《ICSharpCode快速解压缩帮助类》——即粘即用

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：

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Security.Cryptography;
 using ICSharpCode.SharpZipLib.Core;
 using ICSharpCode.SharpZipLib.Zip;

 namespace Helper
 {
     public class Utily
     {
         /// <summary>
         /// 快速压缩
         /// </summary>
         /// <param name="filesPath">需要压缩的文件夹路径</param>
         /// <param name="zipFilePath">输出路径</param>
         /// <param name="pwd">密码，可不写</param>
         /// <param name="fileFilter">过滤条件</param>
         /// <param name="CreateEmptyDirectories">是否压缩空文件夹</param>
         /// <param name="progressFun">处理进程</param>
         /// <param name="seconds">触发的秒数</param>
         /// <param name="completeFun">完成事件</param>
         public static void CreateZipFile(string filesPath, string zipFilePath, string pwd, string fileFilter, bool CreateEmptyDirectories, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun)
         {
             FastZipEvents events = new FastZipEvents();
             if (progressFun != null)
             {
                 events.Progress = progressFun;
                 events.ProgressInterval = TimeSpan.FromSeconds(seconds);
             }
             if (completeFun != null)
             {
                 events.CompletedFile = completeFun;
             }
             FastZip zip = new FastZip(events);
             zip.CreateEmptyDirectories = CreateEmptyDirectories;
             if (!string.IsNullOrEmpty(pwd))
                 zip.Password = pwd;
             zip.UseZip64 = UseZip64.On;
             zip.RestoreAttributesOnExtract = true;
             zip.RestoreDateTimeOnExtract = true;
             zip.CreateZip(zipFilePath, filesPath, true, fileFilter);
         }

         /// <summary>
         /// 快速解压
         /// </summary>
         /// <param name="zipFilePath">压缩文件路径</param>
         /// <param name="extractPath">解压路径</param>
         /// <param name="pwd">压缩密码</param>
         /// <param name="progressFun">进程</param>
         /// <param name="seconds">触发时间</param>
         public static void ExtractZipFile(string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds)
         {
             FastZipEvents events = new FastZipEvents();
             if (progressFun != null)
             {
                 events.Progress = progressFun;
                 events.ProgressInterval = TimeSpan.FromSeconds(seconds);
             }
             FastZip zip = new FastZip(events);

             zip.CreateEmptyDirectories = true;
             if (!string.IsNullOrEmpty(pwd))
                 zip.Password = pwd;
             zip.UseZip64 = UseZip64.On;
             zip.RestoreAttributesOnExtract = true;
             zip.RestoreDateTimeOnExtract = true;
             zip.ExtractZip(zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true);
         }

         /// <summary>
         /// 快速解压
         /// </summary>
         /// <param name="zipFilePath">压缩文件路径</param>
         /// <param name="extractPath">解压路径</param>
         /// <param name="pwd">密码</param>
         /// <param name="progressFun">进程</param>
         /// <param name="seconds">触发时间</param>
         /// <param name="completeFun">压缩过程中执行的函数</param>
         public static void ExtractZipFile(string zipFilePath, string extractPath, string pwd, ProgressHandler progressFun, double seconds, CompletedFileHandler completeFun)
         {
             FastZipEvents events = new FastZipEvents();
             if (progressFun != null)
             {
                 events.Progress = progressFun;
                 events.ProgressInterval = TimeSpan.FromSeconds(seconds);
             }
             if (completeFun != null)
             {
                 events.CompletedFile = completeFun;
             }
             FastZip zip = new FastZip(events);

             zip.CreateEmptyDirectories = true;
             if (!string.IsNullOrEmpty(pwd))
                 zip.Password = pwd;
             zip.UseZip64 = UseZip64.On;
             zip.RestoreAttributesOnExtract = true;
             zip.RestoreDateTimeOnExtract = true;
             zip.ExtractZip(zipFilePath, extractPath, FastZip.Overwrite.Always, null, "", "", true);
         }

         /// <summary>
         /// 获得压缩包内原文件总大小
         /// </summary>
         /// <param name="fileName"></param>
         /// <param name="fileFilter"></param>
         /// <param name="directoryFilter"></param>
         /// <returns></returns>
         public static long GetZipFileSize(string fileName, string fileFilter, string directoryFilter)
         {
             long b = ;
             using (ZipFile zipFile = new ZipFile(fileName))
             {
                 PathFilter localFileFilter = new PathFilter(fileFilter);
                 PathFilter localDirFilter = new PathFilter(directoryFilter);

                 if (zipFile.Count == )
                 {
                     return ;
                 }
                 for (int i = ; i < zipFile.Count; ++i)
                 {
                     ZipEntry e = zipFile[i];
                     if (e.IsFile)
                     {
                         string path = Path.GetDirectoryName(e.Name);
                         if (localDirFilter.IsMatch(path))
                         {
                             if (localFileFilter.IsMatch(Path.GetFileName(e.Name)))
                             {
                                 b += e.Size;
                             }
                         }
                     }
                 }
             }
             return b;
         }

         /// <summary>
         /// 获得MD5校验码
         /// </summary>
         /// <param name="filepath"></param>
         /// <returns></returns>
         public static string GetMD5(string filepath)
         {
             string returnStr = "";
             FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read);
             MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
             byte[] md5byte = md5.ComputeHash(fs);
             int i, j;
             foreach (byte b in md5byte)
             {
                 i = Convert.ToInt32(b);
                 j = i >> ;
                 returnStr += Convert.ToString(j, );
                 j = ((i << ) & 0x00ff) >> ;
                 returnStr += Convert.ToString(j, );
             }
             fs.Dispose();
             return returnStr;
         }

         /// <summary>
         /// 解压缩特定文件名的文件
         /// </summary>
         /// <param name="path">文件路径</param>
         /// <param name="addres">解压缩路径</param>
         /// <param name="zipFileName">文件名称</param>
         /// <param name="pwd">解压缩包密码</param>
         public static void ZipToFile(string path, string addres, string zipFileName, string pwd)
         {
             ZipInputStream ZipStream = new ZipInputStream(System.IO.File.OpenRead(path));
             if (!string.IsNullOrEmpty(pwd))
                 ZipStream.Password = pwd;
             ZipEntry fileEntry;
             while ((fileEntry = ZipStream.GetNextEntry()) != null)
             {
                 string filename = Path.GetFileName(fileEntry.Name);
                 if (filename == zipFileName)
                 {
                     filename = addres + "\\" + filename;
                     FileStream streamWriter = System.IO.File.Create(filename);
                     int size = (int)fileEntry.Size;
                     byte[] buffer = new byte[size];

                     size = ZipStream.Read(buffer, , size);
                     streamWriter.Write(buffer, , size);
                     streamWriter.Close();
                 }
             }
             ZipStream.Close();
         }
     }
 }

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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　　本文由Tom原创并发布于博客园，欢迎转载，未经本人同意必须保留此段声明（否则保留追究责任的权利），且在文章页面明显位置给出原文链接，如有问题，可以通过419187544@qq.com 联系我，非常感谢。