private static String fetchNode(String path) {
        if (path.indexOf(separator) <= 0) {
            return path;
        }
        return path.substring(0, path.indexOf(separator));
    }
private static String fetchNode(String path) {
        if (path.indexOf(separator) <= 0) {
            return path;
        }
        return path.substring(0, path.indexOf(separator));
    }
private static String fetchNode ( String path ) { if ( path . indexOf ( separator ) <= 0 ) { return path ; } return path . substring ( 0 , path . indexOf ( separator ) ) ; }
取得节点名
取得节点名