(index1 + 1)) : string.Empty);
                parameter.Append("&");
                //原来的Url解码有问题,上面已经重写
                //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();

        }
        #endregion

        #region GetRequestResult(url,timeout)
        //获取远程服务器ATN结果
        public static string GetRequestResult(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;
        }
        #endregion


        #region CreateDateString()
        public static string CreateDateString()
        {
            return CreateDateString(DateTime.Now);
        }

        public static string CreateDateString(DateTime time)
        {
            return CreateDateString(time.ToString("g"));
        }

        public static string CreateDateString(string dts)
        {
            TextBuilder text = TextBuilder.GetTextBuilder(dts);
            text.Replace("-", "");
            text.Replace(";", "");
            text.Replace(" ", "");
            dts = text.ToString();
            TextBuilder.Release(text);
            return dts;
        }
        #endregion

    }
}

 

AlipayResult.cs:

 

using System;
using System.Collections.Generic;
using System.Text;

namespace com.Rogue.AlipaySystem
{
    public static class AlipayResult
    {
        /// <summary>
        /// 参数错误
        /// </summary>
        public const string Invalid = "invalid";

        /// <summary>
        /// 成功
        /// </summary>
        public const string True = "true";

        /// <summary>
        /// 失败
        /// </summary>
        public const string False = "false";

    }
}

 

 

AlipayServiceType.cs:

 

using System;
using System.Collections.Generic;
using System.Text;

namespace System.AlipaySystem
{
    public static class AlipayServiceType
    {
        /// <summary>
        /// 标准接口
        /// </summary>
        public const string TradeCreateByBuyer = "trade_create_by_buyer";

        /// <summary>
        /// 即时到帐
        /// </summary>
        public const string CreateDirectPayByUser = "create_direct_pay_by_user";


    }
}

 

 

注意的是,Alypay.cs这个类里面的参数一定要填写完整.

我在AlipayComm.cs里面有一个CreateNew是一个工厂模式的静态实例化方法

比如可以Alipay pay=AlipayComm.CreateNew();

大家可以自己添加自己的实例化代码.

 

原来的支付宝,有个问题,Return_Url返回地址不能带参数,

也就是return_url="http://www.163.com/?uid=123";这句话会出现错误"ILLEGAL_SIGN";

原因是支付宝给的CreatUrl函数中:

  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]) + "&");

 

在上面的代码片段中.Split的问题.

比如http://www.163.com/?uid=123这个返回网址,他会错误的把等于号(=)左右切开.然后分别赋值.

这样的话,uid=123又变成了一个参数.....MD5校验,怎么都不回通过的.