c# - 通过内存流从Azure blob存储下载文件

Question

目前，我的 .net 7 API 中有一个端点，当命中该端点时，应使用文件名从我的 Blob 存储中下载特定文件。当我测试端点时，我收到 500 错误，指出 “此流不支持超时”。我已附上下面的错误以获取更多信息。

端点.cs

public IEndpointRouteBuilder MapEndpoints(IEndpointRouteBuilder endpoints)
{


    endpoints.MapGet("getBlob/{blobname}", async (string blobName, IApplicationFormService applicationFormService) => await applicationFormService.GetBlob(blobName))
        .Produces<FileStreamResult>();


    return endpoints;
}

服务.cs

public async Task<IResult> GetBlob(string blobName)
{

    BlobClient blobClient = _blobServiceClient
        .GetBlobContainerClient("root")
        .GetBlobClient(blobName);


    try
    {
        using (var memoryStream = new MemoryStream())
        {
            await blobClient.DownloadToAsync(memoryStream);
            memoryStream.Seek(0, SeekOrigin.Begin);


            var newMemoryStream = new MemoryStream(memoryStream.ToArray());


            return Results.Ok(new FileStreamResult(newMemoryStream, "application/octet-stream") { FileDownloadName = blobName });
        }

    }
    catch (Exception ex)
    {
        Console.WriteLine($"An error occurred: {ex.Message}");
    }



    return Results.Ok(blobName);
}

Answer 1

问题是当我应该返回 Results.File() 时我却返回了 Results.ok()

using (var memoryStream = new MemoryStream())
        {
            await blobClient.DownloadToAsync(memoryStream);
            //memoryStream.Seek(0, SeekOrigin.Begin);

            return Results.File(memoryStream.ToArray(), "application/octet-stream", blobName);
        }