private static final Logger logger = LoggerFactory.getLogger(FileSystemClient.class);

    public static final String FILE_ATTRIBUTE_VIEW = "fileAttributeView";

    public static final String FS_FILE_USER = "fsFileUser";

    public static final String FS_FILE_GROUPS = "fsFileGroups";

    protected String charset = Constants.UTF_8;

    @Resource
    protected ContentLengthHelper contentLengthHelper;