Question

我有以下简单的应用程序页面，它使用手机摄像头将拍摄的照片上传到azure blob：

public partial class AddReport : PhoneApplicationPage
{
    // blobs stuff
    string storageAccount = "MYACCOUNT";
    string storageKey = "MYKEY";
    string blobServiceUri = "http://MYACCOUNT.blob.core.windows.net";
    CloudBlobClient blobClient;

    private Report newReport;
    public AddReport()
    {
        InitializeComponent();   
    }

    protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
    {
        //base.OnNavigatedTo(e);

        newReport = new Report();
        var credentials = new StorageCredentialsAccountAndKey(storageAccount, storageKey);
        blobClient = new CloudBlobClient(blobServiceUri, credentials);
    }

    private void TakePhotoClick(object sender, EventArgs eventArgs)
    {
        //The camera chooser used to capture a picture.
        CameraCaptureTask ctask;

        //Create new instance of CameraCaptureClass
        ctask = new CameraCaptureTask();

        //Create new event handler for capturing a photo
        ctask.Completed += new EventHandler<PhotoResult>(ctask_Completed);

        //Show the camera.
        ctask.Show();

    }

    void ctask_Completed(object sender, PhotoResult e)
    {

        if (e.TaskResult == TaskResult.OK && e.ChosenPhoto != null)
        {

            WriteableBitmap CapturedImage = PictureDecoder.DecodeJpeg(e.ChosenPhoto);
            UploadToBlobContainer(e.ChosenPhoto);
        }
        else
        {
            //user decided not to take a picture
        }
    }
    private void UploadToBlobContainer(System.IO.Stream stream)
    {
        string containerName = "reportsPhotos";
        var container = blobClient.GetContainerReference(containerName);

        container.CreateIfNotExist(true, r =>
            Dispatcher.BeginInvoke(() =>
            {
                var blobName = "report" + newReport.ReportId.ToString();
                var blob = container.GetBlobReference(blobName);
                blob.Metadata["ReportId"] = newReport.ReportId.ToString();
                blob.UploadFromStream(stream, r2 =>
                    Dispatcher.BeginInvoke(() =>
                    {
                         newReport.Photo = container.Uri + "/" + blobName;
                    }));
            }));

    }
}

这是一个简单的案例，我没有使用SAS进行身份验证，而是将密钥保存在应用程序本身（这仅用于测试目的），而且我的blob也是公开可用的。

当我在调试模式下运行时，似乎一切正常，但照片没有上传到blob。另外，我不知道如何调试它以查看blob服务是否有任何错误。

谁能告诉我可能出现的问题？

EDIT1：似乎还没有创建容器。我已使用azure blob explorer

确认了这一点

EDIT2：我得到System.Net.WebException : "The remote server returned an error: NotFound."

Answer 1

经过长时间的工作，我终于发现问题在于这一行：

string containerName = "reportsPhotos";

根据here，容器名称中的所有字母必须为小写。将其更改为reportsphotos解决了问题

花了很多时间。

Answer 2

你能尝试这样做吗：

// Retrieve storage account from connection-string
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(
    RoleEnvironment.GetConfigurationSettingValue("StorageConnectionString"));

// Create the blob client
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();

// Retrieve reference to a previously created container
CloudBlobContainer container = blobClient.GetContainerReference("mycontainer");

// Retrieve reference to a blob named "myblob"
CloudBlob blob = container.GetBlobReference("myblob");

// Create or overwrite the "myblob" blob with contents from a local file
using (var fileStream = System.IO.File.OpenRead(@"path\myfile"))
{
    blob.UploadFromStream(fileStream);
}

这是来自：

http://www.windowsazure.com/en-us/develop/net/how-to-guides/blob-storage/#upload-blob

在WP7中将照片流从相机上传到azure blob

2 个答案: