如何创建文件并上载到amazon-S3

Question

我有一个C# Lambda函数，它创建一个简单的.txt文件，如下所示：

string file = Path.DirectorySeparatorChar + "tmp" + Path.DirectorySeparatorChar + "file.txt";
File.Create(file);

然后我试着把它上传到S3

TransferUtility fileTransferUtility = new TransferUtility(new AmazonS3Client(Amazon.RegionEndpoint.EUWest1));
fileTransferUtility.Upload(file, MyBucketNameInString);

但是，它返回了以下错误：

文件createdOne或更多错误发生。(进程无法访问文件'/tmp/file.txt‘，因为它正被另一个进程使用。)：AggregateException

有什么解决办法吗？

Answer 1

将文件上载到S3的“我的简单解决方案”

private void AddFile(Stream image)
{
    InitializeKey();
    var uploadRequest = new TransferUtilityUploadRequest();
    uploadRequest.CannedACL = S3CannedACL.PublicRead;
    uploadRequest.InputStream = image;
    uploadRequest.BucketName = AppConfiguration.AmazonS3FileBucketName;
    uploadRequest.Key = _key;

    using (TransferUtility fileTransferUtility = new TransferUtility(_client))
    {
        fileTransferUtility.Upload(uploadRequest);
    }
}