JAVA实现目录拷贝（注意递归的思想）

import org.junit.Test;

import java.io.*;

public class copyDir {

    public void copyDir(File source,File target){
        if(source.isFile()||!source.exists()){
            return;
        }
        File newDir=new File(target,source.getName());
        newDir.mkdir();
        File[] listFiles=source.listFiles();
        for (File listFile : listFiles) {
            if(listFile.isFile()){
                try
                {
                    BufferedInputStream bis=new BufferedInputStream(new FileInputStream(listFile));
                    BufferedOutputStream  bos=new BufferedOutputStream(new FileOutputStream(new File(newDir,listFile.getName())));
                    int len=0;
                    byte[]  bytes=new byte[1024*8];
                    while ((len=bis.read(bytes))!=-1){
                        bos.write(bytes,0,len);
                    }
                    bos.close();
                    bis.close();
                }
                catch (Exception e){

                }
            }else{
                copyDir(listFile, newDir);
            }
        }
    }

    @Test
    public void TestCopyDir(){
        File source=new File("D:\\io\\source");
        File target=new File("D:\\io\\target");
        copyDir(source, target);
    }
}

本文地址：https://blog.csdn.net/peacezhi/article/details/107677601