.net - GZip 压缩(通过 .net)会增加文件大小吗？

Question

我使用 .Net 的 GZipStream 类跟踪我正在压缩的文件的原始大小，我认为我正在压缩的文件似乎增加了大小。这可能吗？

这就是我进行压缩的方式:

Byte[] bytes = GetFileBytes(file);

using (FileStream fileStream = new FileStream("Zipped.gz", FileMode.Create))
{
    using (GZipStream zipStream = new GZipStream(fileStream, CompressionMode.Compress))
    {
        zipStream.Write(bytes, 0, bytes.Length);
    }
}

Answer 1

是的，它可以。已经fixed in .NET 4 .

The compression algorithms for the System.IO.Compression..::.DeflateStream and System.IO.Compression..::.GZipStream classes have improved so that data that is already compressed is no longer inflated. This results in much better compression ratios. Also, the 4-gigabyte size restriction for compressing streams has been removed.

检查:GZipStream/DeflateStream increase file size on compression

另请在此处查看 SO:GZipStream and DeflateStream produce bigger files