分享一随机生成汉字、字母、数字的方法给大家

myde520

例如将“{随机汉字}”替换成单个汉字，在网上找到的方法如果出现连续替换的话，会出现随机生成的汉字会相同，经过我自己在网上借鉴一些前辈的思维，自己修改了后代码如下：

[C#] 纯文本查看 复制代码

/// <summary>
        /// 替换变量
        /// </summary>
        /// <param name="content"></param>
        /// <returns></returns>
        public static string replaceBianLiang(string content)
        {
            content = content.Replace("{当前时间}", DateTime.Now.TimeOfDay.ToString());
            string[] bianliang = new string[] { "{随机字母}", "{随机数字}", "{随机汉字}" };
            Regex r;
            int count;
            string readstr="";
            foreach(string str in bianliang){
                count = (content.Length - content.Replace(str, "").Length) / str.Length;
                if (str == "{随机汉字}") readstr = RandChina(count);
                if (str == "{随机数字}") readstr = GenerateCheckCodeNum(count);
                if (str == "{随机字母}") readstr = GenerateRandomNumber(count);
                if (count > readstr.Length) count = readstr.Length;
                r = new Regex(str.Replace("{", "\\{").Replace("}", "\\}"));
                for (int i = 0; i < count;i++ )
                {
                    content = r.Replace(content, readstr.Substring(i,1), 1);
                }
            }
            return content;
        }


 /// <summary>
        /// 随机生成字符串
        /// </summary>
        /// <param name="Length"></param>
        /// <returns></returns>
        public static string GenerateRandomNumber(int Length)
        {
            StringBuilder newRandom = new StringBuilder(62);
            Random rd = new Random();
            for (int i = 0; i < Length; i++)
            {
                newRandom.Append(constant[rd.Next(62)]);
            }
            return newRandom.ToString();
        }

        /// <summary>
        /// 随机生成数字
        /// </summary>
        /// <param name="codeCount"></param>
        /// <returns></returns>
        public static string GenerateCheckCodeNum(int codeCount)
        {
            int rep = 0;
            string str = string.Empty;
            long num2 = DateTime.Now.Ticks + rep;
            rep++;
            Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
            for (int i = 0; i < codeCount; i++)
            {
                int num = random.Next();
                str = str + ((char)(0x30 + ((ushort)(num % 10)))).ToString();
            }
            return str;
        }

        /// <summary>
        /// 此函数为生成指定数目的汉字
        /// </summary>
        /// <param name="charLen">汉字数目</param>
        /// <returns>所有汉字</returns>
        public static string RandChina(int charLen)
        {
            int area, code;//汉字由区位和码位组成(都为0-94,其中区位16-55为一级汉字区,56-87为二级汉字区,1-9为特殊字符区)
            StringBuilder strtem = new StringBuilder();
            Random rand = new Random();
            for (int i = 0; i < charLen; i++)
            {
                area = rand.Next(16, 88);
                if (area == 55)//第55区只有89个字符
                {
                    code = rand.Next(1, 90);
                }
                else
                {
                    code = rand.Next(1, 94);
                }
                strtem.Append(Encoding.GetEncoding("GB2312").GetString(new byte[] { Convert.ToByte(area + 160), Convert.ToByte(code + 160) }));
            }
            return strtem.ToString();
        }

cload

感谢分享！

songwenqi

我只是路过打酱油的。

站长苏飞

受教了学习中……

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