1     public class IoHelper  2     {  3         /// <summary>  4         /// 判断文件是否存在  5         /// </summary>  6         /// <param name="fileName">文件路径</param>  7         /// <returns>是否存在</returns>  8         public static bool Exists(string fileName)  9         { 10             if (fileName == null || fileName.Trim() == "") 11             { 12                 return false; 13             } 14             return File.Exists(fileName); 15         } 16  17  18         /// <summary> 19         /// 创建文件夹 20         /// </summary> 21         /// <param name="dirName">文件夹名</param> 22         /// <returns></returns> 23         public static bool CreateDir(string dirName) 24         { 25             try 26             { 27                 if (dirName == null) 28                     throw new Exception("dirName"); 29                 if (!Directory.Exists(dirName)) 30                 { 31                     Directory.CreateDirectory(dirName); 32                 } 33                 return true; 34             } 35             catch (Exception er) 36             { 37                 throw new Exception(er.Message); 38             } 39         } 40  41  42         /// <summary> 43         /// 创建文件 44         /// </summary> 45         /// <param name="fileName">文件名</param> 46         /// <returns>创建失败返回false</returns> 47         public static bool CreateFile(string fileName) 48         { 49             try 50             { 51                 if (File.Exists(fileName)) return false; 52                 var fs = File.Create(fileName); 53                 fs.Close(); 54                 fs.Dispose(); 55             } 56             catch (IOException ioe) 57             { 58                 throw new IOException(ioe.Message); 59             } 60  61             return true; 62         } 63  64  65         /// <summary> 66         /// 读文件内容,转化为字符类型 67         /// </summary> 68         /// <param name="fileName">文件路径</param> 69         /// <returns></returns> 70         public static string Read(string fileName) 71         { 72             if (!Exists(fileName)) 73             { 74                 return null; 75             } 76             //将文件信息读入流中 77             using (var fs = new FileStream(fileName, FileMode.Open)) 78             { 79                 return new StreamReader(fs).ReadToEnd(); 80             } 81         } 82  83  84         /// <summary> 85         /// 文件转化为Char[]数组 86         /// </summary> 87         /// <param name="fileName"></param> 88         /// <returns></returns> 89         public static char[] FileRead(string fileName) 90         { 91             if (!Exists(fileName)) 92             { 93                 return null; 94             } 95             var byData = http://www.mamicode.com/new byte[1024]; 96             var charData = http://www.mamicode.com/new char[1024]; 97             try 98             { 99                 var fileStream = new FileStream(fileName, FileMode.Open);100                 fileStream.Seek(135, SeekOrigin.Begin);101                 fileStream.Read(byData, 0, 1024);102             }103             catch (Exception ex)104             {105                 throw new Exception(ex.Message);106             }107             var decoder = Encoding.UTF8.GetDecoder();108             decoder.GetChars(byData, 0, byData.Length, charData, 0);109             return charData;110         }111 112 113 114         /// <summary>115         /// 文件转化为byte[]116         /// </summary>117         /// <param name="fileName">文件路径</param>118         /// <returns></returns>119         public static byte[] ReadFile(string fileName)120         {121             FileStream pFileStream = null;122             try123             {124                 pFileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);125                 var r = new BinaryReader(pFileStream);126                 //将文件指针设置到文件开127                 r.BaseStream.Seek(0, SeekOrigin.Begin);128                 var pReadByte = r.ReadBytes((int)r.BaseStream.Length);129                 return pReadByte;130             }131             catch (Exception ex)132             {133                 throw new Exception(ex.Message);134 135             }136             finally137             {138                 if (pFileStream != null) pFileStream.Close();139             }140         }141 142 143         /// <summary>144         /// 将byte写入文件145         /// </summary>146         /// <param name="pReadByte">字节流</param>147         /// <param name="fileName">文件路径</param>148         /// <returns></returns>149         public static bool WriteFile(byte[] pReadByte, string fileName)150         {151             FileStream pFileStream = null;152             try153             {154                 pFileStream = new FileStream(fileName, FileMode.OpenOrCreate);155                 pFileStream.Write(pReadByte, 0, pReadByte.Length);156             }157             catch (Exception ex)158             {159                 throw new Exception(ex.Message);160             }161             finally162             {163                 