【Java字符流和文件类实现目录拷贝】

import java.io.*;

public class CopyDirectoryTest {
    public static void main(String[] args) {
        long startTime=System.currentTimeMillis();
        File src=new File("Z:/Edge download");//需要拷贝的目标目录
        //System.out.println(src.getAbsolutePath());
        File term=new File("C:/Edge download");//需要粘贴的目录位置
        copyDirectory(src,term);
        long endTime=System.currentTimeMillis();
        System.out.println("总用时："+(endTime-startTime)+"毫秒");
    }
    public static void copyDirectory(File srcDir,File termDir){
        termDir.mkdir();
        if (srcDir.listFiles().length==0) return;
        File temp=null;
        for (File file:
             srcDir.listFiles()) {
            if (file.isDirectory()){
                temp=new File(termDir.getAbsoluteFile()+"/"+file.getName());
                temp.mkdir();
                copyDirectory(file,temp);
            }else if(file.isFile()){
                temp=new File(termDir.getAbsoluteFile()+"/"+file.getName());
                copy(file.getAbsolutePath(),temp.getAbsolutePath());
            }else return;
        }
    }
    public static void copy(String srcName,String termName){//文件拷贝
        FileInputStream in=null;
        FileOutputStream out=null;
        try {
            in=new FileInputStream(srcName);
            out=new FileOutputStream(termName);
            byte[] bytes=new byte[1024*1024];
            int readCount=0;
            while((readCount=in.read(bytes))!=-1){
                out.write(bytes,0,readCount);
            }
            out.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(in!=null){
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if(out!=null){
                try {
                    out.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}