How to get all files from a directory in Azure BLOB using ListBlobsSegmentedAsync(如何使用 ListBlobsSegmentedAsync 从 Azure BLOB 中的目录中获取所有文件)

本文介绍了如何使用 ListBlobsSegmentedAsync 从 Azure BLOB 中的目录中获取所有文件的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

While trying to access all files of the Azure blob folder, getting sample code for container.ListBlobs(); however it looks like an old one.

Old Code : container.ListBlobs();

New Code trying : container.ListBlobsSegmentedAsync(continuationToken);

I am trying to use the below code : 

container.ListBlobsSegmentedAsync(continuationToken);

Folders are like :

Container/F1/file.json
Container/F1/F2/file.json
Container/F2/file.json

Looking for the updated version to get all files from an Azure folder. Any sample code would help, thanks!

解决方案

Update: Getting all files name from a directory with Azure.Storage.Blobs v12 - Package

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 blobHierarchyItems = container.GetBlobsByHierarchyAsync(BlobTraits.None, BlobStates.None, "/");

await foreach (var blobHierarchyItem in blobHierarchyItems)
{
   //check if the blob is a virtual directory.
   if (blobHierarchyItem.IsPrefix)
   {        
      // You can also access files under nested folders in this way,
      // of course you will need to create a function accordingly (you can do a recursive function)
      // var prefix = blobHierarchyItem.Name;
      // blobHierarchyItem.Name = "folderA"
      // var blobHierarchyItems= container.GetBlobsByHierarchyAsync(BlobTraits.None, BlobStates.None, "/", prefix);     
    }
    else
    {
        blobNames.Add(blobHierarchyItem.Blob.Name);
    }    
}

There are more option and example you can find it here.

This is the link to the nuget package.

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