.net文件压缩和解压及中文文件夹名称乱码问题

/**************************注释区域内为引用http://www.cnblogs.com/zhaozhan/archive/2012/05/28/2520701.html的博客内容

在.NET可以通过多种方式实现zip的压缩和解压:1、使用System.IO.Packaging;2、使用第三方类库;3、通过 System.IO.Compression 命名空间中新增的ZipArchive、ZipFile等类实现。

     一、使用System.IO.Packaging压缩和解压

     Package为一个抽象类,可用于将对象组织到定义的物理格式的单个实体中,从而实现可移植性与高效访问。ZIP 文件是Package的主物理格式。 其他Package实现可以使用其他物理格式(如 XML 文档、数据库或 Web 服务。与文件系统类似,在分层组织的文件夹和文件中引用 Package 中包含的项。虽然 Package 是抽象类,但 Package.Open 方法默认使用 ZipPackage 派生类。

    System.IO.Packaging在WindowsBase.dll程序集下,使用时需要添加对WindowsBase的引用。

 1、将整个文件夹压缩成zip

 

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/// <summary>

        /// Add a folder along with its subfolders to a Package

        /// </summary>

        /// <param name="folderName">The folder to add</param>

        /// <param name="compressedFileName">The package to create</param>

        /// <param name="overrideExisting">Override exsisitng files</param>

        /// <returns></returns>

        static bool PackageFolder(string folderName, string compressedFileName, bool overrideExisting)

        {

            if (folderName.EndsWith(@"\"))

                folderName = folderName.Remove(folderName.Length - 1);

            bool result = false;

            if (!Directory.Exists(folderName))

            {

                return result;

            }



            if (!overrideExisting && File.Exists(compressedFileName))

            {

                return result;

            }

            try

            {

                using (Package package = Package.Open(compressedFileName, FileMode.Create))

                {

                    var fileList = Directory.EnumerateFiles(folderName, "*", SearchOption.AllDirectories);

                    foreach (string fileName in fileList)

                    {

                       

                        //The path in the package is all of the subfolders after folderName

                        string pathInPackage;

                        pathInPackage = Path.GetDirectoryName(fileName).Replace(folderName, string.Empty) + "/" + Path.GetFileName(fileName);



                        Uri partUriDocument = PackUriHelper.CreatePartUri(new Uri(pathInPackage, UriKind.Relative));

                        PackagePart packagePartDocument = package.CreatePart(partUriDocument,"", CompressionOption.Maximum);

                        using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read))

                        {

                            fileStream.CopyTo(packagePartDocument.GetStream());

                        }

                    }

                }

                result = true;

            }

            catch (Exception e)

            {

                throw new Exception("Error zipping folder " + folderName, e);

            }

           

            return result;

        }
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 2、将单个文件添加到zip文件中

 

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/// <summary>

        /// Compress a file into a ZIP archive as the container store

        /// </summary>

        /// <param name="fileName">The file to compress</param>

        /// <param name="compressedFileName">The archive file</param>

        /// <param name="overrideExisting">override existing file</param>

        /// <returns></returns>

        static bool PackageFile(string fileName, string compressedFileName, bool overrideExisting)

        {

            bool result = false;



            if (!File.Exists(fileName))

            {

                return result;

            }



            if (!overrideExisting && File.Exists(compressedFileName))

            {

                return result;

            }



            try

            {

                Uri partUriDocument = PackUriHelper.CreatePartUri(new Uri(Path.GetFileName(fileName), UriKind.Relative));

               

                using (Package package = Package.Open(compressedFileName, FileMode.OpenOrCreate))

                {

                    if (package.PartExists(partUriDocument))

                    {

                        package.DeletePart(partUriDocument);

                    } 



                    PackagePart packagePartDocument = package.CreatePart(partUriDocument, "", CompressionOption.Maximum);

                    using (FileStream fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read))

                    {

                        fileStream.CopyTo(packagePartDocument.GetStream());

                    }

                }

                result = true;

            }

            catch (Exception e)

            {

                throw new Exception("Error zipping file " + fileName, e);

            }

            

            return result;

        }
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3、zip文件解压

 

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/// <summary>

        /// Extract a container Zip. NOTE: container must be created as Open Packaging Conventions (OPC) specification

        /// </summary>

        /// <param name="folderName">The folder to extract the package to</param>

        /// <param name="compressedFileName">The package file</param>

        /// <param name="overrideExisting">override existing files</param>

        /// <returns></returns>

        static bool UncompressFile(string folderName, string compressedFileName, bool overrideExisting)

        {

            bool result = false;

            try

            {

                if (!File.Exists(compressedFileName))

                {

                    return result;

                }



                DirectoryInfo directoryInfo = new DirectoryInfo(folderName);

                if (!directoryInfo.Exists)

                    directoryInfo.Create();



                using (Package package = Package.Open(compressedFileName, FileMode.Open, FileAccess.Read))

                {

                    foreach (PackagePart packagePart in package.GetParts())

                    {

                        ExtractPart(packagePart, folderName, overrideExisting);

                    }

                }



                result = true;

            }

            catch (Exception e)

            {

                throw new Exception("Error unzipping file " + compressedFileName, e);

            }

            

            return result;

        }



        static void ExtractPart(PackagePart packagePart, string targetDirectory, bool overrideExisting)

