把一个字符串处理成一个合法的文件名. c#, java都可用.

在上传文件的时候，我们很头疼的对文件的中文命名，一个字符串经常不合法导致文件存储不上，该方法经过多次改造，分享给各位。

该文件位于： 开源驰骋工作流bp框架里面.

源代码

   /// <summary>
        /// 处理文件名称
        /// </summary>
        /// <param name="fileNameFormat">文件格式</param>
        /// <returns>返回合法的文件名</returns>
        public static string PraseStringToFileName(string fileNameFormat)
        {
            char[] strs = "+#?*\"<>/;,-:%~".ToCharArray();
            foreach (char c in strs)
                fileNameFormat = fileNameFormat.Replace(c.ToString(), "_");

            strs = "：，。；？".ToCharArray();
            foreach (char c in strs)
                fileNameFormat = fileNameFormat.Replace(c.ToString(), "_");

            //去掉空格.
            while (fileNameFormat.Contains(" ") == true)
                fileNameFormat = fileNameFormat.Replace(" ", "");

            //替换特殊字符.
            fileNameFormat = fileNameFormat.Replace("\t\n", "");

            //处理合法的文件名.
            StringBuilder rBuilder = new StringBuilder(fileNameFormat);
            foreach (char rInvalidChar in Path.GetInvalidFileNameChars())
                rBuilder.Replace(rInvalidChar.ToString(), string.Empty);

            fileNameFormat = rBuilder.ToString();

            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace("__", "_");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");
            fileNameFormat = fileNameFormat.Replace(" ", "");

            if (fileNameFormat.Length > 240)
                fileNameFormat = fileNameFormat.Substring(0, 240);

            return fileNameFormat;
        }