获取文件夹及其子文件夹下的文件名

protected void putAttFileList(File rootFile) {
        if (rootFile.exists()) {
            File[] files = rootFile.listFiles();
            for (File file : files) {
                if (file.isFile()) {
                    String fileName = file.getName();
                    this.filelist.add(fileName);
                } else if (rootFile.isDirectory()) {
                    this.putAttFileList(file);
                }
            }
        }
    }