Java进阶文件输入输出实操（图片拷贝）

Java进阶文件输入输出实操（图片拷贝）

• 把某个目录下的全部图片，全部拷贝到另外⼀一个目录

package test;

import domee.chapter6_7.B;

import java.io.*;

public class Ex10_10 {
    
    
    public static void main(String[] args) throws IOException {
    
    
        String dir = "C:\\Users\\123\\Desktop\\test";
        creatFile(dir);
        File file = new File(dir+"\\img");
        File[] files = file.listFiles();
        for (File file1 : files){
    
    
            String name = file1.getName();
            System.out.println(name);
            copy(file.getAbsolutePath()+"\\"+name,dir+"\\copy\\"+name);
        }

    }



    public static void creatFile(String dir){
    
    
        File file = new File(dir+"\\copy");
        file.mkdir();
    }


    public static void copy(String from,String to)throws IOException {
    
    


        InputStream inputStream = new FileInputStream(from);
        OutputStream outputStream = new FileOutputStream(to);
        BufferedInputStream bufferedInputStream = new BufferedInputStream(inputStream);
        BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(outputStream);
        byte[] bytes = new byte[inputStream.available()];
        int size ;
        while ( (size = inputStream.read(bytes))!= -1){
    
    
            bufferedOutputStream.write(bytes,0,size);
        }
        bufferedInputStream.close();
        bufferedOutputStream.close();



    }
}