SevenZipSharp-如何使用c#将多个目录压缩到一个文件中

Question

我想使用SevenZipCompressor将3个文件夹压缩到一个文件中。我知道如何压缩一个文件夹。这样的事情可能吗？？

谢谢！

Answer 1

SevenZipCompressor类提供了一个名为CompressFileDictionary()的方法。其中一个方法重载需要一个文件字典和一个文件流。文件字典是一个普通的.Net Dictionary<string,string>。字典的关键字是中文件的名称（或相对路径）档案，字典的值是文件系统中文件的路径。

字典的键允许您控制7z档案中的结构。例如，如果你想压缩三个文件夹

c:temptestdir1
             |- file1.txt
             |- file2.txt
c:temptestdir2
             |- file1.txt
c:temp2test
             |- file3.txt

档案中的结果结构应该是

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

然后按照以下方式将文件添加到dictionary中：

Dictionary<string, string> filesDic = new Dictionary<string, string>();
filesDic.Add(@"testdir1file1.txt", @"c:temptestdir1files1.txt");
filesDic.Add(@"testdir1file2.txt", @"c:temptestdir1files2.txt");
filesDic.Add(@"testdir2file1.txt", @"c:temptestdir2files1.txt");
filesDic.Add(@"testfile3.txt", @"c:temp2testfiles3.txt");

下面的例子只是展示了如何自动创建这样一个用于文件夹的字典，并将其压缩为一个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:temptestdir1");
    AddFilesFromDirectoryToDictionary(filesDictionary, @"c:temptestdir2");
    AddFilesFromDirectoryToDictionary(filesDictionary, @"c:temp2test");
    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:temptestdir1");
   AddFilesFromDirectoryToDictionary(filesDictionary, @"c:temptestdir2");
   AddFilesFromDirectoryToDictionary(filesDictionary, @"c:temp2test");
   szc.CompressFileDictionary(filesDictionary, fs);                               
 }