public static string GetMimeType()

in src/AlibabaCloud.OSS.V2/MimeUtils.cs [605:619]


        public static string GetMimeType(string fileName, string @default = "")
        {
            var ext = GetExtension(fileName);

            if (_userMappings.Count > 0 && _userMappings.TryGetValue(ext, out var value))
            {
                return value;
            }

            if (_mappings.TryGetValue(ext, out value))
            {
                return value;
            }
            return @default;
        }