Azure Worker role and blob storage c# - Microsoft.WindowsAzure.Storage.StorageException: The remote server returned an error: (400) Bad Request

Question

我已将文件上传到 blob 存储中。我正在尝试从工作者角色下载这些文件以对其进行一些处理。容器名称从 WebApi2 发送到队列。

工作者角色首先从队列中获取容器名称，然后尝试下载该容器中的 blob。

下面是名字的代码：

  public override void Run()
    {
        Trace.WriteLine("Starting processing of messages");

        // Initiates the message pump and callback is invoked for each message that is received, calling close on the client will stop the pump.
        Client.OnMessage((receivedMessage) =>
        {
            try
            {
                // Process the message
                Trace.WriteLine("Processing Service Bus message: " + receivedMessage.SequenceNumber.ToString());
                string msg = "Container Name: " + receivedMessage.GetBody<String>();
                Trace.WriteLine("Processing Service Bus message: " + msg);

                CloudStorageAccount storageAccount =   CloudStorageAccount.Parse(
    CloudConfigurationManager.GetSetting("MyStorage"));


                CloudBlobContainer imagesContainer = null;


                CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

                imagesContainer = blobClient.GetContainerReference(msg);


                // Create the container if it doesn't already exist.
                imagesContainer.CreateIfNotExists();


                imagesContainer.SetPermissions(new BlobContainerPermissions
                {
                    PublicAccess = BlobContainerPublicAccessType.Blob
                });

                var blobs = imagesContainer.ListBlobs();
                var listOfFileNames = new List<string>();


                foreach (var blob in blobs)
                {
                    var blobFileName = blob.Uri.Segments.Last();
                    listOfFileNames.Add(blobFileName);
                    Trace.WriteLine(listOfFileNames);
                }

                if (listOfFileNames == null)
                {

                    Trace.WriteLine("present");
                }



                for (i = 1; i < 3; i++)
                {
                    CloudBlockBlob signBlob =    imagesContainer.GetBlockBlobReference(i + ".txt");

                    MemoryStream lms = new MemoryStream();
                    signBlob.DownloadToStream(lms);
                    lms.Seek(0, SeekOrigin.Begin);

                    StreamReader SR = new StreamReader(lms);
                    Trace.WriteLine(SR);
                }


            }




            catch(Microsoft.WindowsAzure.Storage.StorageException e)
            {
                // Handle any message processing specific exceptions here
                Trace.WriteLine("Error:" + e);
            }
        });

        CompletedEvent.WaitOne();
    }

我收到以下异常：

enter code hereException thrown: 'Microsoft.WindowsAzure.Storage.StorageException' in Microsoft.WindowsAzure.Storage.dll

错误：Microsoft.WindowsAzure.Storage.StorageException：远程服务器返回错误：(400) 错误请求。 ---> System.Net.WebException：远程服务器返回错误：（400）错误请求。 在 System.Net.HttpWebRequest.GetResponse() 在 Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand1 cmd, IRetryPolicy policy, OperationContext operationContext) in c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Executor\Executor.cs:line 677 --- End of inner exception stack trace --- at Microsoft.WindowsAzure.Storage.Core.Executor.Executor.ExecuteSync[T](RESTCommand1 cmd，IRetryPolicy 策略，OperationContext operationContext) 在 c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Core\Executor\Executor.cs:line 604 在 Microsoft.WindowsAzure.Storage.Blob.CloudBlobContainer.CreateIfNotExists(BlobContainerPublicAccessType accessType, BlobRequestOptions requestOptions, OperationContext operationContext) 在 c:\Program Files (x86)\Jenkins\workspace\release_dotnet_master\Lib\ClassLibraryCommon\Blob\CloudBlobContainer.cs:line 199 在 WorkerRoleWithSBQueue1.WorkerRole.b__4_0(BrokeredMessage receivedMessage)

非常感谢任何帮助。

Answer 1

查看您的代码，您正在执行以下操作：

string msg = "Container Name: " + receivedMessage.GetBody<String>();

然后您将执行以下操作：

        imagesContainer = blobClient.GetContainerReference(msg);
        // Create the container if it doesn't already exist.
        imagesContainer.CreateIfNotExists();

所以基本上您正在创建一个以 Container Name 开头的容器名称，这是容器名称的无效值。这就是您收到错误的原因。

请参阅此 link 以了解 blob 容器的有效命名约定：https://msdn.microsoft.com/en-us/library/azure/dd135715.aspx。