azure - 将文件上传到 CloudBlockBlob 时出现访问问题 - Windows Azure

Question

我必须从 Windows Azure 1.7 升级到 2.1。我对代码的唯一更改

blob.UploadFromFile(tempImage);到blob.UploadFromFile(tempImage,FileMode.CreateNew);

但是我收到以下错误:“将 FileMode: CreateNew 与 FileAccess: Read 结合起来无效。”

下面是我的代码(我添加了“blob.OpenWrite();”只是为了尝试)。有什么想法为什么我会收到此错误吗？

  string blobUri;

        /*var acct = CloudStorageAccount.FromConfigurationSetting("ImagesConnectionString");*/

        var setting = CloudConfigurationManager.GetSetting("ImagesConnectionString");
         var acct = CloudStorageAccount.Parse(setting);

        var blobClient = acct.CreateCloudBlobClient();
        var container = blobClient.GetContainerReference(RoleEnvironment.GetConfigurationSettingValue("ContainerName")); //.GetContainerReference("ContainerName");
        container.CreateIfNotExists(); //CreateIfNotExist

        var perms = container.GetPermissions();

        //upload blob image
        LocalResource local = RoleEnvironment.GetLocalResource("tempImages");
        string tempSlideImage = local.RootPath + mySlideName;
        myImage.Save(tempSlideImage);            

        CloudBlockBlob blob = container.GetBlockBlobReference(myImageName);
        blob.Properties.ContentType = "image/jpeg"; //photoToLoad.PostedFile.ContentType; //blob.Properties.ContentType = photoToLoad.PostedFile.ContentType;

        blobClient.ParallelOperationThreadCount = 3;
        blob.OpenWrite(); //this was added after the migration
        blob.UploadFromFile(tempImage,FileMode.CreateNew); //.UploadFile //blob.UploadFromStream(photoToLoad.FileContent);
        blobUri = blob.Uri.ToString();

Answer 1

UploadFromFile 的第二个参数(FileMode)指的是您希望如何在本地计算机上打开文件，而不是您希望如何处理 Azure 存储中的 blob。因此，要修复您可以:

改变

blob.UploadFromFile(tempImage,FileMode.CreateNew); 

至

blob.UploadFromFile(tempImage,FileMode.Open); 

另外，tempImage是什么？您要么遗漏了这部分代码，要么它应该是 tempSlideImage。