if (pFileStream != null) pFileStream.Close();164             }165             return true;166 167         }168 169         public static string ReadLine(string fileName)170         {171             if (!Exists(fileName))172             {173                 return null;174             }175             using (var fs = new FileStream(fileName, FileMode.Open))176             {177                 return new StreamReader(fs).ReadLine();178             }179         }180 181 182         /// <summary>183         /// 写文件184         /// </summary>185         /// <param name="fileName">文件名</param>186         /// <param name="content">文件内容</param>187         /// <returns></returns>188         public static bool Write(string fileName, string content)189         {190             if (Exists(fileName) || content == null)191             {192                 return false;193             }194             try195             {196                 //将文件信息读入流中197                 //初始化System.IO.FileStream类的新实例与指定路径和创建模式198                 using (var fs = new FileStream(fileName, FileMode.OpenOrCreate))199                 {200                     //锁住流201                     lock (fs)202                     {203                         if (!fs.CanWrite)204                         {205                             throw new System.Security.SecurityException("文件fileName=" + fileName + "是只读文件不能写入!");206                         }207 208                         var buffer = Encoding.Default.GetBytes(content);209                         fs.Write(buffer, 0, buffer.Length);210                         return true;211                     }212                 }213             }214             catch (IOException ioe)215             {216                 throw new Exception(ioe.Message);217             }218 219         }220 221 222         /// <summary>223         /// 写入一行224         /// </summary>225         /// <param name="fileName">文件名</param>226         /// <param name="content">内容</param>227         /// <returns></returns>228         public static bool WriteLine(string fileName, string content)229         {230             if (string.IsNullOrEmpty(fileName))231                 throw new ArgumentNullException(fileName);232             if (string.IsNullOrEmpty(content))233                 throw new ArgumentNullException(content);234             using (var fs = new FileStream(fileName, FileMode.OpenOrCreate | FileMode.Append))235             {236                 //锁住流237                 lock (fs)238                 {239                     if (!fs.CanWrite)240                     {241                         throw new System.Security.SecurityException("文件fileName=" + fileName + "是只读文件不能写入!");242                     }243 244                     var sw = new StreamWriter(fs);245                     sw.WriteLine(content);246                     sw.Dispose();247                     sw.Close();248                     return true;249                 }250             }251         }252 253 254         /// <summary>255         /// 复制目录256         /// </summary>257         /// <param name="fromDir">被复制的目录</param>258         /// <param name="toDir">复制到的目录</param>259         /// <returns></returns>260         public static bool CopyDir(DirectoryInfo fromDir, string toDir)261         {262             return CopyDir(fromDir, toDir, fromDir.FullName);263         }264 265 266         /// <summary>267         /// 复制目录268         /// </summary>269         /// <param name="fromDir">被复制的目录</param>270         /// <param name="toDir">复制到的目录</param>271         /// <returns></returns>272         public static bool CopyDir(string fromDir, string toDir)273         {274             if (fromDir == null || toDir == null)275             {276                 throw new NullReferenceException("参数为空");277             }278 279             if (fromDir == toDir)280             {281                 throw new Exception("两个目录都是" + fromDir);282             }283 284             if (!Directory.Exists(fromDir))285             {286                 throw new IOException("目录fromDir=" + fromDir + "不存在");287             }288 289             var dir = new DirectoryInfo(fromDir);290             return CopyDir(dir, toDir, dir.FullName);291         }292 293 294         /// <summary>295         /// 复制目录296         /// </summary>297         /// <param name="fromDir">被复制的目录</param>298         /// <param name="toDir">复制到的目录</param>299         /// <param name="rootDir">被复制的根目录</param>300         /// <returns></returns>301         private static bool CopyDir(DirectoryInfo fromDir, string toDir, string rootDir)302         {303             foreach (var f in fromDir.GetFiles())304             {305                 var filePath = toDir + f.FullName.Substring(rootDir.Length);306                 var newDir = filePath.Substring(0, filePath.LastIndexOf("\\", StringComparison.Ordinal));307                 CreateDir(newDir);308                 File.Copy(f.FullName, filePath, true);309             }310 311             foreach (var dir in fromDir.GetDirectories())312             {313                 CopyDir(dir, toDir, rootDir);314             }315 316             return true;317         }318 319 320         /// <summary>321         /// 删除文件322         /// </summary>323         /// <param name="fileName">文件的完整路径</param>324         /// <returns></returns>325         public static bool DeleteFile(string fileName)326         {327             try328             {329                 if (!Exists(fileName)) return false;330                 File.Delete(fileName);331             }332             catch (IOException ioe)333             {334                 throw new ArgumentNullException(ioe.Message);335             }336 337             return true;338         }339 340 341         public static void DeleteDir(DirectoryInfo dir)342         {343             if (dir == null)344             {345                 throw new NullReferenceException("目录不存在");346             }347 348             foreach (var d in dir.GetDirectories())349             {350                 DeleteDir(d);351             }352 353             foreach (var f in dir.GetFiles())354             {355                 DeleteFile(f.FullName);356             }357 358             dir.Delete();359 360         }361 362 363         /// <summary>364         /// 删除目录365         /// </summary>366         /// <param name="dir">指定目录</param>367         /// <param name="onlyDir">是否只删除目录</param>368         /// <returns></returns>369         public static bool DeleteDir(string dir, bool onlyDir)370         {371             if (dir == null || dir.Trim() == "")372             {373                 throw new NullReferenceException("目录dir=" + dir + "不存在");374             }375 376             if (!Directory.Exists(dir))377             {378                 return false;379             }380 381             var dirInfo = new DirectoryInfo(dir);382             if (dirInfo.GetFiles().Length == 0 && dirInfo.GetDirectories().Length == 0)383             {384                 Directory.Delete(dir);385                 return true;386             }387 388 389             if (!onlyDir)390             {391                 return false;392             }393             DeleteDir(dirInfo);394             return true;395         }396 397 398         /// <summary>399         /// 在指定的目录中查找文件400         /// </summary>401         /// <param name="dir">目录</param>402         /// <param name="fileName">文件名</param>403         /// <returns></returns>404         public static bool FindFile(string dir, string fileName)405         {406             if (dir == null || dir.Trim() == "" || fileName == null || fileName.Trim() == "" || !Directory.Exists(dir))407             {408                 return false;409             }410 411             //传入文件路径，获取当前文件对象412             var dirInfo = new DirectoryInfo(dir);413             return FindFile(dirInfo, fileName);414 415         }416 417 418         /// <summary>419         /// 返回文件是否存在420         /// </summary>421         /// <param name="dir"></param>422         /// <param name="fileName"></param>423         /// <returns></returns>424         public static bool FindFile(DirectoryInfo dir, string fileName)425         {426             foreach (var d in dir.GetDirectories())427             {428                 if (File.Exists(d.FullName + "\\" + fileName))429                 {430                     return true;431                 }432                 FindFile(d, fileName);433             }434 435             return false;436         }437 438 439         /// <summary>440         /// 获取指定文件夹中的所有文件夹名称441         /// </summary>442         /// <param name="folderPath">路径</param>443         /// <returns></returns>444         public static List<string> FolderName(string folderPath)445         {446             var listFolderName = new List<string>();447             try448             {449                 var info = new DirectoryInfo(folderPath);450 451                 listFolderName.AddRange(info.GetDirectories().Select(nextFolder => nextFolder.Name));452             }453             catch (Exception er)454             {455                 throw new Exception(er.Message);456             }457 458             return listFolderName;459 460         }461 462 463         /// <summary>464         /// 获取指定文件夹中的文件名称465         /// </summary>466         /// <param name="folderPath">路径</param>467         /// <returns></returns>468         public static List<string> FileName(string folderPath)469         {470             var listFileName = new List<string>();471             try472             {473                 var info = new DirectoryInfo(folderPath);474 475                 listFileName.AddRange(info.GetFiles().Select(nextFile => nextFile.Name));476             }477             catch (Exception er)478             {479                 throw new Exception(er.Message);480             }481 482             return listFileName;483         }484     }

