Question

我需要列出Azure Blob文件名的名称。目前我能够列出所有带URL的文件，但我只需要列出名称。我想避免解析名称。能否请您查看我的以下代码和指南：

CloudStorageAccount backupStorageAccount = CloudStorageAccount.Parse(blobConectionString);

var backupBlobClient = backupStorageAccount.CreateCloudBlobClient();
var backupContainer = backupBlobClient.GetContainerReference(container);

var list = backupContainer.ListBlobs();

Answer 1

如果您正在使用 Windows Azure Storage 4.3.0 ，请尝试使用此代码。

List<string> blobNames = list.OfType<CloudBlockBlob>().Select(b => b.Name).ToList();

Answer 2

这是完成此任务的另一种方法：

CloudStorageAccount backupStorageAccount = CloudStorageAccount.Parse(blobConectionString);

var backupBlobClient = backupStorageAccount.CreateCloudBlobClient();
var backupContainer = backupBlobClient.GetContainerReference(container);

// useFlatBlobListing is true to ensure loading all files in
// virtual blob sub-folders as a plain list
var list = backupContainer.ListBlobs(useFlatBlobListing: true);
var listOfFileNames = new List<string>();

foreach (var blob in blobs) {
  var blobFileName = blob.Uri.Segments.Last();
  listOfFileNames.Add(blobFileName); 
}

return listOfFileNames;

来源：How to load list of Azure blob files recursively?

Answer 3

我们可以获得一些其他信息，例如尺寸，修改日期和名称。

CloudStorageAccount backupStorageAccount = CloudStorageAccount.Parse(YOUR_CON_STRING);

var backupBlobClient = backupStorageAccount.CreateCloudBlobClient();
var backupContainer = backupBlobClient.GetContainerReference("CONTAINER");


var blobs = backupContainer.ListBlobs().OfType<CloudBlockBlob>().ToList();

foreach (var blob in blobs)
{
    string bName = blob.Name;
    long bSize = blob.Properties.Length;
    string bModifiedOn = blob.Properties.LastModified.ToString();        
}

您也可以按名称下载特定文件。

 // Download file by Name
 string fileName = "Your_file_name";
 CloudBlockBlob blobFile = backupContainer.GetBlockBlobReference(fileName);
 blobFile.DownloadToFile(@"d:\"+ fileName, System.IO.FileMode.Create);

Answer 4

这可用于 WindowsAzure.Storage 9.3.3 。

CloudBlobClient cloudBlobClient = storageAccount.CreateCloudBlobClient();
var cloudBlobContainer = cloudBlobClient.GetContainerReference(containerName);

var blobResultSegment = await cloudBlobContainer.ListBlobsSegmentedAsync(continuationToken);
var blobs = blobResultSegment.Results.Select(i => i.Uri.Segments.Last()).ToList();

Answer 5

详细解答。

        // Parse the connection string and return a reference to the storage account.
        CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("AzureBlobConnectionString"));

        CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

        // Retrieve reference to a previously created container.
        CloudBlobContainer container = blobClient.GetContainerReference("container_name");

        // Retrieve reference to a blob named "test.csv"
        CloudBlockBlob blockBlob = container.GetBlockBlobReference("BlobName.tex");

        //Gets List of Blobs
        var list = container.ListBlobs();
        List<string> blobNames = list.OfType<CloudBlockBlob>().Select(b => b.Name).ToList();

Answer 6

您可以访问BlobProperties获取名称：

foreach (object o in list)
{
    BlobProperties bp = o as BlobProperties;
    if (bp != null)
    {
        BlobProperties p = _Container.GetBlobProperties(bp.Name);
        var name = p.Name; // get the name
    }
}

Answer 7

更新：

使用 Azure.Storage.Blobs v12 - 包获取 Azure blob 文件的名称列表

var storageConnectionString = "DefaultEndpointsProtocol=...........=core.windows.net";
var blobServiceClient = new BlobServiceClient(storageConnectionString);

//get container
var container = _blobServiceClient.GetBlobContainerClient("container_name");

List<string> blobNames = new List<string>();

//Enumerating the blobs may make multiple requests to the service while fetching all the values
//Blobs are ordered lexicographically by name
//if you want metadata set BlobTraits - BlobTraits.Metadata
var blobs = container.GetBlobsAsync(BlobTraits.None, BlobStates.None);
await foreach (var blob in blobs)
{
    blobNames.Add(blob.Name);
}

您可以找到更多选项和示例here。

这是 nuget 包的 link。

Answer 8

wal-g backup-fetch /home/postgres/pgdata/pgroot/data LATEST
INFO: 2019/12/19 10:06:24.765611 LATEST backup is: 'base_000000010000000000000003'
ERROR: 2019/12/19 10:06:25.062066 Failed to fetch backup: failed to fetch sentinel: context canceled

从文件列表中可以从天蓝色文件中获取所有文件

Answer 9

ListBlobs方法似乎不再存在。这是一个异步版本。

    public static async Task<List<string>> ListBlobNamesAsync(CloudBlobContainer container)
    {
        var blobs = await ListBlobsAsync(container);
        return blobs.Cast<CloudBlockBlob>().Select(b => b.Name).ToList();

        //Alternate version
        //return blobs.Select(b => b.Uri.ToString()).Select(s => s.Substring(s.LastIndexOf('/') + 1)).ToList();
    }

    public static async Task<List<IListBlobItem>> ListBlobsAsync(CloudBlobContainer container)
    {
        BlobContinuationToken continuationToken = null; //start at the beginning
        var results = new List<IListBlobItem>();
        do
        {
            var response = await container.ListBlobsSegmentedAsync(continuationToken);
            continuationToken = response.ContinuationToken;
            results.AddRange(response.Results);
        }

        while (continuationToken != null); //when this is null again, we've reached the end
        return results;
    }

Answer 10

我们必须使用ListBlobsSegmentedAsync()方法，然后我们可以通过以下代码找出blob：

public CloudBlockBlob GetLatestBlobByBlobNamePattern(CloudBlobContainer container, string blobNamePattern) 
        {
            var root = container.GetDirectoryReference(string.Empty);
            var blobsList = root.ListBlobsSegmentedAsync(null);
            blobsList.Wait();
            BlobResultSegment segment = blobsList.Result;
            List<IListBlobItem> list = new List<IListBlobItem>();
            list.AddRange(segment.Results);
            while (segment.ContinuationToken != null)
            {
                var blobs = container.ListBlobsSegmentedAsync(segment.ContinuationToken);
                blobs.Wait();
                segment = blobs.Result;
                list.AddRange(segment.Results);
            }
            var blob = list.Where(x => x.Uri.Segments.Last().Contains(blobNamePattern)).FirstOrDefault();
            return (CloudBlockBlob)blob;
        }

获取容器中Azure blob文件的名称列表？

10 个答案:

更新：