JAVA正则表达式过滤文件的实现方法

String filePattern = "/data/logs/.+//.log"; File f = new File(filePattern); File parentDir = f.getParentFile(); String regex = f.getName(); FileSystem FS = FileSystems.getDefault(); final PathMatcher matcher = FS.getPathMatcher("regex:" + regex);  DirectoryStream.Filter<Path> fileFilter = new DirectoryStream.Filter<Path>() {  @Override  public boolean accept(Path entry) throws IOException {   return matcher.matches(entry.getFileName()) && !Files.isDirectory(entry);  } };  List<File> result = Lists.newArrayList(); try (DirectoryStream<Path> stream = Files.newDirectoryStream(parentDir.toPath(), fileFilter)) {  for (Path entry : stream) {   result.add(entry.toFile());  } } catch (IOException e) {  e.printStackTrace(); } for(File file : result) {  System.out.println(file.getParent() + "/" + file.getName()); }  

Path path = Paths.get("/data/logs"); Pattern pattern = Pattern.compile("^.+//.log"); List<Path> paths = Files.walk(path).filter(p -> {  //如果不是普通的文件，则过滤掉  if(!Files.isRegularFile(p)) {   return false;  }  File file = p.toFile();  Matcher matcher = pattern.matcher(file.getName());  return matcher.matches(); }).collect(Collectors.toList());  for(Path item : paths) {  System.out.println(item.toFile().getPath()); }