  1 /// <summary>  2 /// 利用 WinRAR 进行压缩  3 /// </summary>  4 /// <param name="path">将要被压缩的文件夹（绝对路径）</param>  5 /// <param name="rarPath">压缩后的 .rar 的存放目录（绝对路径）</param>  6 /// <param name="rarName">压缩文件的名称（包括后缀）</param>  7 /// <returns>true 或 false。压缩成功返回 true，反之，false。</returns>  8 public bool RAR(string path, string rarPath, string rarName)  9 { 10     bool flag = false; 11     string rarexe;       //WinRAR.exe 的完整路径 12     RegistryKey regkey;  //注册表键 13     Object regvalue;     //键值 14     string cmd;          //WinRAR 命令参数 15     ProcessStartInfo startinfo; 16     Process process; 17     try 18     { 19         regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command"); 20         regvalue = http://www.mamicode.com/regkey.GetValue("");  // 键值为 "d:\Program Files\WinRAR\WinRAR.exe" "%1" 21         rarexe = regvalue.ToString();     22         regkey.Close(); 23         rarexe = rarexe.Substring(1, rarexe.Length - 7);  // d:\Program Files\WinRAR\WinRAR.exe 24   25         Directory.CreateDirectory(path); 26         path = "\"" + path + "\""; 27         //压缩命令，相当于在要压缩的文件夹(path)上点右键->WinRAR->添加到压缩文件->输入压缩文件名(rarName) 28         cmd = string.Format("a {0} {1} -ep1 -o+ -inul -r -ibck", 29                             rarName, 30                             path); 31         startinfo = new ProcessStartInfo(); 32         startinfo.FileName = rarexe; 33         startinfo.Arguments = cmd;                          //设置命令参数 34         startinfo.WindowStyle = ProcessWindowStyle.Hidden;  //隐藏 WinRAR 窗口 35   36         startinfo.WorkingDirectory = rarPath; 37         process = new Process(); 38         process.StartInfo = startinfo; 39         process.Start(); 40         process.WaitForExit(); //无限期等待进程 winrar.exe 退出 41         if (process.HasExited) 42         { 43             flag = true; 44         } 45         process.Close(); 46     } 47     catch (Exception e) 48     { 49         throw e; 50     } 51     return flag; 52 } 53 /// <summary> 54 /// 利用 WinRAR 进行解压缩 55 /// </summary> 56 /// <param name="path">文件解压路径（绝对）</param> 57 /// <param name="rarPath">将要解压缩的 .rar 文件的存放目录（绝对路径）</param> 58 /// <param name="rarName">将要解压缩的 .rar 文件名（包括后缀）</param> 59 /// <returns>true 或 false。解压缩成功返回 true，反之，false。</returns> 60 public bool UnRAR(string path, string rarPath, string rarName) 61 { 62     bool flag = false; 63     string rarexe; 64     RegistryKey regkey; 65     Object regvalue; 66     string cmd; 67     ProcessStartInfo startinfo; 68     Process process; 69     try 70     { 71         regkey = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\shell\open\command"); 72         regvalue = http://www.mamicode.com/regkey.GetValue(""); 73         rarexe = regvalue.ToString(); 74         regkey.Close(); 75         rarexe = rarexe.Substring(1, rarexe.Length - 7); 76   77         Directory.CreateDirectory(path); 78         //解压缩命令，相当于在要压缩文件(rarName)上点右键->WinRAR->解压到当前文件夹 79         cmd = string.Format("x {0} {1} -y", 80                             rarName, 81                             path); 82         startinfo = new ProcessStartInfo(); 83         startinfo.FileName = rarexe; 84         startinfo.Arguments = cmd; 85         startinfo.WindowStyle = ProcessWindowStyle.Hidden; 86   87         startinfo.WorkingDirectory = rarPath; 88         process = new Process(); 89         process.StartInfo = startinfo; 90         process.Start(); 91         process.WaitForExit(); 92         if (process.HasExited) 93         { 94             flag = true; 95         } 96         process.Close(); 97     } 98     catch (Exception e) 99     {100         throw e;101     }102     return flag;103 }

 1 //RAR文件解压缩: 2 using (Stream stream = File.OpenRead(@"C:\Code\sharpcompress.rar")) 3 { 4     var reader = ReaderFactory.Open(stream); 5     while (reader.MoveToNextEntry()) 6     { 7         if (!reader.Entry.IsDirectory) 8         { 9             Console.WriteLine(reader.Entry.FilePath);10             reader.WriteEntryToDirectory(@"C:\temp", ExtractOptions.ExtractFullPath | ExtractOptions.Overwrite);11         }12     }13 }14 15 16 //ZIP文件解压缩:17 var archive = ArchiveFactory.Open(@"C:\Code\sharpcompress\TestArchives\sharpcompress.zip");18 foreach (var entry in archive.Entries)19 {20     if (!entry.IsDirectory)21     {22         Console.WriteLine(entry.FilePath);23         entry.WriteToDirectory(@"C:\temp", ExtractOptions.ExtractFullPath | ExtractOptions.Overwrite);24     }25 }26 27 28 //压缩为ZIP文件:29 using (var archive = ZipArchive.Create())30 {31     archive.AddAllFromDirectoryEntry(@"C:\\source");32     archive.SaveTo("@C:\\new.zip");33 }34 35  36 37 //用Writer API创建ZIP文件 38 using (var zip = File.OpenWrite("C:\\test.zip"))39 using (var zipWriter = WriterFactory.Open(ArchiveType.Zip, zip))40 {41      foreach (var filePath in filesList)42      {43         zipWriter.Write(Path.GetFileName(file), filePath);44      }45 }46  47 48 //创建tar.bz249 using (Stream stream = File.OpenWrite(tarPath))50 using (var writer = WriterFactory.Open(ArchiveType.Tar, stream))51 {52     writer.WriteAll(filesPath, "*", SearchOption.AllDirectories);53 }54 using (Stream stream = File.OpenWrite(tarbz2Path))55 using (var writer = WriterFactory.Open(ArchiveType.BZip2, stream))56 {57     writer.Write("Tar.tar", tarPath);58 }