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185 wiersze
7.2 KiB
185 wiersze
7.2 KiB
using System.Web;
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using System.Text;
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using System.IO;
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using System.Net;
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using System;
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using System.Collections.Generic;
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namespace Com.Alipay
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{
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/// <summary>
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/// 类名：Notify
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/// 功能：支付宝通知处理类
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/// 详细：处理支付宝各接口通知返回
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/// 版本：3.3
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/// 修改日期：2011-07-05
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/// '说明：
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/// 以下代码只是为了方便商户测试而提供的样例代码，商户可以根据自己网站的需要，按照技术文档编写,并非一定要使用该代码。
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/// 该代码仅供学习和研究支付宝接口使用，只是提供一个参考。
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///
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/// //////////////////////注意/////////////////////////////
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/// 调试通知返回时，可查看或改写log日志的写入TXT里的数据，来检查通知返回是否正常
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/// </summary>
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public class Notify
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{
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#region 字段
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private string _partner = ""; //合作身份者ID
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private string _key = ""; //商户的私钥
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private string _input_charset = ""; //编码格式
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private string _sign_type = ""; //签名方式
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//支付宝消息验证地址
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private string Https_veryfy_url = "https://mapi.alipay.com/gateway.do?service=notify_verify&";
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#endregion
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/// <summary>
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/// 构造函数
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/// 从配置文件中初始化变量
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/// </summary>
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/// <param name="inputPara">通知返回参数数组</param>
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/// <param name="notify_id">通知验证ID</param>
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public Notify()
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{
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Basic.BLL.siteconfig bll = new Basic.BLL.siteconfig();
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Basic.Model.siteconfig model = bll.loadConfig(Basic.Tools.Utils.GetXmlMapPath(Basic.Keys.FILE_SITE_XML_CONFING));
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//初始化基础配置信息
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_partner = model.Alipay_partner;
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_key = model.Alipay_key;
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_input_charset = Config.Input_charset.Trim().ToLower();
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_sign_type = Config.Sign_type.Trim().ToUpper();
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}
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/// <summary>
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/// 验证消息是否是支付宝发出的合法消息
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/// </summary>
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/// <param name="inputPara">通知返回参数数组</param>
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/// <param name="notify_id">通知验证ID</param>
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/// <param name="sign">支付宝生成的签名结果</param>
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/// <returns>验证结果</returns>
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public bool Verify(SortedDictionary<string, string> inputPara, string notify_id, string sign)
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{
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//获取返回时的签名验证结果
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bool isSign = GetSignVeryfy(inputPara, sign);
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//获取是否是支付宝服务器发来的请求的验证结果
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string responseTxt = "true";
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if (notify_id != null && notify_id != "") { responseTxt = GetResponseTxt(notify_id); }
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//写日志记录（若要调试，请取消下面两行注释）
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//string sWord = "responseTxt=" + responseTxt + "\n isSign=" + isSign.ToString() + "\n 返回回来的参数：" + GetPreSignStr(inputPara) + "\n ";
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//Core.LogResult(sWord);
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//判断responsetTxt是否为true，isSign是否为true
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//responsetTxt的结果不是true，与服务器设置问题、合作身份者ID、notify_id一分钟失效有关
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//isSign不是true，与安全校验码、请求时的参数格式（如：带自定义参数等）、编码格式有关
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if (responseTxt == "true" && isSign)//验证成功
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{
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return true;
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}
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else//验证失败
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{
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return false;
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}
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}
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/// <summary>
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/// 获取待签名字符串（调试用）
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/// </summary>
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/// <param name="inputPara">通知返回参数数组</param>
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/// <returns>待签名字符串</returns>
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private string GetPreSignStr(SortedDictionary<string, string> inputPara)
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{
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Dictionary<string, string> sPara = new Dictionary<string, string>();
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//过滤空值、sign与sign_type参数
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sPara = Core.FilterPara(inputPara);
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//获取待签名字符串
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string preSignStr = Core.CreateLinkString(sPara);
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return preSignStr;
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}
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/// <summary>
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/// 获取返回时的签名验证结果
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/// </summary>
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/// <param name="inputPara">通知返回参数数组</param>
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/// <param name="sign">对比的签名结果</param>
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/// <returns>签名验证结果</returns>
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private bool GetSignVeryfy(SortedDictionary<string, string> inputPara, string sign)
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{
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Dictionary<string, string> sPara = new Dictionary<string, string>();
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//过滤空值、sign与sign_type参数
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sPara = Core.FilterPara(inputPara);
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//获取待签名字符串
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string preSignStr = Core.CreateLinkString(sPara);
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//获得签名验证结果
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bool isSgin = false;
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if (sign != null && sign != "")
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{
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switch (_sign_type)
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{
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case "MD5":
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isSgin = AlipayMD5.Verify(preSignStr, sign, _key, _input_charset);
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break;
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default:
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break;
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}
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}
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return isSgin;
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}
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/// <summary>
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/// 获取是否是支付宝服务器发来的请求的验证结果
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/// </summary>
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/// <param name="notify_id">通知验证ID</param>
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/// <returns>验证结果</returns>
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private string GetResponseTxt(string notify_id)
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{
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string veryfy_url = Https_veryfy_url + "partner=" + _partner + "¬ify_id=" + notify_id;
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//获取远程服务器ATN结果，验证是否是支付宝服务器发来的请求
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string responseTxt = Get_Http(veryfy_url, 120000);
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return responseTxt;
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}
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/// <summary>
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/// 获取远程服务器ATN结果
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/// </summary>
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/// <param name="strUrl">指定URL路径地址</param>
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/// <param name="timeout">超时时间设置</param>
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/// <returns>服务器ATN结果</returns>
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private string Get_Http(string strUrl, int timeout)
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{
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string strResult;
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try
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{
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HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(strUrl);
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myReq.Timeout = timeout;
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HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
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Stream myStream = HttpWResp.GetResponseStream();
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StreamReader sr = new StreamReader(myStream, Encoding.Default);
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StringBuilder strBuilder = new StringBuilder();
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while (-1 != sr.Peek())
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{
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strBuilder.Append(sr.ReadLine());
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}
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strResult = strBuilder.ToString();
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}
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catch (Exception exp)
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{
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strResult = "错误：" + exp.Message;
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}
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return strResult;
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}
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}
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}
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