在项目中往往使用解压缩公共类，解压缩之后的文件占用空间小，也可进行加密，往往可以用于客户端上传附件，打包输出主程序等，其中的好处就不多说了，最近着手的项目中多次使用到了解压缩方法，现较流行的就是ICSharpCode，稳定，高效，是一个不错的解压缩封装类。通过InterNET和个人的整理，现将该类分享出来，作为资源分享给大家，这样就可以不用在埋头苦脑的在InterNET上苦苦寻找了，废话不多说，上代码：
1 using System; 2 using System.Collections.Generic; 3 using System.IO; 4 using System.Security.Cryptography; 5 using ICSharpCode.SharpZipLib.Core; 6 using ICSharpCode.SharpZipLib.Zip; 7 8 namespace Helper 9 { 10 public class Utily 11 { 12 ///13 /// 快速压缩 14 /// 15 /// 需要压缩的文件夹路径 16 /// 输出路径 17 /// 密码，可不写 18 /// 过滤条件 19 /// 是否压缩空文件夹 20 /// 处理进程 21 /// 触发的秒数 22 /// 完成事件 23 public static void CreateZipFile(string filesPath, string zipFilePath, string pwd, string fileFilter, bool CreateEmptyDirectories, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun) 24 { 25 FastZipEvents events = new FastZipEvents(); 26 if (progressFun != null) 27 { 28 events.Progress = progressFun; 29 events.ProgressInterval = TimeSpan.FromSeconds(seconds); 30 } 31 if (completeFun != null) 32 { 33 events.CompletedFile = completeFun; 34 } 35 FastZip zip = new FastZip(events); 36 zip.CreateEmptyDirectories = CreateEmptyDirectories; 37 if (!string.IsNullOrEmpty(pwd)) 38 zip.Password = pwd; 39 zip.UseZip64 = UseZip64.On; 40 zip.RestoreAttributesOnExtract = true; 41 zip.RestoreDateTimeOnExtract = true; 42 zip.CreateZip(zipFilePath, filesPath, true, fileFilter); 43 } 44 45 /// 46 /// 快速解压 47 /// 48 /// 压缩文件路径 49 /// 解压路径 50 /// 压缩密码 51 /// 进程 52 /// 触发时间 53 public static void ExtractZipFile(string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds) 54 { 55 FastZipEvents events = new FastZipEvents(); 56 if (progressFun != null) 57 { 58 events.Progress = progressFun; 59 events.ProgressInterval = TimeSpan.FromSeconds(seconds); 60 } 61 FastZip zip = new FastZip(events); 62 63 zip.CreateEmptyDirectories = true; 64 if (!string.IsNullOrEmpty(pwd)) 65 zip.Password = pwd; 66 zip.UseZip64 = UseZip64.On; 67 zip.RestoreAttributesOnExtract = true; 68 zip.RestoreDateTimeOnExtract = true; 69 zip.ExtractZip(zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true); 70 } 71 72 /// 73 /// 快速解压 74 /// 75 /// 压缩文件路径 76 /// 解压路径 77 /// 密码 78 /// 进程 79 /// 触发时间 80 /// 压缩过程中执行的函数 81 public static void ExtractZipFile(string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun) 82 { 83 FastZipEvents events = new FastZipEvents(); 84 if (progressFun != null) 85 { 86 events.Progress = progressFun; 87 events.ProgressInterval = TimeSpan.FromSeconds(seconds); 88 } 89 if (completeFun != null) 90 { 91 events.CompletedFile = completeFun; 92 } 93 FastZip zip = new FastZip(events); 94 95 zip.CreateEmptyDirectories = true; 96 if (!string.IsNullOrEmpty(pwd)) 97 zip.Password = pwd; 98 zip.UseZip64 = UseZip64.On; 99 zip.RestoreAttributesOnExtract = true; 100 zip.RestoreDateTimeOnExtract = true; 101 zip.ExtractZip(zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true); 102 } 103 104 /// 105 /// 获得压缩包内原文件总大小 106 /// 107 /// 108 /// 109 /// 110 /// 111 public static long GetZipFileSize(string fileName, string fileFilter, string directoryFilter) 112 { 113 long b = 0; 114 using (ZipFile zipFile = new ZipFile(fileName)) 115 { 116 PathFilter localFileFilter = new PathFilter(fileFilter); 117 PathFilter localDirFilter = new PathFilter(directoryFilter); 118 119 if (zipFile.Count == 0) 120 { 121 return 0; 122 } 123 for (int i = 0; i < zipFile.Count; ++i) 124 { 125 ZipEntry e = zipFile[i]; 126 if (e.IsFile) 127 { 128 string path = Path.GetDirectoryName(e.Name); 129 if (localDirFilter.IsMatch(path)) 130 { 131 if (localFileFilter.IsMatch(Path.GetFileName(e.Name))) 132 { 133 b += e.Size; 134 } 135 } 136 } 137 } 138 } 139 return b; 140 } 141 142 /// 143 /// 获得MD5校验码 144 /// 145 /// 146 /// 147 public static string GetMD5(string filepath) 148 { 149 string returnStr = ""; 150 FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read); 151 MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider(); 152 byte[] md5byte = md5.ComputeHash(fs); 153 int i, j; 154 foreach (byte b in md5byte) 155 { 156 i = Convert.ToInt32(b); 157 j = i >> 4; 158 returnStr += Convert.ToString(j, 16); 159 j = ((i << 4) & 0x00ff) >> 4; 160 returnStr += Convert.ToString(j, 16); 161 } 162 fs.Dispose(); 163 return returnStr; 164 } 165 166 /// 167 /// 解压缩特定文件名的文件 168 /// 169 /// 文件路径 170 /// 解压缩路径 171 /// 文件名称 172 /// 解压缩包密码 173 public static void ZipToFile(string path, string addres, string zipFileName, string pwd) 174 { 175 ZipInputStream ZipStream = new ZipInputStream(System.IO.File.OpenRead(path)); 176 if (!string.IsNullOrEmpty(pwd)) 177 ZipStream.Password = pwd; 178 ZipEntry fileEntry; 179 while ((fileEntry = ZipStream.GetNextEntry()) != null) 180 { 181 string filename = Path.GetFileName(fileEntry.Name); 182 if (filename == zipFileName) 183 { 184 filename = addres + "\\" + filename; 185 FileStream streamWriter = System.IO.File.Create(filename); 186 int size = (int)fileEntry.Size; 187 byte[] buffer = new byte[size]; 188 189 size = ZipStream.Read(buffer, 0, size); 190 streamWriter.Write(buffer, 0, size); 191 streamWriter.Close(); 192 } 193 } 194 ZipStream.Close(); 195 } 196 } 197 }
该类能够满足基本常用解压缩的方法了，不过现比较流行的应该是7z压缩，这个也在研究中，以上代码若有不正确的地方，也请各位大牛指正。至于ICSharpCode的DLL文件，网上能够下载的地方也很多，我也就不在给出下载地址了。
温馨提醒：在引用ICSharpCode时记的在调用此类方法的类库或应用程序上也要引用ICSharpCode，否则会产生错误。
今天就分享这么多吧。
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