java如何使用Files.walkFileTree获取文件夹下的文件夹和文件数量呢?

实现思路:
    使用preVisitDirectory即可获取文件夹信息

 
import lombok.extern.slf4j.Slf4j;
 
import java.io.IOException;
import java.nio.file.*;
import java.nio.file.attribute.BasicFileAttributes;
import java.util.concurrent.atomic.AtomicInteger;
@Slf4j
public class TestFileWalkFileTree {
    public static void main(String[] args) throws IOException {
        AtomicInteger dirCount=new AtomicInteger();
        AtomicInteger fileCount=new AtomicInteger();
        Files.walkFileTree(Paths.get("d:\test"),new SimpleFileVisitor<Path>(){
            @Override
            public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) throws IOException {
                System.out.println("===>"+dir);
                dirCount.incrementAndGet();
                return super.preVisitDirectory(dir, attrs);
            }
            @Override
            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
                fileCount.incrementAndGet();
                System.out.println("-->"+file);
                return super.visitFile(file, attrs);
            }
        });
        log.info("遍历文件夹数量：{},文件数量：{}",dirCount,fileCount);
    }
}