C# 支付宝接口

C# 支付宝接口

生成url连接

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
public partial class pay : System.Web.UI.Page
{protected void Page_Load(object sender, EventArgs e){Encoding gb2312 = Encoding.GetEncoding("gb2312");Response.ContentEncoding = gb2312;Request.ContentEncoding = gb2312;}protected void ImageButton1_Click(object sender, ImageClickEventArgs e){if (Request.Cookies[FormsAuthentication.FormsCookieName] != null){Vlike_DB_read a = new Vlike_DB_read();string zfb_ddh = a.get_zfb_id(Membership.GetUser().UserName, Convert.ToInt32(DropDownList1.SelectedValue));Response.Redirect(img("0001", "包月", "影视包月  10元/月", zfb_ddh, "10.00", Membership.GetUser().UserName.ToUpper(), DropDownList1.SelectedValue));}else{Response.Write("<script type="text/javascript">alert("请先登陆!");</script>");}}private string img(string strcmd, string strSub, string strSubinfo, string strid, string strMoney, string strUser, string strNum){string strsellerEmail = "341081@qq";          //卖家支付宝帐号string strAc = "";            //卖家支付宝安全校验码string INTERFACE_URL = ":";string strCmd = strcmd;           //命令字string strSubject = strSub;       //商品名string strBody = strSubinfo;      //商品描述string strOrder_no = strid;       //商户订单号string strPrice = strMoney;       //商品单价 0.01～50000.00string rurl = "";          //商品展示网址string strType = "2";             //type支付类型    1：商品购买2：服务购买3：网络拍卖4：捐赠string strNumber = strNum;        //购买数量string strTransport = "3";        //发货方式        1：平邮2：快递3：虚拟物品string strOrdinary_fee = "";      //平邮运费string strExpress_fee = "";       //快递运费string strReadOnly = "true";      //交易信息是否只读string strBuyer_msg = "";         //买家给卖家的留言string strBuyer = "";             //买家EMAILstring strBuyer_name = strUser;   //买家姓名string strBuyer_address = "";     //买家地址string strBuyer_zipcode = "";     //买家邮编string strBuyer_tel = "";         //买家电话号码string strBuyer_mobile = "";      //买家手机号码string strPartner = "";           //合作伙伴ID    保留字段return CreatUrl(strsellerEmail, strAc, INTERFACE_URL, strCmd, strSubject, strBody,strOrder_no, strPrice, rurl, strType, strNumber, strTransport,strOrdinary_fee, strExpress_fee, strReadOnly, strBuyer_msg, strBuyer,strBuyer_name, strBuyer_address, strBuyer_zipcode, strBuyer_tel,strBuyer_mobile, strPartner);}private string CreatUrl(string strsellerEmail,string strAc,string INTERFACE_URL,string strCmd,string strSubject,string strBody,string strOrder_no,string strPrice,string rurl,string strType,string strNumber,string strTransport,string strOrdinary_fee,string strExpress_fee,string strReadOnly,string strBuyer_msg,string strBuyer,string strBuyer_name,string strBuyer_address,string strBuyer_zipcode,string strBuyer_tel,string strBuyer_mobile,string strPartner){   //以下参数值不能留空string str2CreateAc = "";str2CreateAc += "cmd" + strCmd + "subject" + strSubject;str2CreateAc += "body" + strBody;str2CreateAc += "order_no" + strOrder_no;str2CreateAc += "price" + strPrice;str2CreateAc += "url" + rurl;str2CreateAc += "type" + strType;str2CreateAc += "number" + strNumber;str2CreateAc += "transport" + strTransport;str2CreateAc += "ordinary_fee" + strOrdinary_fee;str2CreateAc += "express_fee" + strExpress_fee;str2CreateAc += "readonly" + strReadOnly;str2CreateAc += "buyer_msg" + strBuyer_msg;str2CreateAc += "seller" + strsellerEmail;str2CreateAc += "buyer" + strBuyer;str2CreateAc += "buyer_name" + strBuyer_name;str2CreateAc += "buyer_address" + strBuyer_address;str2CreateAc += "buyer_zipcode" + strBuyer_zipcode;str2CreateAc += "buyer_tel" + strBuyer_tel;str2CreateAc += "buyer_mobile" + strBuyer_mobile;str2CreateAc += "partner" + strPartner;str2CreateAc += strAc;string acCode = GetMD5(str2CreateAc);string parameter = "";parameter += INTERFACE_URL + strsellerEmail + "?cmd=" + strCmd;parameter += "&subject=" + Server.UrlEncode(strSubject);parameter += "&body=" + Server.UrlEncode(strBody);parameter += "&order_no=" + strOrder_no;parameter += "&url=" + rurl;parameter += "&price=" + strPrice;parameter += "&type=" + strType;parameter += "&number=" + strNumber;parameter += "&transport=" + strTransport;parameter += "&ordinary_fee=" + strOrdinary_fee;parameter += "&express_fee=" + strExpress_fee;parameter += "&readonly=" + strReadOnly;parameter += "&buyer_msg=" + strBuyer_msg;parameter += "&buyer=" + strBuyer;parameter += "&buyer_name=" + Server.UrlEncode(strBuyer_name);parameter += "&buyer_address=" + strBuyer_address;parameter += "&buyer_zipcode=" + strBuyer_zipcode;parameter += "&buyer_tel=" + strBuyer_tel;parameter += "&buyer_mobile=" + strBuyer_mobile;parameter += "&partner=" + strPartner;parameter += "&ac=" + acCode;return parameter;}private static string GetMD5(string s){System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();byte[] t = md5.ComputeHash(System.Text.Encoding.GetEncoding("gb2312").GetBytes(s));System.Text.StringBuilder sb = new System.Text.StringBuilder(32);for (int i = 0; i < t.Length; i++){sb.Append(t[i].ToString("x").PadLeft(2, "0"));}return sb.ToString();}
}

