c# - SharpZipLib 库压缩一个文件夹与子文件夹具有高水平的压缩和高效的时间

Question

我使用了许多现有代码，并尝试以多种方式压缩文件夹，但我仍然遇到时间和文件夹大小(仍然大约相同大小)的问题。此代码来自库的源代码，但仍然没有给出想要的结果

static void Main(string[] args)
{
    //copyDirectory(@"C:\x", @"D:\1");
    ZipOutputStream zip = new ZipOutputStream(File.Create(@"d:\2.zip"));

    zip.SetLevel(9);

    string folder = @"D:\music";

    ZipFolder(folder, folder, zip);
    zip.Finish();
    zip.Close();
}

public static void ZipFolder(string RootFolder, string CurrentFolder, ZipOutputStream zStream)
{
    string[] SubFolders = Directory.GetDirectories(CurrentFolder);

    foreach (string Folder in SubFolders)
        ZipFolder(RootFolder, Folder, zStream);

    string relativePath = CurrentFolder.Substring(RootFolder.Length) + "/";

    if (relativePath.Length > 1)
    {
        ZipEntry dirEntry;

        dirEntry = new ZipEntry(relativePath);
        dirEntry.DateTime = DateTime.Now;
    }

    foreach (string file in Directory.GetFiles(CurrentFolder))
    {
        AddFileToZip(zStream, relativePath, file);
    }
}

private static void AddFileToZip(ZipOutputStream zStream, string relativePath, string file)
{
    byte[] buffer = new byte[4096];
    string fileRelativePath = (relativePath.Length > 1 ? relativePath : string.Empty) + Path.GetFileName(file);
    ZipEntry entry = new ZipEntry(fileRelativePath);

    entry.DateTime = DateTime.Now;
    zStream.PutNextEntry(entry);

    using (FileStream fs = File.OpenRead(file))
    {
        int sourceBytes;

        do
        {
            sourceBytes = fs.Read(buffer, 0, buffer.Length);
            zStream.Write(buffer, 0, sourceBytes);
        } while (sourceBytes > 0);
    }
}

Answer 1

string folder = @"D:\music";

如果您正在尝试压缩 MP3 文件，您将不会看到太多压缩。

无论如何，压缩算法的作用是有限的。而且更多的压缩总是需要更多的时间。