Question

我在一个asp.net页面上传视频，将资产保存在会话变量中，然后在另一个asp.net页面中，我使用该资产来希望对视频进行编码（使用azure媒体服务调用）。我提交编码作业时遇到错误（使用job.submit）。它表示访问被拒绝，例外的类型是：system.security.cryptography.cryptographicException。

我想知道原因是我在新页面中创建了一个上下文吗？

以下是第1页的代码：

 Dim mediaServicesAccountName As String = ConfigurationManager.AppSettings("accountname")
        Dim mediaServicesAccountKey As String = ConfigurationManager.AppSettings("accountkey")
        Dim mediaCloud As New CloudMediaContext(mediaServicesAccountName, mediaServicesAccountKey)
        Dim assetOptions As New AssetCreationOptions()

        asset = mediaCloud.Assets.Create(Filename, assetOptions)
        Session("azureasset") = asset
        Dim assetFile As IAssetFile = asset.AssetFiles.Create(Filename)       
                Session("assetFile") = assetFile

以下是第2页的代码： Sub Page_Load 昏暗的资产作为IAsset asset = CType（Session（“azureasset”），IAsset） Dim assetname As String assetname = asset.Name'仅用于调试

    _context = New CloudMediaContext(_accountName, _accountKey)
    CreateEncodingJob(asset)
    End Sub

Private Function CreateEncodingJob(asset As IAsset) As IJob
    Dim job As IJob = _context.Jobs.Create("My encoding job")
          Dim processor As IMediaProcessor = GetLatestMediaProcessorByName("Windows Azure Media Encoder")
    Dim task As ITask = job.Tasks.AddNew("My encoding task", processor, "H264 Broadband 720p", Microsoft.WindowsAzure.MediaServices.Client.TaskOptions.ProtectedConfiguration)

    task.InputAssets.Add(asset)
    ' Add an output asset to contain the results of the job. 
    ' This output is specified as AssetCreationOptions.None, which 
    ' means the output asset is not encrypted. 
    task.OutputAssets.AddNew("Output asset", AssetCreationOptions.None)

    ' Use the following event handler to check job progress. 
    Dim ev As New EventHandler(AddressOf StateChanged)
    AddHandler job.StateChanged, AddressOf StateChanged
           ' Launch the job.
    job.Submit()

由于

Answer 1

我建议只在会话中保留AssetID。然后在创建CloudMediaContext后从CloudMediaContext获取IAsset引用。使用与此类似的代码（C＃）：

//var assetId = [Get this from Session, not the entire Asset object]
var asset = _context.Assets.Where(x => x.Id.Equals(assetId)).FirstOrDefault();
// no configure the job with this asset..

我最好的选择是确实你再次创建了CloudMediaContext，并且对资产的引用丢失了。您的新媒体上下文实例对您在会话中拥有的此资产对象一无所知。

当我在Azure中提交作业时，我得到“访问被拒绝”

1 个答案: