正在获取容器中Azure blob文件的名称列表

本文关键字:文件 列表 blob Azure 获取 | 更新日期: 2023-09-27 18:02:05

我需要列出Azure Blob文件名的名称。目前我可以列出所有带有URL的文件,但我只需要名称列表。我想避免解析名称。你能看看我下面的代码和指南吗:

CloudStorageAccount backupStorageAccount = CloudStorageAccount.Parse(blobConectionString);
var backupBlobClient = backupStorageAccount.CreateCloudBlobClient();
var backupContainer = backupBlobClient.GetContainerReference(container);
var list = backupContainer.ListBlobs();

正在获取容器中Azure blob文件的名称列表

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

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

还有一种方法可以做到这一点:

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:如何递归加载Azure blob文件列表?

我们可以获得一些附加信息,如大小、修改日期名称

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();        
}

您还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);

完整答案及详细信息。

        // 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();

这适用于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();

更新:

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

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);
}

你可以在这里找到更多的选项和示例。

这是指向nuget包的链接。

ListBlobs方法似乎不再存在。这是一个异步验证。

    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;
    }

您可以访问BlobProperties以获得名称:

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
    }
}
  CloudStorageAccount storageAccount = CloudStorageAccount.Parse(CloudConfigurationManager.GetSetting("StorageConnectionString"));
   CloudFileClient fileClient = storageAccount.CreateCloudFileClient();
    CloudFileShare share = fileClient.GetShareReference(ConfigurationManager.AppSettings["ShareReference"]);
    if (share.Exists())
    {
          CloudFileDirectory rootDir = share.GetRootDirectoryReference();
          CloudFileDirectory sampleDir = rootDir.GetDirectoryReference("paths");
          if (sampleDir.Exists())
          {
                IEnumerable<IListFileItem> fileList = sampleDir.ListFilesAndDirectories();
                 //CloudFile file = sampleDir.GetFileReference(FileName + ext);
                 //return file;
           }
           return null;
      }

从fileList可以从azure文件中获取所有文件

我们必须使用ListBlobsSegmentedAsync()方法,然后我们可以通过以下代码找到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;
        }