上传图像到azure blob存储

Question

我知道这个问题可以被解释为重复，但我可以根本不能让blop服务工作。我遵循标准example on msdn。我已经在我的代码中实现，但是遵循了这个例子。我可以通过示例中提供的脚本来获取MobileService，以便插入具有打开属性的Blob。然后我用这个代码将图像上传到Blob存储：

BitmapImage bi = new BitmapImage(); 
MemoryStream stream = new MemoryStream(); 
if (bi != null) 
{ 
     WriteableBitmap bmp = new WriteableBitmap((BitmapSource)bi); 
     bmp.SaveJpeg(stream, bmp.PixelWidth, bmp.PixelHeight, 0, 100); 
} 

if (!string.IsNullOrEmpty(uploadImage.SasQueryString)) 
{ 
     // Get the URI generated that contains the SAS 
     // and extract the storage credentials. 
     StorageCredentials cred = new StorageCredentials(uploadImage.SasQueryString); 
     var imageUri = new Uri(uploadImage.ImageUri); 

     // Instantiate a Blob store container based on the info in the returned item. 
     CloudBlobContainer container = new CloudBlobContainer(
     new Uri(string.Format("https://{0}/{1}", 
     imageUri.Host, uploadImage.ContainerName)), cred); 

     // Upload the new image as a BLOB from the stream. 
     CloudBlockBlob blobFromSASCredential = container.GetBlockBlobReference(uploadImage.ResourceName); 
     await blobFromSASCredential.UploadFromStreamAsync(stream);//error! 

     // When you request an SAS at the container-level instead of the blob-level, 
     // you are able to upload multiple streams using the same container credentials. 

     stream = null; 
} 

我得到一个错误在点标记错误的代码，并出现以下错误：

+  ex {Microsoft.WindowsAzure.Storage.StorageException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound. ---> System.Net.WebException: The remote server returned an error: NotFound. 

这一点我不理解，因为从脚本返回字符串代码：

// Generate the upload URL with SAS for the new image. 
var sasQueryUrl = blobService.generateSharedAccessSignature(item.containerName, 
item.resourceName, sharedAccessPolicy); 

// Set the query string. 
item.sasQueryString = qs.stringify(sasQueryUrl.queryString); 

// Set the full path on the new new item, 
// which is used for data binding on the client. 
item.imageUri = sasQueryUrl.baseUrl + sasQueryUrl.path; 

当然，这也描述了我不完全掌握Blob存储的建设。因此，任何帮助将不胜感激。

评论详情 从服务器代码，它应该创建一个公共笔记至少5分钟。因此不是一个问题。我的服务器脚本与the link相同。但在这里复制：

var azure = require('azure'); 
var qs = require('querystring'); 
var appSettings = require('mobileservice-config').appSettings; 

function insert(item, user, request) { 
// Get storage account settings from app settings. 
var accountName = appSettings.STORAGE_ACCOUNT_NAME; 
var accountKey = appSettings.STORAGE_ACCOUNT_ACCESS_KEY; 
var host = accountName + '.blob.core.windows.net'; 

if ((typeof item.containerName !== "undefined") && (
item.containerName !== null)) { 
    // Set the BLOB store container name on the item, which must be lowercase. 
    item.containerName = item.containerName.toLowerCase(); 

    // If it does not already exist, create the container 
    // with public read access for blobs.   
    var blobService = azure.createBlobService(accountName, accountKey, host); 
    blobService.createContainerIfNotExists(item.containerName, { 
     publicAccessLevel: 'blob' 
    }, function(error) { 
     if (!error) { 

      // Provide write access to the container for the next 5 mins.   
      var sharedAccessPolicy = { 
       AccessPolicy: { 
        Permissions: azure.Constants.BlobConstants.SharedAccessPermissions.WRITE, 
        Expiry: new Date(new Date().getTime() + 5 * 60 * 1000) 
       } 
      }; 

      // Generate the upload URL with SAS for the new image. 
      var sasQueryUrl = 
      blobService.generateSharedAccessSignature(item.containerName, 
      item.resourceName, sharedAccessPolicy); 

      // Set the query string. 
      item.sasQueryString = qs.stringify(sasQueryUrl.queryString); 

      // Set the full path on the new new item, 
      // which is used for data binding on the client. 
      item.imageUri = sasQueryUrl.baseUrl + sasQueryUrl.path; 

     } else { 
      console.error(error); 
     } 

     request.execute(); 
    }); 
} else { 
    request.execute(); 
} 
} 

与图片的想法是，该应用程序的其他用户应该能够访问它们。据我了解，我已公开，但只公开5分钟。 blob的url保存在mobileservice表中，用户需要进行身份验证，我希望存储上具有相同的安全性。但不知道这是否完成？我很抱歉所有愚蠢的问题，但我一直无法自己解决，所以我不得不“看起来”愚蠢:)

Answer 1

如果有人在这里需要帮助。对我来说问题在于uri。它应该是http而不是https。然后，没有错误上传。

但是，即使在来自工具箱的测试图像控件上显示图像也没有成功。问题是，我不得不设置流开始时：

stream.Seek(0, SeekOrigin.Begin); 

然后上传工作，能够检索数据。