azure-blob-storage - 远程服务器返回错误：(404) Not Found。在使用 blob 存储中的 sas 令牌时

Question

我有一个将文件上传到 azure blob 存储的应用程序。我最初使用连接字符串从 blob 存储上传和下载文件。现在，我需要使用 sas 令牌从 blob 上传和下载文件，但我收到“远程服务器返回错误：（404）未找到”。下载我使用连接字符串上传的文件。

Answer 1

只需尝试下面的简单控制台应用程序即可生成 SAS 令牌并上传/下载 Blob：

using System;
using Azure.Storage.Blobs;
using Azure.Storage.Sas;

namespace blobSasTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var connstr = "<storang account connection string>"; ;
            var containerName = "<container name>";
            var blobName = "test.txt";  //blob name, just 4 test here.

            var destPath = "d:/temp/";  //temp path, just 4 test here.

            //get sas token to upload and download
            var sasURI = getSasToken4UploadAndDownload(connstr , containerName, blobName);

            var blobClient = new BlobClient(sasURI);

            //upload 
            blobClient.Upload(destPath + "test.txt",overwrite:true);

            //download
            blobClient.DownloadTo(destPath + "test2.txt");

        }

        public static Uri getSasToken4UploadAndDownload(string connstr , string container , string blob) {

            var blobClient = new BlobContainerClient(connstr, container).GetBlobClient(blob);
            var blobSasBuilder = new BlobSasBuilder
            {
                BlobContainerName = blobClient.BlobContainerName,
                BlobName = blobClient.Name
            };

            //1 hour to expire
            blobSasBuilder.ExpiresOn = DateTimeOffset.UtcNow.AddMinutes(60);
            //granting read,create,write permission to download and upload
            blobSasBuilder.SetPermissions(BlobSasPermissions.Read | BlobSasPermissions.Write | BlobSasPermissions.Create);

            var sas = blobClient.GenerateSasUri(blobSasBuilder);

            return sas;
        }
    }
}

结果：