淘宝网支付宝开发的例子

using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Text; using System.Security.Cryptography; /// <summary> /// New Interface for AliPay /// </summary> namespace Gateway { /// <summary> /// created by sunzhizhi 2006.5.21,sunzhizhi@msn.com。 /// </summary> public class AliPay { 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("gb2312").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 quantity, string price, string show_url, string seller_email, string key, string return_url, string notify_url, string logistics_type, string logistics_fee, string logistics_payment, string logistics_type_1, string logistics_fee_1, string logistics_payment_1, string payment_type ) { /// <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, "price=" + price, "show_url=" + show_url, "quantity=" + quantity, "seller_email=" + seller_email, "notify_url=" + notify_url, "return_url=" + return_url, "logistics_type="+logistics_type, "logistics_fee="+logistics_fee , "logistics_payment="+logistics_payment, "logistics_type_1="+logistics_type_1, "logistics_fee_1="+logistics_fee_1, "logistics_payment_1="+logistics_payment_1, "payment_type=" + payment_type }; //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()); //构造支付Url； StringBuilder parameter = new StringBuilder(); parameter.Append(gateway); for (i = 0; i < Sortedstr.Length; i++) { parameter.Append(Sortedstr[i] + "&"); } parameter.Append("sign=" + sign + "&sign_type=" + sign_type); //返回支付Url； return parameter.ToString(); } } }