import java.io.*; public class CopyFile { public static void main(String[] args) { //1、创建源 File in = new File("d:/test/1111.mp4"); File out = new File("d:/test/222.mp4"); //2、选择流 InputStream is = null; OutputStream os = null; try { //3、操作数据 is = new FileInputStream(in); os = new FileOutputStream(out); byte[] buf = new byte[1024*1024]; int length = -1;//记录实际读取到的长度 while ((length = is.read(buf)) != -1) { os.write(buf, 0, length); } os.flush(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally {//4、关闭流(先打开的后关闭) try { if (os != null) os.close(); } catch (IOException e) { e.printStackTrace(); } try { if (is != null) is.close(); } catch (IOException e) { e.printStackTrace(); } } } }
原文地址:https://www.cnblogs.com/zhengxl5566/p/10360709.html
时间: 2024-10-26 20:50:30