SevenZipSharp - 如何使用c#将多个目录压缩为单个文件？

Question

我想使用SevenZipCompressor将3个文件夹压缩到一个文件中.我知道如何压缩单个文件夹.这样的事可能吗？

谢谢 !

Answer 1

的SevenZipCompressor类提供一个调用的方法CompressFileDictionary().其中一个方法重载需要文件字典和文件流.文件字典是普通的.Net Dictionary<string,string>.字典的关键字是存档中文件的名称(或相对路径),字典的值是文件系统中文件的路径.

字典的关键字允许您控制7z存档中的结构.例如,如果要压缩三个文件夹

c:\temp\testdir1
             |- file1.txt
             |- file2.txt
c:\temp\testdir2
             |- file1.txt
c:\temp2\test
             |- file3.txt

并且归档中的结果应该是

testdir1
       |- file1.txt
       |- file2.txt
testdir2
       |- file1.txt
    test
       |-file3.txt

然后以下列方式将文件添加到dictonary:

Dictionary<string, string> filesDic = new Dictionary<string, string>();

filesDic.Add(@"testdir1\file1.txt", @"c:\temp\testdir1\files1.txt");
filesDic.Add(@"testdir1\file2.txt", @"c:\temp\testdir1\files2.txt");
filesDic.Add(@"testdir2\file1.txt", @"c:\temp\testdir2\files1.txt");
filesDic.Add(@"test\file3.txt", @"c:\temp2\test\files3.txt");

下面的示例演示了如何自动化为文件夹创建此类字典的过程,并将其压缩为单个7z存档文件.

private static void AddFilesFromDirectoryToDictionary(Dictionary<string, string> filesDictionary,
  string pathToDirectory)
{      
  DirectoryInfo dirInfo = new DirectoryInfo(pathToDirectory);      

  FileInfo[] fileInfos = dirInfo.GetFiles("*.*", SearchOption.AllDirectories);

  foreach (FileInfo fi in fileInfos)
  {        
    filesDictionary.Add(fi.FullName.Replace(dirInfo.Parent.FullName + "\\", "").ToLower(),
      fi.FullName);
  }        
}

static void Main(string[] args)
{
  // Set path to 7z library.
  SevenZipCompressor.SetLibraryPath("7z.dll");

  using (FileStream fs = new FileStream("c:\\temp\\test.7z", FileMode.Create))
  {        
    SevenZipCompressor szc = new SevenZipCompressor
                                 {
                                   CompressionMethod = CompressionMethod.Lzma,
                                   CompressionLevel = CompressionLevel.Normal,
                                   CompressionMode = CompressionMode.Create,                                      
                                   DirectoryStructure = true,
                                   PreserveDirectoryRoot = false,
                                   ArchiveFormat = OutArchiveFormat.SevenZip
                                 };        

    Dictionary<string, string> filesDictionary = new Dictionary<string, string>();

    AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp\testdir1");
    AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp\testdir2");
    AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp2\test");

    szc.CompressFileDictionary(filesDictionary, fs);                               
  }      
}

您还可以使用以下代码更改创建ZIP存档:

using (FileStream fs = new FileStream("c:\\temp\\test.zip", FileMode.Create))
{        
  SevenZipCompressor szc = new SevenZipCompressor
          {
            CompressionMethod = CompressionMethod.Deflate,
            CompressionLevel = CompressionLevel.Normal,
            CompressionMode = CompressionMode.Create,                                      
            DirectoryStructure = true,
            PreserveDirectoryRoot = false,
            ArchiveFormat = OutArchiveFormat.Zip
          };        

   Dictionary<string, string> filesDictionary = new Dictionary<string, string>();

   AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp\testdir1");
   AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp\testdir2");
   AddFilesFromDirectoryToDictionary(filesDictionary, @"c:\temp2\test");

   szc.CompressFileDictionary(filesDictionary, fs);                               
 }