| public Exists ( IMongoQuery query ) : bool | ||
| query | IMongoQuery | The GridFS file. |
| return | bool | |
/// <summary>
/// 获取元数据信息
/// </summary>
/// <param name="remoteFile"></param>
/// <returns></returns>
public MetaInfo GetMeta(string remoteFile)
{
_logger.DebugFormat("GetMeta By Id{0}.", remoteFile);
MongoGridFS fs = new MongoGridFS(_context.DataBase);
if (!fs.Exists(remoteFile))
{
return null;
}
var info = fs.FindOne(remoteFile);
return new MetaInfo
{
fileName = remoteFile,
MD5 = info.MD5,
MimeType = info.ContentType,
};
}
private void ImportFiles(MongoGridFS fs, IEnumerable<FileInfo> files, string root)
{
foreach (var file in files)
{
var name = file.FullName;
if (!string.IsNullOrEmpty(root))
{
name = name.Replace(root, string.Empty);
}
if(_unixStyle)
name = name.Replace('\\', '/');
if (_winStyle)
name = name.Replace('/', '\\');
Stream stream;
if (fs.Exists(name))
stream = fs.Open(name, FileMode.Truncate, FileAccess.Write);
else
stream = fs.Create(name);
var fileStream = file.Open(FileMode.Open, FileAccess.Read);
fileStream.CopyTo(stream);
fileStream.Close();
stream.Close();
}
}
/// <summary>
/// 判断文件是否存在
/// </summary>
/// <param name="remoteFile"></param>
/// <returns></returns>
public bool Exist(string remoteFile)
{
_logger.DebugFormat("Exist, Id {0}.", remoteFile);
try
{
MongoGridFS fs = new MongoGridFS(_context.DataBase);
return fs.Exists(remoteFile);
}
catch (Exception ex)
{
_logger.Error(ex.Message);
_logger.Error(ex.StackTrace);
throw;
}
}