尝试链接到cshtml页面上的azure blob文件

Question

我已经将一些jpg和txt文件上传到azure blob商店,我已经阅读了本教程,所以我知道如何检索它们.

我想弄清楚的是当点击我的cshtml页面中的链接时如何加载和链接到文件.

谢谢!

Answer 1

如果你知道如何检索你知道如何加载它们的文件,你可以设置一些非常简单的东西.

ViewModel,它将表示您要在视图/页面上显示的数据.

public class FileViewModel 
{

  public string FileName {get; set;}
  public string AzureUrl {get; set;}

}

控制器动作

public ActionResult ListFiles()
{

 var fileList = new List<FileViewModel>();

 //.. code to connect to the azure account and container

 foreach (IListBlobItem item in container.ListBlobs(null, false))
{
         if (item.GetType() == typeof(CloudBlockBlob))
        {
            CloudBlockBlob blob = (CloudBlockBlob)item;
        //In case blob container's ACL is private, the blob can't be accessed via simple URL. For that we need to
        //create a Shared Access Signature (SAS) token which gives time/permission bound access to private resources.
        var sasToken = blob.GetSharedAccessSignature(new SharedAccessBlobPolicy()
        {
            Permissions = SharedAccessBlobPermissions.Read,
            SharedAccessExpiryTime = DateTime.UtcNow.AddHours(1),//Asssuming user stays on the page for an hour.
        });
        var blobUrl = blob.Uri.AbsoluteUri + sasToken;//This will ensure that user will be able to access the blob for one hour.

           fileList.Add(new FileViewModel
            {
                FileName = blob.Name,
                AzureUrl = blobUrl
            });

        }
  }
 return View(fileList)
}

cshtml视图

@model IEnumerable<FileViewModel>


<h2>File List</h2>

@foreach(var file in Model)
{
  //link will be opened in a new tab
  <a target="_blank" href="@file.AzureUrl">@file.FileName</a>
}

这仅在Blob的容器在此链接中是公共的时才有效,说明如何创建和使用私有blob容器.感谢GauravMantri指出了这一点.