使用SimpleFileVisitor遍历目录树以查找除两个子目录之外的所有.txt文件

import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;

public class TxtFileVisitor extends SimpleFileVisitor<Path> {
    @Override
    public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
        if (file.toString().endsWith(".txt")) {
            System.out.println(file);
        }
        return FileVisitResult.CONTINUE;
    }

    @Override
    public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
        if (dir.getFileName().toString().equals("子目录1") || dir.getFileName().toString().equals("子目录2")) {
            return FileVisitResult.SKIP_SUBTREE;
        }
        return FileVisitResult.CONTINUE;
    }
}

public class Main {
    public static void main(String[] args) throws IOException {
        Path rootDir = Paths.get("根目录的路径");

        TxtFileVisitor fileVisitor = new TxtFileVisitor();
        Files.walkFileTree(rootDir, fileVisitor);
    }
}