oss文件上传成功，但是显示0kb

            PutObjectResult result;
            fileName = GetFileName(fileName);
            if (fileCreateType == FileCreateType.CreateNew)
            {
                if (!ExistFile(fileName))
                {
                    RecurseCreateFileDir(fileName);
                    Log.Info($"CreateFile=>CreateNew=>[{fileName}]=>{stream.Length}");
                    result = ossClient.PutObject(Config.BucketName, fileName, stream);
                }
                else
                {
                    throw new HimallIOException(IOErrorMsg.FileExist.ToDescription());
                }
            }
            else
            {
                RecurseCreateFileDir(fileName);
                Log.Info($"CreateFile=>[{fileName}]=>{stream.Length}");
                result = ossClient.PutObject(Config.BucketName, fileName, stream);
            }
            Log.Info($"CreateFile=>[{fileName}]=>{result.ToJSON()}");

文件上传成功，日志显示正常

CreateFile=>[temp/201909091620562159520.jpg]=>906523

CreateFile=>[temp/201909091620562159520.jpg]=>{"ETag":"D41D8CD98F00B204E9800998ECF8427E"} 

但是文件却无法打开，显示0kb