支付宝接口小实现例子
以下是摘抄的例子，望对你我都有点启发，
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { //lbl_Num.Text = Request["OrderID"].ToString(); //lbl_Prices.Text = Request["Money"].ToString(); //按时构造订单号； System.DateTime currentTime = new System.DateTime(); currentTime = System.DateTime.Now; string out_trade_no = currentTime.ToString("g"); out_trade_no = out_trade_no.Replace("-", ""); out_trade_no = out_trade_no.Replace(":", ""); out_trade_no = out_trade_no.Replace(" ", ""); lbl_Num.Text = out_trade_no; } } //进入支付宝支付 protected void Button1_Click(object sender, EventArgs e) { string out_trade_no = "2009052610003"; //业务参数赋值； string gateway = "https://www.alipay.com/cooperate/gateway.do?"; //'支付接口 string service = "create_direct_pay_by_user"; string partner = "2086102833883695"; //partner 合作伙伴ID 保留字段 string sign_type = "MD5"; string subject = "####购物网商品"; //subject 商品名称 string body = "####购物网"; //body 商品描述 string payment_type = "1"; //支付类型 string total_fee = "0.01"; //总金额 0.01～50000.00 string show_url = "www.163.3com"; string seller_email = "566666666434@163.com"; //卖家账号 string key = "7xlym97z460sz8psuidrslw7k3o986cz"; //partner账户的支付宝安全校验码 string return_url = "http://www.163.com/Alipay_Return.aspx"; //服务器通知返回接口 string notify_url = "http://www.163.com/Alipay_Notify.aspx"; //服务器通知返回接口 string _input_charset = "utf-8"; 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 ); Response.Redirect(aliay_url); } //构建AliPay类 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 ) { /// <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 = 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(); } }protected void BtnAlipay_Click(object sender, EventArgs e) { //业务参数赋值； string gateway = "https://www.alipay.com/cooperate/gateway.do?"; //支付接口 string service = "create_direct_pay_by_user"; //服务名称，这个是识别是何接口实现何功能的标识，请勿修改 string seller_email = ""; //商家签约时的支付宝帐号，即收款的支付宝帐号 string sign_type = "MD5"; //加密类型,签名方式“不用改” string key = ""; //安全校验码，与partner是一组，获取方式是：用签约时支付宝帐号登陆支付宝网站www.alipay.com，在商家服务我的商家里即可查到。 string partner = ""; //商户ID，合作身份者ID，合作伙伴ID string _input_charset = "utf-8"; //编码类型，完全根据客户自身的项目的编码格式而定，千万不要填错。否则极其容易造成MD5加密错误。 string show_url = "http://www.alipay.com/"; //展示地址，即在支付页面时，商品名称旁边的“详情”的链接地址。 string out_trade_no = TxtOrderno.Text.Trim(); //客户自己的订单号，订单号必须在自身订单系统中保持唯一性 string subject = TxtSubject.Text.Trim(); //商品名称，也可称为订单名称，该接口并不是单一的只能买一样东西，可把一次支付当作一次下订单 string body = TxtBody.Text.Trim(); //商品描述，即备注 string total_fee = TxtTotal_fee.Text.Trim(); //商品价格，也可称为订单的总金额 //服务器通知url（Alipay_Notify.aspx文件所在路经），必须是完整的路径地址 string notify_url = "http://localhost:8978/direct_vs2005_utf/Alipay_Notify.aspx"; //服务器返回url（Alipay_Return.aspx文件所在路经），必须是完整的路径地址 string return_url = "http://localhost:8978/direct_vs2005_utf/Alipay_Return.aspx"; //构造数组； //以下数组即是参与加密的参数，若参数的值不允许为空，若该参数为空，则不要成为该数组的元素 string[] para ={ "service="+service, "partner=" + partner, "seller_email=" + seller_email, "out_trade_no=" + out_trade_no, "subject=" + subject, "body=" + body, "total_fee=" + total_fee, "show_url=" + show_url, "payment_type=1", "notify_url=" + notify_url, "return_url=" + return_url, "_input_charset="+_input_charset }; //支付URL生成 string aliay_url = AliPay.CreatUrl( //gateway,//GET方式传递参数时请去掉注释 para, _input_charset, sign_type, key ); //以下是GET方式传递参数 //Response.Redirect(aliay_url); //以下是POST方式传递参数 Response.Write("<form name='alipaysubmit' method='post' action='https://www.alipay.com/cooperate/gateway.do?_input_charset=utf-8'>"); Response.Write("<input type='hidden' name='service' value=" + service + ">"); Response.Write("<input type='hidden' name='partner' value=" + partner + ">"); Response.Write("<input type='hidden' name='seller_email' value=" + seller_email + ">"); Response.Write("<input type='hidden' name='out_trade_no' value=" + out_trade_no + ">"); Response.Write("<input type='hidden' name='subject' value=" + subject + ">"); Response.Write("<input type='hidden' name='body' value=" + body + ">"); Response.Write("<input type='hidden' name='total_fee' value=" + total_fee + ">"); Response.Write("<input type='hidden' name='show_url' value=" + show_url + ">"); Response.Write("<input type='hidden' name='return_url' value=" + return_url + ">"); Response.Write("<input type='hidden' name='notify_url' value=" + notify_url + ">"); Response.Write("<input type='hidden' name='payment_type' value=1>"); Response.Write("<input type='hidden' name='sign' value=" + aliay_url + ">"); Response.Write("<input type='hidden' name='sign_type' value=" + sign_type + ">"); Response.Write("</form>"); Response.Write("<script>"); Response.Write("document.alipaysubmit.submit()"); Response.Write("</script>"); }