.Net core 3.1 从 S3 下载文件

如何解决.Net core 3.1 从 S3 下载文件

我在下面有这个下载文件方法

    public async Task<GetobjectResponse> DownloadFile(string bucket,string filePath)
    {
        var client = Client();
        GetobjectRequest req = new GetobjectRequest
        {
            BucketName = bucket,Key = filePath
        };
        return await client.GetobjectAsync(req);
    }

我从下面调用它：

        var download = await _s3Service.DownloadFile(Constants.S3.BUCKET,attachment.Location);
        MemoryStream stream = new MemoryStream();
        await download.ResponseStream.copyToAsync(stream);

我在 var 下载变量上遇到以下错误：

download.ResposeSTream.ReadTimeOut(),download.ResposeSTream.WriteTimeOut(),download.ResposeSTream.Length,download.ResposeSTream.Position 抛出异常 system.invalidOperationException 和