IO 文件夹的拷贝

package FileCopy;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.LinkedList;
import java.util.Queue;

public class CopyFileV2 {
    public static void main(String agrs[]){
        String srcFileName = "F:" + File.separator + "ppt";
        String destFilePath = "D:" + File.separator + "copyFileExam";

//        copy(srcFileName, destFilePath);
        rNoCopy(srcFileName, destFilePath);
        System.out.println("拷贝完成!!!");

    }

    private static void rNoCopy(String fileName, String destFileName){

        Queue<String[]> fPQ = new LinkedList<String[]>();
        String[] s = new String[2];
        s[0] = fileName;
        s[1] = destFileName;
        fPQ.offer(s);

        int i = 0;

        while(!fPQ.isEmpty()){

            for(String[] st : fPQ){
                for(String str : st)
                System.out.println(str);
            }

            System.out.println("\n" + i++);
            String[] filePath = fPQ.poll();

            File file = new File(filePath[0]);
            File destFile = new File(filePath[1]);

            if(!destFile.exists()){
                destFile.mkdirs();
                System.out.println("创建多级列表成功！！！");
            }

            File files[] = file.listFiles();

            for(File f: files){
                if(f.isFile()){
                    fileCopy(f.getPath(), filePath[1] + File.separator + f.getName());
                }
                else if(f.isDirectory()){
                    String[] temps = new String[2]; 

                    temps[0] = f.getPath();
                    temps[1] = filePath[1] + File.separator + f.getName();

                    fPQ.offer(temps);
                }
            }
        }
    }

    private static void copy(String fileName, String destFileName){
        File file = new File(fileName);
        File destFile = new File(destFileName);

        File files[] = file.listFiles();

        if(!destFile.exists()){
            destFile.mkdirs();
        }

        for(File f: files){
            if(f.isFile()){
                fileCopy(f.getPath(), destFileName + File.separator + f.getName());
            }
            else if(f.isDirectory()){
                copy(f.getPath(), destFileName + File.separator + f.getName());
            }
        }

    }

    private static void fileCopy(String fileName, String destFileName){
        System.out.println("正在拷贝文件！！！");
        File file = new File(fileName);
        File destFile = new File(destFileName);

//        InputStream is = null;
//        OutputStream os = null;
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;

        try {
            bis = new BufferedInputStream(new FileInputStream(file));
            bos = new BufferedOutputStream(new FileOutputStream(destFile));

            byte bytes[] = new byte[1024];
            while( bis.read(bytes) != -1 ){
                bos.write(bytes);
                bos.flush();
            }
        } catch (FileNotFoundException e1) {
            e1.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
//                os.flush();
//                is.close();
//                os.close();
                bos.flush();
                bis.close();
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

//        private static void getAllFileList(String fileName){
//            File file = new File(fileName);
//            File files[] = file.listFiles();
//
//            for(File f: files){
//                if(f.isFile()){
//
//                }
//                if(f.isDirectory()){
//                    getAllFileList(f.toString());
//                }
//                else {
//                    System.out.println(f.getName());
//                }
//            }
//
//    }
    }
}

原文地址：https://www.cnblogs.com/854594834-YT/p/10527471.html