public static string Escape(string s)
        {
            StringBuilder sb = new StringBuilder();
            byte[] ba = System.Text.Encoding.Unicode.GetBytes(s);
            for (int i = 0; i < ba.Length; i += 2)
            {
                if (ba[i + 1] == 0)
                {
                    //数字,大小写字母,以及"+-*/._"不变
                    if (
                          (ba[i] >= 48 && ba[i] = 64 && ba[i] = 97 && ba[i]