'在c#中解压缩gz文件:System.IO.InvalidDataException:'使用不受支持的压缩方法压缩了存档条目. [英] Unzipping a gz file in c# : System.IO.InvalidDataException: 'The archive entry was compressed using an unsupported compression method.'

问题描述

我已经按照Microsoft推荐的方法来解压缩.gz文件:

I have followed Microsoft's recommended way to unzip a .gz file :

https://docs.microsoft.com/en-us/dotnet/api/system.io.compression.gzipstream?view=netcore-3.1

我正在尝试从CommonCrawl下载和解析文件.我可以成功下载它们，并使用7-zip解压缩它们.

I am trying to download and parse files from the CommonCrawl. I can successfully download them, and unzip them with 7-zip

但是，在C#中我得到了:

However, in c# I get:

System.IO.InvalidDataException:'存档条目已压缩使用不受支持的压缩方法.'

System.IO.InvalidDataException: 'The archive entry was compressed using an unsupported compression method.'

public static void Decompress(FileInfo fileToDecompress)
        {
            using (FileStream originalFileStream = fileToDecompress.OpenRead())
            {
                string currentFileName = fileToDecompress.FullName;
                string newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);

                using (FileStream decompressedFileStream = File.Create(newFileName))
                {
                    using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
                    {
                        decompressionStream.CopyTo(decompressedFileStream);
                        Console.WriteLine($"Decompressed: {fileToDecompress.Name}");
                    }
                }
            }
        }

文件从那里:

有人知道这个问题可能是什么吗?我需要一个特殊的图书馆吗?

Does anyone know what the problem could be? do I need a special library?

推荐答案

我不确定是什么问题，但是在阅读了这篇文章之后

I am not sure what the issue is but after reading this post

使用GZipStream解压缩仅返回第一行

我改为SharZipLib( http://www.icsharpcode.net/opensource/sharpziplib/)，并且有效

I changed to SharZipLib (http://www.icsharpcode.net/opensource/sharpziplib/) and it worked

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