Hidistro.ControlPanel/Hidistro/ControlPanel/OutPay/App/Core.cs

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namespace Hidistro.ControlPanel.OutPay.App
{
    using System;
    using System.Collections.Generic;
    using System.IO;
    using System.Runtime.InteropServices;
    using System.Security.Cryptography;
    using System.Text;
    using System.Web;

    public class Core
    {
        public static string _input_charset = "";
        public static string _partner = "";
        public static string _private_key = "";
        public static string _sign_type = "";
        public static string GATEWAY_NEW = "https://mapi.alipay.com/gateway.do?";

        public static string BuildRequest(SortedDictionary<string, string> sParaTemp, string strMethod, string strButtonValue)
        {
            Dictionary<string, string> dictionary = new Dictionary<string, string>();
            dictionary = BuildRequestPara(sParaTemp);
            StringBuilder builder = new StringBuilder();
            builder.Append("<form id='alipaysubmit' name='alipaysubmit' action='" + GATEWAY_NEW + "_input_charset=" + _input_charset + "' method='" + strMethod.ToLower().Trim() + "'>");
            foreach (KeyValuePair<string, string> pair in dictionary)
            {
                builder.Append("<input type='hidden' name='" + pair.Key + "' value='" + pair.Value + "'/>");
            }
            builder.Append("<input type='submit' value='" + strButtonValue + "' style='display:none;'></form>");
            builder.Append("<script>document.forms['alipaysubmit'].submit();</script>");
            return builder.ToString();
        }

        private static string BuildRequestMysign(Dictionary<string, string> sPara)
        {
            string content = CreateLinkString(sPara);
            switch (_sign_type)
            {
                case "RSA":
                    return RSAFromPkcs8.sign(content, _private_key, _input_charset);

                case "MD5":
                    return GetMD5(content + _private_key, _input_charset);
            }
            return "";
        }

        private static Dictionary<string, string> BuildRequestPara(SortedDictionary<string, string> sParaTemp)
        {
            Dictionary<string, string> sPara = new Dictionary<string, string>();
            string str = "";
            sPara = FilterPara(sParaTemp);
            str = BuildRequestMysign(sPara);
            sPara.Add("sign", str);
            sPara.Add("sign_type", _sign_type);
            return sPara;
        }

        public static string CreateLinkString(Dictionary<string, string> dicArray)
        {