java - 使用 java.nio.file* 进行目录和文件扫描；

Question

这个问题已经有答案了:

Java Nio absolute path to relative path (1 个回答)

已关闭 4 年前。

如何在java.io.File中实现相同的功能；

List<File> List = (List<File>) FileUtils.listFilesAndDirs(directory, 
                                    TrueFileFilter.TRUE, TrueFileFilter.TRUE);
String fileID = f.getAbsolutePath().replaceAll(staticRoot, "");

同时重构为 java.nio.file.*;

DirectoryStream<Path> List = Files.newDirectoryStream(Paths.get(directory));    
String fileID = f.??? 

什么方法会返回与 java.io.File 包中相同的输出？谢谢。

我已经尝试过

String fileID = f.toAbsolutePath().toString().replaceAll(staticRoot, "");

for (Path f : fList) {
    String fileID = f.toAbsolutePath().toString().replaceAll(staticRoot, "");
    System.out.println("file ID : " + fileID);
    String parentID = null;
}

staticRoot =/home/test/dir1/dir10/test9.txt
结果应该剪切'/home/test/'并仅返回dir1/dir10/test9.txt

Answer 1

由于 FileUtils.listFilesAndDirs(directory, TrueFileFilter.TRUE, TrueFileFilter.TRUE) 将递归访问 directory 中的所有子目录，因此您很可能希望将其替换为 Files.walk(Path, FileVisitOption...) 方法.

Return a Stream that is lazily populated with Path by walking the file tree rooted at a given starting file. The file tree is traversed depth-first, the elements in the stream are Path objects that are obtained as if by resolving the relative path against start.