CODEWITHSUNDEEP
azureazure-blob-storage
Sakhawat Hossain
Sakhawat Hossain

Reputation: 463

The specified blob does not exist - Download Azure Storage File From Android

I know there are similar questions like this one but none of them worked for me. I am trying to download a file from Azure storage. But I am getting an error and the error message is The specified blob does not exist. But the blob does exist and my connection string is also valid. I am sharing my code below. It would be helpful if someone can help me out.

Code:

public void downloadFile(ShowContentInfo showContentInfo){
    ExecutorService executor = Executors.newSingleThreadExecutor();
    Handler handler = new Handler(Looper.getMainLooper());
    executor.execute(() ->{
        CloudStorageAccount storageAccount = null;
        try {
            String dir = "/storage/emulated/0/Download/LmsContents/";
            if (!dt.file.folderExists(dir)) {
                dt.file.createFolder(dir);
            }
            storageAccount = CloudStorageAccount.parse(CONNECTION_STRING);
            CloudBlobClient blobClient = storageAccount.createCloudBlobClient();
            CloudBlobContainer container = blobClient.getContainerReference("containerName");
            CloudBlockBlob blockBlob = container.getBlockBlobReference("rblobName");
            File file = new File("/storage/emulated/0/Download/LmsContents/" + showContentInfo.getContentTitle());
            blockBlob.downloadToFile("/storage/emulated/0/Download/LmsContents/" + showContentInfo.getContentTitle());
        } catch (URISyntaxException e) {
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            e.printStackTrace();
        } catch (StorageException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        handler.post(() -> {
            Toast.makeText(context, "Successful", Toast.LENGTH_SHORT).show();
        });
    });

}

Upvotes: 0

Views: 2914

Answers (2)

Rahul Shukla
Rahul Shukla

Reputation: 716

Check the folder references it seems folder structure which you are providing incorrect. Just see while debugging url is correct or not .

Upvotes: 1

Ivan Glasenberg
Ivan Glasenberg

Reputation: 29940

One possible reason is that your blob file is not directly under the container. Please check in azure storage via azure portal, see if the blob file is under some subfolders within the container.

If yes(for example, the blob file is b.txt, container name is container111, and subfolder name is sub111), then you should change this line of code

CloudBlockBlob blockBlob = container.getBlockBlobReference("rblobName");

to

CloudBlockBlob blockBlob = container.getBlockBlobReference("sub111\b.txt");

And also, please check the connection string is correct or not.

Upvotes: 1

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