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5.1 KiB

using System.Web;
using System.Text;
using System.Security.Cryptography;
using System.IO;
using System.Net;
using System;
using System.Collections.Generic;
using System.Xml;
namespace Com.Alipay
{
/// <summary>
/// 类名:Core
/// 功能:支付宝接口公用函数类
/// 详细:该类是请求、通知返回两个文件所调用的公用函数核心处理文件,不需要修改
/// 版本:3.3
/// 修改日期:2012-07-05
/// 说明:
/// 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。
/// 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。
/// </summary>
public class Core
{
public Core()
{
}
/// <summary>
/// 除去数组中的空值和签名参数并以字母a到z的顺序排序
/// </summary>
/// <param name="dicArrayPre">过滤前的参数组</param>
/// <returns>过滤后的参数组</returns>
public static Dictionary<string, string> FilterPara(SortedDictionary<string, string> dicArrayPre)
{
Dictionary<string, string> dicArray = new Dictionary<string, string>();
foreach (KeyValuePair<string, string> temp in dicArrayPre)
{
if (temp.Key.ToLower() != "sign" && temp.Key.ToLower() != "sign_type" && temp.Value != "" && temp.Value != null)
{
dicArray.Add(temp.Key, temp.Value);
}
}
return dicArray;
}
/// <summary>
/// 把数组所有元素,按照“参数=参数值”的模式用“&”字符拼接成字符串
/// </summary>
/// <param name="sArray">需要拼接的数组</param>
/// <returns>拼接完成以后的字符串</returns>
public static string CreateLinkString(Dictionary<string, string> dicArray)
{
StringBuilder prestr = new StringBuilder();
foreach (KeyValuePair<string, string> temp in dicArray)
{
prestr.Append(temp.Key + "=" + temp.Value + "&");
}
//去掉最後一個&字符
int nLen = prestr.Length;
prestr.Remove(nLen-1,1);
return prestr.ToString();
}
/// <summary>
/// 把数组所有元素,按照“参数=参数值”的模式用“&”字符拼接成字符串,并对参数值做urlencode
/// </summary>
/// <param name="sArray">需要拼接的数组</param>
/// <param name="code">字符编码</param>
/// <returns>拼接完成以后的字符串</returns>
public static string CreateLinkStringUrlencode(Dictionary<string, string> dicArray, Encoding code)
{
StringBuilder prestr = new StringBuilder();
foreach (KeyValuePair<string, string> temp in dicArray)
{
prestr.Append(temp.Key + "=" + HttpUtility.UrlEncode(temp.Value, code) + "&");
}
//去掉最後一個&字符
int nLen = prestr.Length;
prestr.Remove(nLen - 1, 1);
return prestr.ToString();
}
/// <summary>
/// 写日志,方便测试(看网站需求,也可以改成把记录存入数据库)
/// </summary>
/// <param name="sWord">要写入日志里的文本内容</param>
public static void LogResult(string sWord)
{
string strPath = HttpContext.Current.Server.MapPath("log");
strPath = strPath + "\\" + DateTime.Now.ToString().Replace(":", "") + ".txt";
StreamWriter fs = new StreamWriter(strPath, false, System.Text.Encoding.Default);
fs.Write(sWord);
fs.Close();
}
/// <summary>
/// 获取文件的md5摘要
/// </summary>
/// <param name="sFile">文件流</param>
/// <returns>MD5摘要结果</returns>
public static string GetAbstractToMD5(Stream sFile)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] result = md5.ComputeHash(sFile);
StringBuilder sb = new StringBuilder(32);
for (int i = 0; i < result.Length; i++)
{
sb.Append(result[i].ToString("x").PadLeft(2, '0'));
}
return sb.ToString();
}
/// <summary>
/// 获取文件的md5摘要
/// </summary>
/// <param name="dataFile">文件流</param>
/// <returns>MD5摘要结果</returns>
public static string GetAbstractToMD5(byte[] dataFile)
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] result = md5.ComputeHash(dataFile);
StringBuilder sb = new StringBuilder(32);
for (int i = 0; i < result.Length; i++)
{
sb.Append(result[i].ToString("x").PadLeft(2, '0'));
}
return sb.ToString();
}
}
}