SharpZipLib是一個開源的C#壓縮解壓庫,應用非常廣泛。就像用ADO.NET操作資料庫要打開連接、執行命令、關閉連接等多個步驟一樣,用SharpZipLib進行壓縮和解壓也需要多個步驟。SharpZipLib功能比較強大,在很多C#的應用中,都有它的身影,我們可以通過引入SharpZipLi ...
SharpZipLib是一個開源的C#壓縮解壓庫,應用非常廣泛。就像用ADO.NET操作資料庫要打開連接、執行命令、關閉連接等多個步驟一樣,用SharpZipLib進行壓縮和解壓也需要多個步驟。SharpZipLib功能比較強大,在很多C#的應用中,都有它的身影,我們可以通過引入SharpZipLib類庫文件,在程式中實現自動壓縮文件以及解壓縮文件的功能,例如一個常見的情景就是用戶客戶端程式下載更新包,下載完成之後,在本地自動解壓文件。
SharpZipLib的官方地址是:http://icsharpcode.github.io/SharpZipLib/,實際使用可以通過NuGet獲取,在NuGet的地址是:http://www.nuget.org/packages/SharpZipLib/。
在這個封裝好的解壓縮工具類中,我們引用了SharpZipLib組件,實現瞭解壓縮.Zip文件格式的壓縮文件,允許指定解壓縮的路徑。具體實現如下:
public class SharpZip { public SharpZip() { } /// <summary> /// 壓縮 /// </summary> /// <param name="filename"> 壓縮後的文件名(包含物理路徑)</param> /// <param name="directory">待壓縮的文件夾(包含物理路徑)</param> public static void PackFiles(string filename, string directory) { try { FastZip fz = new FastZip(); fz.CreateEmptyDirectories = true; fz.CreateZip(filename, directory, true, ""); fz = null; } catch (Exception) { throw; } } /// <summary> /// 解壓縮 /// </summary> /// <param name="file">待解壓文件名(包含物理路徑)</param> /// <param name="dir"> 解壓到哪個目錄中(包含物理路徑)</param> public static bool UnpackFiles(string file, string dir) { try { if (!Directory.Exists(dir)) { Directory.CreateDirectory(dir); } ZipInputStream s = new ZipInputStream(File.OpenRead(file)); ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = Path.GetDirectoryName(theEntry.Name); string fileName = Path.GetFileName(theEntry.Name); if (directoryName != String.Empty) { Directory.CreateDirectory(dir + directoryName); } if (fileName != String.Empty) { FileStream streamWriter = File.Create(dir + theEntry.Name); int size = 2048; byte[] data = new byte[2048]; while (true) { size = s.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } streamWriter.Close(); } } s.Close(); return true; } catch (Exception) { throw; } } } public class ClassZip { #region 私有方法 /// <summary> /// 遞歸壓縮文件夾方法 /// </summary> private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName) { bool res = true; string[] folders, filenames; ZipEntry entry = null; FileStream fs = null; Crc32 crc = new Crc32(); try { entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); s.PutNextEntry(entry); s.Flush(); filenames = Directory.GetFiles(FolderToZip); foreach (string file in filenames) { fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file))); entry.DateTime = DateTime.Now; entry.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); } } catch { res = false; } finally { if (fs != null) { fs.Close(); fs = null; } if (entry != null) { entry = null; } GC.Collect(); GC.Collect(1); } folders = Directory.GetDirectories(FolderToZip); foreach (string folder in folders) { if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip)))) { return false; } } return res; } /// <summary> /// 壓縮目錄 /// </summary> /// <param name="FolderToZip">待壓縮的文件夾,全路徑格式</param> /// <param name="ZipedFile">壓縮後的文件名,全路徑格式</param> private static bool ZipFileDictory(string FolderToZip, string ZipedFile, int level) { bool res; if (!Directory.Exists(FolderToZip)) { return false; } ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile)); s.SetLevel(level); res = ZipFileDictory(FolderToZip, s, ""); s.Finish(); s.Close(); return res; } /// <summary> /// 壓縮文件 /// </summary> /// <param name="FileToZip">要進行壓縮的文件名</param> /// <param name="ZipedFile">壓縮後生成的壓縮文件名</param> private static bool ZipFile(string FileToZip, string ZipedFile, int level) { if (!File.Exists(FileToZip)) { throw new System.IO.FileNotFoundException("指定要壓縮的文件: " + FileToZip + " 不存在!"); } FileStream ZipFile = null; ZipOutputStream ZipStream = null; ZipEntry ZipEntry = null; bool res = true; try { ZipFile = File.OpenRead(FileToZip); byte[] buffer = new byte[ZipFile.Length]; ZipFile.Read(buffer, 0, buffer.Length); ZipFile.Close(); ZipFile = File.Create(ZipedFile); ZipStream = new ZipOutputStream(ZipFile); ZipEntry = new ZipEntry(Path.GetFileName(FileToZip)); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(level); ZipStream.Write(buffer, 0, buffer.Length); } catch { res = false; } finally { if (ZipEntry != null) { ZipEntry = null; } if (ZipStream != null) { ZipStream.Finish(); ZipStream.Close(); } if (ZipFile != null) { ZipFile.Close(); ZipFile = null; } GC.Collect(); GC.Collect(1); } return res; } #endregion /// <summary> /// 壓縮 /// </summary> /// <param name="FileToZip">待壓縮的文件目錄</param> /// <param name="ZipedFile">生成的目標文件</param> /// <param name="level">6</param> public static bool Zip(String FileToZip, String ZipedFile, int level) { if (Directory.Exists(FileToZip)) { return ZipFileDictory(FileToZip, ZipedFile, level); } else if (File.Exists(FileToZip)) { return ZipFile(FileToZip, ZipedFile, level); } else { return false; } } /// <summary> /// 解壓 /// </summary> /// <param name="FileToUpZip">待解壓的文件</param> /// <param name="ZipedFolder">解壓目標存放目錄</param> public static void UnZip(string FileToUpZip, string ZipedFolder) { if (!File.Exists(FileToUpZip)) { return; } if (!Directory.Exists(ZipedFolder)) { Directory.CreateDirectory(ZipedFolder); } ZipInputStream s = null; ZipEntry theEntry = null; string fileName; FileStream streamWriter = null; try { s = new ZipInputStream(File.OpenRead(FileToUpZip)); while ((theEntry = s.GetNextEntry()) != null) { if (theEntry.Name != String.Empty) { fileName = Path.Combine(ZipedFolder, theEntry.Name); if (fileName.EndsWith("/") || fileName.EndsWith("\\")) { Directory.CreateDirectory(fileName); continue; } streamWriter = File.Create(fileName); int size = 2048; byte[] data = new byte[2048]; while (true) { size = s.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } } } } finally { if (streamWriter != null) { streamWriter.Close(); streamWriter = null; } if (theEntry != null) { theEntry = null; } if (s != null) { s.Close(); s = null; } GC.Collect(); GC.Collect(1); } } } public class ZipHelper { #region 私有變數 String the_rar; RegistryKey the_Reg; Object the_Obj; String the_Info; ProcessStartInfo the_StartInfo; Process the_Process; #endregion /// <summary> /// 壓縮 /// </summary> /// <param name="zipname">要解壓的文件名</param> /// <param name="zippath">要壓縮的文件目錄</param> /// <param name="dirpath">初始目錄</param> public void EnZip(string zipname, string zippath, string dirpath) { try { the_Reg = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRAR.exe\Shell\Open\Command"); the_Obj = the_Reg.GetValue(""); the_rar = the_Obj.ToString(); the_Reg.Close(); the_rar = the_rar.Substring(1, the_rar.Length - 7); the_Info = " a " + zipname + " " + zippath; the_StartInfo = new ProcessStartInfo(); the_StartInfo.FileName = the_rar; the_StartInfo.Arguments = the_Info; the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden; the_StartInfo.WorkingDirectory = dirpath; the_Process = new Process(); the_Process.StartInfo = the_StartInfo; the_Process.Start(); } catch (Exception ex) { throw new Exception(ex.Message); } } /// <summary> /// 解壓縮 /// </summary> /// <param name="zipname">要解壓的文件名</param> /// <param name="zippath">要解壓的文件路徑</param> public void DeZip(string zipname, string zippath) { try { the_Reg = Registry.ClassesRoot.OpenSubKey(@"Applications\WinRar.exe\Shell\Open\Command"); the_Obj = the_Reg.GetValue(""); the_rar = the_Obj.ToString(); the_Reg.Close(); the_rar = the_rar.Substring(1, the_rar.Length - 7); the_Info = " X " + zipname + " " + zippath; the_StartInfo = new ProcessStartInfo(); the_StartInfo.FileName = the_rar; the_StartInfo.Arguments = the_Info; the_StartInfo.WindowStyle = ProcessWindowStyle.Hidden; the_Process = new Process(); the_Process.StartInfo = the_StartInfo; the_Process.Start(); } catch (Exception ex) { throw new Exception(ex.Message); } } }
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