Java中Files.walk遍历目录方法

import java.nio.file.*;
import java.io.IOException;
import java.util.stream.Stream;

public class DirectoryWalker {
    public static void main(String[] args) {
        Path startDir = Paths.get("your/directory/path");

        try (Stream walk = Files.walk(startDir)) {
            walk.forEach(System.out::println);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

try (Stream walk = Files.walk(startDir, 2)) { // 最大深度为2
    walk.forEach(System.out::println);
} catch (IOException e) {
    e.printStackTrace();
}

try (Stream walk = Files.walk(startDir)) {
    walk.filter(Files::isRegularFile)         // 只保留普通文件
        .filter(path -> path.toString().endsWith(".txt"))
        .forEach(System.out::println);
} catch (IOException e) {
    e.printStackTrace();
}

try (Stream walk = Files.walk(startDir, Integer.MAX_VALUE, FileVisitOption.FOLLOW_LINKS)) {
    walk.forEach(path -> {
        try {
            if (Files.isReadable(path)) {
                System.out.println("读取: " + path);
            }
        } catch (Exception e) {
            System.err.println("无法访问: " + path);
        }
    });
} catch (IOException e) {
    System.err.println("遍历失败: " + e.getMessage());
}