        {

            string stringPart = targetDirectory + HttpUtility.UrlDecode(packagePart.Uri.ToString()).Replace('\\', '/');



            if (!Directory.Exists(Path.GetDirectoryName(stringPart)))

                Directory.CreateDirectory(Path.GetDirectoryName(stringPart));



            if (!overrideExisting && File.Exists(stringPart))

                return;

            using (FileStream fileStream = new FileStream(stringPart, FileMode.Create))

            {

                packagePart.GetStream().CopyTo(fileStream);

            }

        }
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 使用Package压缩文件会在zip文件自动生成[Content_Type].xml,用来描述zip文件解压支持的文件格式。

 

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<?xml version="1.0" encoding="utf-8" ?> 

<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">

    <Default Extension="vsixmanifest" ContentType="text/xml" /> 

    <Default Extension="dll" ContentType="application/octet-stream" /> 

    <Default Extension="png" ContentType="application/octet-stream" /> 

    <Default Extension="txt" ContentType="text/plain" /> 

    <Default Extension="pkgdef" ContentType="text/plain" /> 

</Types>
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同样,如果zip文件不包含[Content_Type].xml文件,或者[Content_Type].xml文件不包含所对应扩展名的描述(手动添加的[Content_Type].xml也是可以),将无法解压文件。

      二、使用第三方类库

      zip的压缩和解压使用比较的有SharpZipLibDotNetZip

      1、SharpZipLib,也称为“#ziplib”,基于GPL开源,支持Zip,GZip,Tar和BZip2的压缩和解压缩。

      支持.NET 1.1,NET 2.0(3.5、4.0).

      (1)zip压缩

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public static void Zip(string SrcFile, string DstFile, int BufferSize)

{

    FileStream fileStreamIn = new FileStream

        (SrcFile, FileMode.Open, FileAccess.Read);

    FileStream fileStreamOut = new FileStream

        (DstFile, FileMode.Create, FileAccess.Write);

    ZipOutputStream zipOutStream = new ZipOutputStream(fileStreamOut);

    byte[] buffer = new byte<buffersize />;

    ZipEntry entry = new ZipEntry(Path.GetFileName(SrcFile));

    zipOutStream.PutNextEntry(entry);

    int size;

    do

    {

        size = fileStreamIn.Read(buffer, 0, buffer.Length);

        zipOutStream.Write(buffer, 0, size);

    } while (size > 0);

    zipOutStream.Close();

    fileStreamOut.Close();

    fileStreamIn.Close();

}
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(2)解压zip

 

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public static void UnZip(string SrcFile, string DstFile, int BufferSize)

{

    FileStream fileStreamIn = new FileStream

        (SrcFile, FileMode.Open, FileAccess.Read);

    ZipInputStream zipInStream = new ZipInputStream(fileStreamIn);

    ZipEntry entry = zipInStream.GetNextEntry();

    FileStream fileStreamOut = new FileStream

        (DstFile + @"\" + entry.Name, FileMode.Create, FileAccess.Write);

    int size;

    byte[] buffer = new byte<buffersize />;

    do

    {

        size = zipInStream.Read(buffer, 0, buffer.Length);

        fileStreamOut.Write(buffer, 0, size);

    } while (size > 0);

    zipInStream.Close();

    fileStreamOut.Close();

    fileStreamIn.Close();

}
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2、DotNetLib,是基于”WS-PL”开源,使用比较简单
     (1)压缩

 

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using (ZipFile zip = new ZipFile())

  {

    zip.AddFile("ReadMe.txt");

    zip.AddFile("7440-N49th.png");

    zip.AddFile("2008_Annual_Report.pdf");        

    zip.Save("Archive.zip");

  }
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(2)解压

 

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private void MyExtract()

  {

      string zipToUnpack = "C1P3SML.zip";

      string unpackDirectory = "Extracted Files";

      using (ZipFile zip1 = ZipFile.Read(zipToUnpack))

      {

          // here, we extract every entry, but we could extract conditionally

          // based on entry name, size, date, checkbox status, etc.  

          foreach (ZipEntry e in zip1)

          {

            e.Extract(unpackDirectory, ExtractExistingFileAction.OverwriteSilently);

          }

       }

    }
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三、在.NET 4.5使用ZipArchive、ZipFile等类压缩和解压

 

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   static void Main(string[] args)

        {

            string ZipPath = @"c:\users\exampleuser\start.zip";

            string ExtractPath = @"c:\users\exampleuser\extract";

            string NewFile = @"c:\users\exampleuser\NewFile.txt";



            using (ZipArchive Archive = ZipFile.Open(ZipPath, ZipArchiveMode.Update))

            {

                Archive.CreateEntryFromFile(NewFile, "NewEntry.txt");

                Archive.ExtractToDirectory(ExtractPath);

            } 

        }
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***************************/

博主本次用的压缩方法是引用了using Ionic.Zip;

下载地址http://dotnetzip.codeplex.com/

主要解决的问题就是压缩之后中文文件夹名称乱码

具体代码如下 :

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//待压缩的文件夹路径

string path1 = @"D:\zhai\办公室";

 //System.Text.Encoding.Default解决中文文件夹名称乱码

using (ZipFile zf = new ZipFile(System.Text.Encoding.Default))

            {

                zf.AddDirectory(path1);

                //压缩之后保存路径及压缩文件名

                zf.Save(@"D:\zhai\11.zip");

            }
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