通过C#将GB18030编码转义为UTF-8

使用C#代码，对于GB18030编码转义为UTF-8格式。

using System.Text;public class FileEncodingConverter
{// 支持转换的文件扩展名列表（可根据需求扩展）private static readonly string[] SupportedExtensions = { ".sln", ".cpp", ".h", ".txt", ".csv", ".log", ".json", ".xml", ".html", ".css", ".js" };public static void ConvertFolderToUTF8(string folderPath){try{// 遍历文件夹及其子文件夹中的所有文件foreach (var file in Directory.EnumerateFiles(folderPath, "*", SearchOption.AllDirectories)){var ext = Path.GetExtension(file).ToLower();if (SupportedExtensions.Contains(ext)){try{ConvertFileToUTF8(file);}catch (Exception ex){Console.WriteLine($"Error processing {file}: {ex.Message}");}}}Console.WriteLine("所有支持的文件已转换为 UTF-8 编码！");}catch (Exception ex){Console.WriteLine($"程序异常：{ex.Message}");}}private static void ConvertFileToUTF8(string filePath){// 检测文件编码var detectedEncoding = DetectEncoding(filePath);if (detectedEncoding == null){throw new Exception("无法检测文件编码");}// 读取文件内容string content = File.ReadAllText(filePath, detectedEncoding);// 保存为UTF-8（无BOM）File.WriteAllText(filePath, content, new UTF8Encoding(false));Console.WriteLine($"成功转换：{filePath}");}private static Encoding DetectEncoding(string path){using (var reader = new BinaryReader(File.OpenRead(path))){byte[] bytes = reader.ReadBytes(4); // 读取前4字节// 检查UTF-8 BOMif (bytes.Length >= 3 && bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF){return Encoding.UTF8;}// 检查UTF-16 BOM（虽然用户可能不需要，但完整检测）if (bytes.Length >= 2 && (bytes[0] == 0xFF && bytes[1] == 0xFE) || (bytes[0] == 0xFE && bytes[1] == 0xFF)){return Encoding.Unicode;}// 无BOM，尝试检测为GB18030或UTF-8// 尝试用GB18030解码前100字节，若无异常则认为是GB18030Encoding gb18030 = Encoding.GetEncoding("GB18030");try{using (var stream = new FileStream(path, FileMode.Open, FileAccess.Read)){byte[] sample = new byte[100];stream.Read(sample, 0, 100);gb18030.GetChars(sample); // 触发解码}return gb18030;}catch (DecoderFallbackException){// GB18030解码失败，尝试UTF-8Encoding utf8 = Encoding.UTF8;try{using (var stream = new FileStream(path, FileMode.Open, FileAccess.Read)){byte[] sample = new byte[100];stream.Read(sample, 0, 100);utf8.GetChars(sample); // 触发解码}return utf8;}catch (DecoderFallbackException){// 无法确定，返回默认编码（如系统默认）return Encoding.Default;}}}}// 程序入口public static void Main(){// 步骤1：注册编码提供者（必须在首次使用编码前调用）Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);// 步骤2：使用GB18030编码Encoding gb18030 = Encoding.GetEncoding("GB18030");#region 加载包测试byte[] bytes = gb18030.GetBytes("你好，世界！");string text = gb18030.GetString(bytes);Console.WriteLine(text);#endregionstring folderPath = "dir";ConvertFolderToUTF8(folderPath);}
}