public class TestIO { public static void main(String[] args) { // TODO Auto-generated method stub try { String in="C:\Users\Pei\Desktop\b14b9472a2c83047e35c31c91fbb88e3.mp4"; String out="C:\Users\Pei\Desktop\电视.mp4"; BufferedInputStream bis=new BufferedInputStream(new FileInputStream(new File(in))); BufferedOutputStream bos=new BufferedOutputStream(new FileOutputStream(new File(out))); byte[]bt=new byte[1024]; int count; while((count=bis.read(bt))!=-1){ bos.write(bt, 0, count); } bis.close(); bos.close(); } catch (Exception e) { e.printStackTrace(); } } }