在给定url文件夹路径的情况下从azure存储获取文件名

Question

For starters, yes I know there are no "real" folders in Azure storage, but given a url path to an image of

https://myazurestorage.blob.core.windows.net/accessibleimages/folder/folder/myimage.JPG

Is there a method to generate the list of filenames by passing in the base url of

https://myazurestorage.blob.core.windows.net/accessibleimages/folder/folder/

I can't seem to find any reference to one. I can get a list of blobs, but they are the base "folders" in the containers but I need to drill deeper to get the specific filenames.

Answer 1

Here's how you can do this:
1. Create blob client:

var account = new CloudStorageAccount(new StorageCredentials("myazurestorage", YOUR_API_KEY), true);
var blobClient = account.CreateCloudBlobClient();  

2. Get container:

var container = blobClient.GetContainerReference("acessibleimages");

3. Use ListBlobs like this (read more about flat blob listing ):

var blobList= container.ListBlobs(prefix: "folder/folder", useFlatBlobListing: true);

4. After you have your list of blobs you can iterate through them and extract path like this: foreach (var blob in blobs){blob.StorageUri.PrimaryUri;}

Answer 2

RAS's answer is correct but I have a solution with only two steps. Since, according to the official document , there is also a ListBlobs function in the CloudBlobClient class, we can get the blobs without creating the container object. the following are the steps:

1. Create blob client:

var account = new CloudStorageAccount(new StorageCredentials("myazurestorage", YOUR_API_KEY), true);
var blobClient = account.CreateCloudBlobClient();

2. Use ListBlobs like this:

var blobList= container.ListBlobs(prefix: "folder/folder/", useFlatBlobListing: true);

Be noticed of the ending forward slash(/) . if not added, the function returns the folder per se. if added, returns the blobs in the folder.

And unlike web development, if the prefix starts with "/", it will not work and return 404 (cannot find page.)

Also Azure Storage is case sensitive.

Use useFlatBlobListing , according to what you want. Why microsoft just use the word recursive? I think recursive is better.