Web/Alipay/AliReturn.aspx.cs

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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;
using System.Collections.Specialized;
using System.IO;
using System.Data.SqlClient;
using System.Data.OleDb;
using System.Net;

public partial class Alipay_AliReturn : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //支付宝信息
        WMPT.Model.acountInfo mymodel = SectionProxyData.getOnlinePayType(1);
        string alipayNotifyURL = "https://mapi.alipay.com/gateway.do?service=notify_verify";
        string key = mymodel.Ali_Key; //partner 的对应交易安全校验码（必须填写）
        string partner = mymodel.Ali_Partner; 		//partner合作伙伴id（必须填写）
        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。

        alipayNotifyURL = alipayNotifyURL + "&partner=" + partner + "&notify_id=" + Request.QueryString["notify_id"];

        //获取支付宝ATN返回结果，true是正确的订单信息，false 是无效的
        string responseTxt = Get_Http(alipayNotifyURL, 120000);
        int i;
        NameValueCollection coll;
        //Load Form variables into NameValueCollection variable.
        coll = Request.QueryString;

        // Get names of all forms into a string array.
        String[] requestarr = coll.AllKeys;

        //进行排序；
        string[] Sortedstr = AliPay.BubbleSort(requestarr);

        //构造待md5摘要字符串 ；

        StringBuilder prestr = new StringBuilder();

        for (i = 0; i < Sortedstr.Length; i++)
        {
            if (Request.Form[Sortedstr[i]] != "" && Sortedstr[i] != "sign" && Sortedstr[i] != "sign_type")
            {
                if (i == Sortedstr.Length - 1)
                {
                    prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]]);
                }
                else
                {
                    prestr.Append(Sortedstr[i] + "=" + Request.QueryString[Sortedstr[i]] + "&");

                }