接收支付宝信息并进行相应操作 

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Web" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Text" %>
<%@ Import Namespace="System.Security.Cryptography" %>
<script type="text/C#" runat="server">
private string returnTxt = "N";              //返回给支付宝通知接口的结果
private string alipayNotifyURL = ".do?";    //支付宝查询接口URL
private string myalipayEmail = "341081@qq";            //商户的支付宝Email
private string constPaySecurityCode = "";                  //码
private SqlConnection conn = new SqlConnection();
private string GetMD5(string s)
{System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();byte[] t = md5.ComputeHash(System.Text.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();
}
private String Get_Http(String a_strUrl, int timeout)
{string strResult;try{System.Net.HttpWebRequest myReq = (System.Net.HttpWebRequest) System.Net.HttpWebRequest.Create(a_strUrl);myReq.Timeout = timeout;System.Net.HttpWebResponse HttpWResp = (System.Net.HttpWebResponse) myReq.GetResponse();Stream myStream = HttpWResp.GetResponseStream();StreamReader sr = new StreamReader(myStream, System.Text.Encoding.Default);System.Text.StringBuilder strBuilder = new System.Text.StringBuilder();while (-1 != sr.Peek()){strBuilder.Append(sr.ReadLine() + "rn");}strResult = strBuilder.ToString();}catch (Exception exp){strResult = "错误：" + exp.Message;}return strResult;
}
public void send(string sql)
{string dbconn = "data source=127.0.0.1;UID=Cm;PWD=fallenangel;database=text";conn = new SqlConnection(dbconn);conn.Open();SqlCommand cmd = new SqlCommand(sql, conn);int aa = cmd.ExecuteNonQuery();conn.Close();
}
private void Page_Load(object sender, System.EventArgs e)
{//检查支付宝通知接口传递过来的参数是否合法string msg_id = System.Web.HttpContext.Current.Request["msg_id"];string order_no = System.Web.HttpContext.Current.Request["order_no"];string gross = System.Web.HttpContext.Current.Request["gross"];string buyer_email = System.Web.HttpContext.Current.Request["buyer_email"];string buyer_name = System.Web.HttpContext.Current.Request["buyer_name"];string buyer_address = System.Web.HttpContext.Current.Request["buyer_address"];string buyer_zipcode = System.Web.HttpContext.Current.Request["buyer_zipcode"];string buyer_tel = System.Web.HttpContext.Current.Request["buyer_tel"];string buyer_mobile = System.Web.HttpContext.Current.Request["buyer_mobile"];string action = System.Web.HttpContext.Current.Request["action"];string s_date = System.Web.HttpContext.Current.Request["date"];string ac = System.Web.HttpContext.Current.Request["ac"];string notify_type = System.Web.HttpContext.Current.Request["notify_type"];alipayNotifyURL = alipayNotifyURL + "msg_id=" + msg_id + "&email=" + myalipayEmail + "&order_no=" + order_no;//获取支付宝ATN返回结果，true和false都是正确的订单信息，invalid 是无效的string responseTxt = Get_Http(alipayNotifyURL, 120000);string Str = "msg_id" + msg_id + "order_no" + order_no + "gross" + gross + "buyer_email" + buyer_email + "buyer_name" + buyer_name + "buyer_address" + buyer_address + "buyer_zipcode" + buyer_zipcode + "buyer_tel" + buyer_tel + "buyer_mobile" + buyer_mobile + "action" + action + "date" + s_date + constPaySecurityCode;string ac_code = GetMD5(Str);if (action == "test") //支付宝接口测试是否有效{returnTxt = "Y";}if (action == "sendOff")  //发货通知{if (responseTxt.Substring(0, 4) == "true" || responseTxt.Substring(0, 4) == "fals")//ATN，验证消息是否支付宝发过来 {if (ac_code == ac)//验证消息是否被修改{//数据库操作}}}if (action == "checkOut")  //交易完成通知 {returnTxt = "N";if (responseTxt.Substring(0, 4) == "true"|| responseTxt.Substring(0, 4) == "fals")//ATN，验证消息是否支付宝发过来 {if (ac_code == ac)//验证消息是否被修改{//数据库操作    }}}System.Web.HttpContext.Current.Response.Write(returnTxt);
}
</script>