如何将 zip 文件解压缩到 azure 文件共享目录中

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我有一个带有 zip 文件的 Azure 文件共享目录，例如 abc.zip。
我想用 C# Azure 函数中的 C# 代码解压缩它。
我所拥有的是正确填充的 CloudFileDirectory。现在我想调用一个方法来解压缩此 Azure 文件共享目录中的文件。

该方法的名称为“public static async Task ExtractZipFileCloudStorageAsync(CloudFileDirectory extractDirectory)”并采用 1 个参数。

我尝试了很多代码，但似乎没有任何效果。我尝试的最后一个代码是尝试从 CloudFile 创建流。
代码行“using (var zipArchive = new ZipArchive(stream))”给了我一个错误(catch) =>“无法找到中央目录记录结尾。”

我做错了什么？

我尝试过的：

C＃

 public static async Task<ResultHelper> ExtractZipFileCloudStorageAsync(CloudFileDirectory extractDirectory)
 {
    try
    {
       var zipFiles = await extractDirectory.ListFilesAndDirectoriesSegmentedAsync(null);

    using (var httpClient = new HttpClient())
    {
        foreach (var zipFile in zipFiles.Results)
        {                        
            if (zipFile is CloudFile file && file.Uri.AbsoluteUri.EndsWith(".zip", StringComparison.OrdinalIgnoreCase))
            {                            
                var zipFileBytes = await GetMemoryStreamAsync(file);
                using (var stream = new MemoryStream(zipFileBytes.GetBuffer()))
                {
                    using (var zipArchive = new ZipArchive(stream))
                    {

                    }
                }
            }
        }

         return ...
     }
    catch (Exception ex)
    {
        return ...
    }
}
}

解决方案1

我重建了它，现在它可以工作了=>

C＃

public static class ExtractZipFileHelper
{        
    /// <summary>
    /// Extract zip file for Azure fileshare folders (cloud directory).
    /// </summary>
    /// <param name="extractDirectory"></param>
    /// <returns></returns>
    public static async Task<ResultHelper> ExtractZipFileCloudStorageAsync(CloudFileDirectory extractDirectory)
    {
        try
        {
            if (extractDirectory == null)
            {
                return ResultHelper.CreateResultHelper(false, "The parameter 'extractDirectory' is empty or NULL!");
            }
            
            return await ExtractZipFileAsync(extractDirectory);
        }
        catch (Exception ex)
        {
            return ResultHelper.CreateResultHelper(false, $"Error while extracting zip files: {ex.Message}");
        }
    }        

    /// <summary>
    /// Extract all zip files in the extractDirectory.
    /// </summary>
    /// <param name="extractDirectory"></param>
    /// <returns></returns>
    private static async Task<ResultHelper> ExtractZipFileAsync(CloudFileDirectory extractDirectory)
    {
        try
        {
            var filesAndDirectories = await extractDirectory.ListFilesAndDirectoriesSegmentedAsync(null);
            // Loop through all entries in the CloudFileDirectory.
            foreach (var item in filesAndDirectories.Results)
            {
                // Verify that the item is a CloudFile.
                if (item is CloudFile cloudFile)
                {
                    // Check if the item ends in '.zip'.
                    if (cloudFile.Name.EndsWith(".zip"))
                    {
                        // Create a MemoryStream for the contents of the zip file.
                        using (MemoryStream memoryStream = new MemoryStream())
                        {
                            // Download the contents of the zip file to the MemoryStream.
                            await cloudFile.DownloadToStreamAsync(memoryStream);

                            // Use a ZipArchive to read the contents of the zip file.
                            using (ZipArchive zipArchive = new ZipArchive(memoryStream))
                            {
                                // Walk through all entries in the zip file.
                                foreach (ZipArchiveEntry entry in zipArchive.Entries)
                                {
                                    // Get a reference to the CloudFile object for each entry.
                                    CloudFile entryFile = extractDirectory.GetFileReference(entry.FullName);

                                    // Create a MemoryStream for the entry content.
                                    using (MemoryStream entryStream = new MemoryStream())
                                    {
                                        // Open the entry in the zip file.
                                        using (Stream entryFileStream = entry.Open())
                                        {
                                            // Copy the entry content to the MemoryStream.
                                            await entryFileStream.CopyToAsync(entryStream);
                                        }

                                        entryStream.Position = 0;
                                        // Upload the contents to the corresponding CloudFile.
                                        await entryFile.UploadFromStreamAsync(entryStream);
                                    }
                                }
                            }
                        }
                    }
                }
            }

            return ResultHelper.CreateResultHelper(true);
        }
        catch (Exception ex)
        {
            return ResultHelper.CreateResultHelper(false, $"Error while extracting zip files: {ex.Message}");
        }
    }
}

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