如何将大文件上传到 Azure Blob 存储 (.NET Core)
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【中文标题】如何将大文件上传到 Azure Blob 存储 (.NET Core)【英文标题】:How to upload big files to Azure Blob Storage (.NET Core) 【发布时间】:2021-12-18 13:56:00 【问题描述】:我尝试将 2GB 文件上传到 Azure 存储,但我的代码失败并且出现异常。对于较小的文件,它工作正常。如何更改超时和文件大小限制?我在 .NET Core 上使用 Azure.Storage.Blobs 版本 12.10.0。
我的代码:
public FileRepository(AppSettings appSettings)
var blobServiceClient = new BlobServiceClient(appSettings.StorageConnectionString);
var containers = blobServiceClient.GetBlobContainers();
if (!containers.Any(x => x.Name == containerName))
blobServiceClient.CreateBlobContainer(containerName);
_blobContainerClient = blobServiceClient.GetBlobContainerClient(containerName);
public async Task<string> Upload(string fileName, Stream content)
var blobName = $"Guid.NewGuid()/fileName";
await _blobContainerClient.UploadBlobAsync(blobName, content);
return blobName;
我有例外:
System.AggregateException
HResult=0x80131500
Message=Retry failed after 6 tries. (The operation was canceled.) (The operation was canceled.) (The operation was canceled.) (The operation was canceled.) (The operation was canceled.) (The operation was canceled.)
Source=Azure.Core
StackTrace:
at Azure.Core.Pipeline.RetryPolicy.<ProcessAsync>d__11.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Core.Pipeline.HttpPipelineSynchronousPolicy.<ProcessAsync>d__1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Core.Pipeline.HttpPipelineSynchronousPolicy.<ProcessAsync>d__1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Core.Pipeline.HttpPipelineSynchronousPolicy.<ProcessAsync>d__1.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Azure.Storage.Blobs.BlobRestClient.BlockBlob.<UploadAsync>d__0.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Threading.Tasks.ValueTask`1.get_Result()
at Azure.Storage.Blobs.Specialized.BlockBlobClient.<UploadInternal>d__26.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Azure.Storage.Blobs.Specialized.BlockBlobClient.<>c__DisplayClass48_0.<<GetPartitionedUploaderBehaviors>b__0>d.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Azure.Storage.PartitionedUploader`2.<UploadInternal>d__19.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Azure.Storage.Blobs.BlobClient.<StagedUploadInternal>d__29.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at Azure.Storage.Blobs.BlobContainerClient.<UploadBlobAsync>d__83.MoveNext()
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at C:\...\FileRepository.<Upload>d__3.MoveNext() in C:\...\FileRepository.cs:line 38
Inner Exception 1:
TaskCanceledException: The operation was canceled.
Inner Exception 2:
HttpRequestException: Error while copying content to a stream.
Inner Exception 3:
IOException: Unable to read data from the transport connection: The I/O operation has been aborted because of either a thread exit or an application request..
Inner Exception 4:
SocketException: The I/O operation has been aborted because of either a thread exit or an application request.
【问题讨论】:
【参考方案1】:我认为使用BlobContainerClient
上传时无法控制超时选项和文件大小限制。
您需要在BlobClient
类中使用UploadAsync
方法并在BlobUploadOptions.TransferOptions
中指定适当的值。
如果您想对上传过程进行更精细的控制,则需要在特定的 blob 客户端中使用上传方法。例如,如果您要上传块 blob,则可以使用 BlockBlobClient.StageBlockAsync
和 BlockBlobClient.CommitBlockListAsync
。
【讨论】:
非常感谢,就是这样。 PS 我用过: var clientOptions = new BlobClientOptions(); clientOptions.Retry.MaxRetries = 1; clientOptions.Retry.NetworkTimeout = TimeSpan.FromMinutes(30);【参考方案2】:您可以在客户端将文件拆分为chunks/blocks
。然后发送大量 100 MB 的小块。
将文件分割成更小的块,如果您使用 Stream 之类的代码,则代码只会读取一定数量的字节并处理这些字节直到完成。
请参考Implement File Chunking,Upload a file in blocks 和Put Blob 了解更多详情。
【讨论】:
问题是关于 Azure.Storage.Blobs v12,而您将链接发送到 [1] v11、[2] 甚至更旧的 skd [3] rest api,它们的工作方式都不同。我的问题是关于 v12以上是关于如何将大文件上传到 Azure Blob 存储 (.NET Core)的主要内容,如果未能解决你的问题,请参考以下文章
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