实体转Hashtable，按照字典序排序并做MD5_netcore 实体跟hashtable 互相转换-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_26727185/article/details/122742503

本文介绍了一种将实体对象转换为Hashtable的方法，并实现了一个用于生成签名的算法。该签名算法通过对参数进行排序并使用MD5加密来确保数据的完整性和安全性。

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        /// <summary>
        /// 将实体转换为Hashtable
        /// </summary>
        /// <typeparam name="T">实体类型</typeparam>
        /// <param name="obj">实体实例</param>
        /// <returns>Hashtable</returns>
        internal Hashtable ConvertEntityToHashtable<T>(T obj)
        {
            Hashtable hst = new Hashtable();
            try
            {
                Type type = obj.GetType();
                foreach (PropertyInfo pi in type.GetProperties())
                {
                  
                    PropertyInfo property = type.GetProperty(pi.Name);
                    hst.Add(pi.Name, property.GetValue(obj, null));
                   
                }
                return hst;
            }
            catch (Exception ex)
            {
                System.Console.Out.WriteLine(ex.Message);
                return null;
            }
        }


        /// <summary>
        /// 排序，获取签名
        /// </summary>
        /// <returns>sin签名</returns>
        internal string getSin(Hashtable ParametersTosin, string appkey)
        {
            StringBuilder sb = new StringBuilder();
            ArrayList akeys = new ArrayList(ParametersTosin.Keys);
            akeys.Sort();
            foreach (string k in akeys)
            {
                string v = (string)ParametersTosin[k];
                if (null != v && "".CompareTo(v) != 0
                    && "sign".CompareTo(k) != 0 && "key".CompareTo(k) != 0)
                {
                    sb.Append(k + "=" + v + "&");
                }
            }
            sb.Append("key=" + appkey);
            string sign = "";
            using (var md5 = MD5.Create())
            {
                var strResult = BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sb.ToString())));
                sign = strResult.Replace("-", "");
            }
            return sign;
        }