使用Uri降级blob时得到错误"404指定的blob不存在“
使用Uri降级blob时得到错误"404指定的blob不存在“
提问于 2022-08-12 16:11:03
我正在尝试使用Service主题中的blob url下载blob，触发Azure函数，但下面是错误：
Status: 404 (The specified blob does not exist.)
ErrorCode: BlobNotFound
Content:
<?xml version="1.0" encoding="utf-8"?><Error><Code>BlobNotFound</Code><Message>The specified blob does not exist.
</Message></Error>下面是我的Startup.cs文件：
[assembly: FunctionsStartup(typeof(Startup))]
namespace Emails.Dispatcher
{
public class Startup : FunctionsStartup
{
public override void Configure(IFunctionsHostBuilder builder)
{
builder.Services.AddSingleton(x =>
new BlobServiceClient(connectionString: Environment.GetEnvironmentVariable("AzureWebJobsStorage")));
builder.Services.AddSingleton<IBlobService, BlobService>();
builder.Services.AddLogging();
builder.Services.AddHttpClient();
builder.AddHelpers();
builder.Services.AddWorkers();
}
}
}BlobService：
public class BlobService : IBlobService
{
private readonly BlobServiceClient _blobServiceClient;
public BlobService(BlobServiceClient blobServiceClient)
{
this._blobServiceClient = blobServiceClient;
}
public async Task<byte[]> DownloadAsync(string containerName, string fileUri)
{
var containerClient = _blobServiceClient.GetBlobContainerClient(containerName);
var blobClient = containerClient.GetBlobClient(fileUri);
using (var ms = new MemoryStream())
{
await blobClient.DownloadStreamingAsync();
return ms.ToArray();
}
}
public async Task<BlobDto> UploadAsync(string containerName, string filename, string content)
{
var containerClient = _blobServiceClient.GetBlobContainerClient(containerName);
var blobClient = containerClient.GetBlobClient(filename);
var bytes = Encoding.UTF8.GetBytes(content);
await using var memoryStream = new MemoryStream(bytes);
await blobClient.UploadAsync(content);
return new BlobDto
{
Uri = blobClient.Uri,
Name = blobClient.Name
};
}
}
public interface IBlobService
{
Task<BlobDto> UploadAsync(string containerName, string filename, string content);
Task<byte[]> DownloadAsync(string containerName, string fileUri);
}实际上，该服务正在接收完整的blob url (即https://{storage-url}.blob.core.windows.net/{container-name}/files/unzip/691ec307-7c2b-4aaa-8f75-8742c9faa9f5/1615015726/{file-name}.pdf)。
我在这里错过了什么吗？
Stack Overflow用户
发布于 2022-08-12 17:37:55
我可以在Uri和CloudBlockBlob的名称属性的帮助下下载blob文件。如下所示：
public async Task<byte[]> DownloadAsync(string containerName, string fileUri)
{
var containerClient = _blobServiceClient.GetBlobContainerClient(containerName);
var blobUri = new System.Uri(fileUri);
var name = new CloudBlockBlob(blobUri).Name;
var blobClient = containerClient.GetBlobClient(name);
var response = await blobClient.DownloadStreamingAsync();
using MemoryStream ms = new MemoryStream();
await response.Value.Content.CopyToAsync(ms);
ms.Position = 0;
return ms.ToArray();
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/73337005
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