preVisitDirectory可以遍历出所有的文件夹
visitFile可以遍历所有文件
List<String> folders=new ArrayList<>();
List<String> files=new ArrayList<>();
Files.walkFileTree(path, new SimpleFileVisitor<>() {
@Override
public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
folders.add(dir.toString());
return super.preVisitDirectory(dir, attrs);
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
files.add(file.toString());
return super.visitFile(file, attrs);
}
});
参考博客