递归获取文件夹路径下所有文件

public static ArrayList<File> getListFiles(Object obj) {
File directory = null;
if (obj instanceof File) {
directory = (File) obj;
} else {
directory = new File(obj.toString());
}
ArrayList<File> files = new ArrayList<File>();
if (directory.isFile()) {
files.add(directory);
return files;
} else if (directory.isDirectory()) {
File[] fileArr = directory.listFiles();
for (int i = 0; i < fileArr.length; i++) {
File fileOne = fileArr[i];
files.addAll(getListFiles(fileOne));
}
}
return files;
}

class.getListFiles("D:/订阅素材商店"); 获取该路径下所有文件（不包括文件夹）