SharpCompress压缩和解压缩，并解决压缩的中文乱码问题

一.下载SharpCompress库

二.解压缩

（1）不带密码

/// <summary>
        /// 解压缩(支持rar，zip)
        /// </summary>
        /// <param name="fromFilePath">待解压文件全路径</param>
        /// <param name="outFileDirectory">解压文件后目录</param>
        public static void Decompress(string fromFilePath, string outFileDirectory)
        {
            var archive = ArchiveFactory.Open(fromFilePath);
            foreach (var entry in archive.Entries)
            {
                if (!entry.IsDirectory)
                {
                    //Debug.WriteLine(entry.Key);
                    entry.WriteToDirectory(outFileDirectory, new ExtractionOptions { ExtractFullPath = true, Overwrite = true });
                }
            }
        }

（2）带密码

/// <summary>
        /// 解压缩加密的包(支持rar，zip)
        /// </summary>
        /// <param name="fromFilePath">待解压文件全路径</param>
        /// <param name="outFileDirectory">解压文件后目录</param>
        /// <param name="password">密码</param>
        public static void DecompressWithPwd(string fromFilePath, string outFileDirectory, string password)
        {
            using (var archive = ArchiveFactory.Open(fromFilePath, new ReaderOptions { Password = password }))
            {
                foreach (var entry in archive.Entries)
                {
                    if (!entry.IsDirectory)
                    {
                        //Debug.WriteLine(entry.Key);
                        entry.WriteToDirectory(outFileDirectory, new ExtractionOptions { ExtractFullPath = true, Overwrite = true });
                    }
                }
            }
        }

三.压缩

/// <summary>
        /// 压缩（zip格式）
        /// </summary>
        /// <param name="fromFileDirectory">待压缩目录</param>
        /// <param name="outFilePath">压缩后文全件路径</param>
        public static void ZipCompress(string fromFileDirectory, string outFilePath)
        {
            //解决中文乱码问题
            SharpCompress.Common.ArchiveEncoding ArchiveEncoding = new SharpCompress.Common.ArchiveEncoding();
            ArchiveEncoding.Default = Encoding.GetEncoding("utf-8");
            SharpCompress.Writers.WriterOptions options = new SharpCompress.Writers.WriterOptions(CompressionType.Deflate);
            options.ArchiveEncoding = ArchiveEncoding;

            using (var archive = ZipArchive.Create())
            {
                archive.AddAllFromDirectory(fromFileDirectory);
                using (var zip = File.OpenWrite(outFilePath))
                    archive.SaveTo(zip, options);
            }
        }

四.调用

//压缩
string fromFileDirectory = @"C:\test\我是目录";
string outFilePath = @"C:\压缩包1.zip";
CompressHelper.ZipCompress(fromFileDirectory, outFilePath);

//解压缩
string fromFilePath = @"C:\压缩包1.zip";
string outFileDirectory = @"C:\解压目录\压缩包1";
CompressHelper.Decompress(fromFilePath, outFileDirectory);

五.中文乱码问题

老版本直接加入下面一行代码就可以了

SharpCompress.Common.ArchiveEncoding.Default = Encoding.GetEncoding ("utf-8");

但是我使用的是0.23.0版本，.ArchiveEncoding已经从静态类改为普通类了，无法这样调用

参考：https://github.com/adamhathcock/sharpcompress/issues/268

最后发现：ArchiveEncoding类是OptionsBase的属性，而OptionsBase是WriterOptions的基类，ZipArchive的SaveTo方法带WriterOptions参数，那就ok了

参考：

wiki:https://github.com/adamhathcock/sharpcompress/wiki/API-Examples

支持类型：https://github.com/adamhathcock/sharpcompress/wiki/Supported-Formats

来源：oschina

链接：https://my.oschina.net/u/4381494/blog/3603309

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