1拼多多接口上传及相关功能（不含部分功能） 2拼多多选品

AllBase/BaseClass.cs

@@ -750,6 +750,61 @@ namespace AllBase
         {
             return LoginApiUrl + "/wxxd_" + file + "?obj=" + BaseClass.MainPath + "/wxxd_" + file;
         }
+
+        private static char[] constant =
+        {
+            '0','1','2','3','4','5','6','7','8','9',
+            'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
+            'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
+        };
+
+        /// <summary>
+        /// 随机返回指定位数的字母数字组合
+        /// </summary>
+        /// <param name="iLength"></param>
+        /// <returns></returns>
+        public static string GetRandomAlphanumeric(int iLength)
+        {
+            System.Text.StringBuilder newRandom = new System.Text.StringBuilder(62);
+            for (int i = 0; i < iLength; i++)
+            {
+                newRandom.Append(constant[Randomx.GetId(62)]);
+            }
+            return newRandom.ToString();
+        }
+
+        public static long ConvertDateTimeLong(DateTime time)
+        {
+            System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
+            return (long)(time - startTime).TotalMilliseconds;
+        }
+        /// <summary>
+        /// 获取Unix毫秒级时间戳
+        /// </summary>
+        /// <returns>当前时间戳</returns>
+        public static long ConvertDateTimeLong()
+        {
+            return (GetServerTimeString().ToUniversalTime().Ticks - 621355968000000000) / 10000;
+        }
+
+        /// <summary>
+        /// 获取两个标题相似度
+        /// </summary>
+        /// <param name="refererTitle">参照标题</param>
+        /// <param name="checkTitle">检测标题</param>
+        /// <returns>相似度</returns>
+        public static double GetSimularityBetween2Text(string refererTitle, string checkTitle)
+        {
+            double sameCnt = 0;
+            for (int i = 0; i < refererTitle.Length; i++)
+            {
+                if (checkTitle.IndexOf(refererTitle.Substring(i, 1)) != -1)
+                {
+                    sameCnt += 1;
+                }
+            }
+            return Math.Round(sameCnt / Convert.ToDouble(refererTitle.Length), 2);
+        }
     }
 
     public class KeyValueBase