使用java复制目录及其内容

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;

public class DirectoryCopier {

    public static void main(String[] args) {
        File sourceDirectory = new File("sourceDir");
        File targetDirectory = new File("targetDir");

        try {
            copyDirectory(sourceDirectory, targetDirectory);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void copyDirectory(File source, File target) throws IOException {
        if (source.isDirectory()) {
            if (!target.exists()) {
                target.mkdir();
            }

            String[] files = source.list();
            for (String file : files) {
                File srcFile = new File(source, file);
                File destFile = new File(target, file);

                copyDirectory(srcFile, destFile);
            }
        } else {
            copyFile(source, target);
        }
    }

    private static void copyFile(File source, File target) throws IOException {
        try (FileChannel sourceChannel = new FileInputStream(source).getChannel();
             FileChannel destChannel = new FileOutputStream(target).getChannel()) {
            destChannel.transferFrom(sourceChannel, 0, sourceChannel.size());
        }
    }
}