C# 如何从ASP.NET Core中的私有Azure Blob Stroage帐户将图像返回到视图？

我已将Azure blob存储容器设置为private，并在asp.net核心应用程序中定义了一个共享访问密钥。对于诸如列出blob存储的内容之类的工作，它工作得很好，但现在我发现自己需要带回一个图像文件，以便在视图中显示。问题是，当我返回blob时，是的，我可以在控制器中访问它，但它只是将字符串返回到它的位置，在不使用access键的情况下访问该位置会返回错误

Resource not found

，这是预期的

我的问题是，如何返回需要共享访问密钥的图像blob到我的视图？这里是我的代码，到目前为止，它只返回一个字符串形式的Uri，由于上述原因，它没有任何用处。我需要下载图像并暂时保存吗

汽车控制器的使用

using Azure.Storage.Blobs;
using Azure.Storage.Blobs.Models;

[HttpGet]
public IActionResult Edit(int id)
{
    var car = _carService.GetCar(id);

    string strContainerName = "uploads";    
    string filePrefix = "car/" + id + "/car-image.jpg";
    var filelist = new List<BlobListViewModel>();

    BlobServiceClient blobServiceClient = new BlobServiceClient(accessKey);
    BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(strContainerName);

    //Get the specific image 
    var blob = containerClient.GetBlobClient(filePrefix);

    //I'm binding to a view model as a string, which, as I say, doesn't work for security reasons.
    var data = new BlobListViewModel {
        FileName = blob.Uri.ToString()
    };

        return View(data);
    }

CarController.cs

using Azure.Storage.Blobs;
using Azure.Storage.Blobs.Models;

[HttpGet]
public IActionResult Edit(int id)
{
    var car = _carService.GetCar(id);

    string strContainerName = "uploads";    
    string filePrefix = "car/" + id + "/car-image.jpg";
    var filelist = new List<BlobListViewModel>();

    BlobServiceClient blobServiceClient = new BlobServiceClient(accessKey);
    BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(strContainerName);

    //Get the specific image 
    var blob = containerClient.GetBlobClient(filePrefix);

    //I'm binding to a view model as a string, which, as I say, doesn't work for security reasons.
    var data = new BlobListViewModel {
        FileName = blob.Uri.ToString()
    };

        return View(data);
    }

[HttpGet]
公共IActionResult编辑（内部id）
{
var car=\u carService.GetCar（id）；
字符串strContainerName=“上传”；
字符串filePrefix=“car/”+id+“/car image.jpg”；
var filelist=新列表（）；
BlobServiceClient BlobServiceClient=新BlobServiceClient（accessKey）；
BlobContainerClient containerClient=blobServiceClient.GetBlobContainerClient（strContainerName）；
//获取特定的图像
var blob=containerClient.GetBlobClient（filePrefix）；
//我将以字符串的形式绑定到视图模型，正如我所说的，出于安全原因，它不起作用。
var数据=新的BlobListViewModel{
FileName=blob.Uri.ToString（）
};
返回视图（数据）；
}

要从专用容器读取，您需要在blob或blob容器上创建至少具有

读取

权限的

这是您可以使用的代码。在本例中，我将在blob上创建一个SAS令牌，该令牌具有

Read

权限，该权限将在创建时1分钟后过期

        BlobSasBuilder blobSasBuilder = new BlobSasBuilder()
        {
            BlobContainerName = strContainerName,
            BlobName = filePrefix,
            ExpiresOn = DateTime.UtcNow.AddMinutes(1),
        };
        blobSasBuilder.SetPermissions(BlobAccountSasPermissions.Read);
        var sasToken = blobSasBuilder.ToSasQueryParameters(new Azure.Storage.StorageSharedKeyCredential(accountName, accountKey)).ToString();
        var blob = containerClient.GetBlobClient(filePrefix);
        var blobSasUrl = blob.Uri.ToString() + "?" + sasToken;
        //I'm binding to a view model as a string, which, as I say, doesn't work for security reasons.
        var data = new BlobListViewModel
        {
            FileName = blobSasUrl
        };