c# - 如何从 ASP.NET Core 应用程序将图像上传到 Azure Blob 存储中的特定目录？

Question

我想将图像上传到我的 blob 存储容器中的特定子目录，但我不知道该怎么做。查看文档后，我可以看到，GetBlobs() 上有一个重载，它允许您指定前缀，但我看不到用于上传的前缀。这是我处理这个问题的方法。

上传位置为:uploads/car/17999/

CarController.cs

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

[HttpPost]
[ValidateAntiForgeryToken]
public IActionResult Create(Car car)
{
    // Define the cancellation token.
    CancellationTokenSource source = new CancellationTokenSource();
    CancellationToken token = source.Token;

    if (ModelState.IsValid)
    {
        _carService.InsertCar(car);

        int id = car.Id;
        string pathPrefix = "car/17999";
        string fileName = "car-image.jpg";
        string strContainerName = "uploads";

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

        //An example of how I would GET the blobs from a prefixed location, I don't know how to apply this to the upload part
        //var blobs = containerClient.GetBlobs(0, 0, pathPrefix);

        var blobs = containerClient.UploadBlob(fileName, car.ImageFile.OpenReadStream());
            return RedirectToAction(nameof(Index));
        }            
        return View(car);
    }

Answer 1

请尝试更改您的fileName 并在其中添加pathPrefix。像这样的东西:

string blobName = "car/17999/car-image.jpg";
containerClient.UploadBlob(blobName , car.ImageFile.OpenReadStream());

这应该将图像上传到 car/17999 虚拟文件夹中。

其他选择是使用 BlockBlobClient并使用其 Upload方法:

var connectionString = "UseDevelopmentStorage=true";
var containerName = "uploads";
var blobName = "car/17999/car-image.jpg";
BlockBlobClient blockBlobClient = new BlockBlobClient(connectionString, containerName, blobName);
blockBlobClient.Upload(car.ImageFile.OpenReadStream());