文件的切割与合并（视频文件或者压缩文件）

来源：互联网发布：淘宝客内部优惠券编辑：程序博客网时间：2024/05/19 20:58

public class Test {public static void main(String[] args) throws IOException {// TODO Auto-generated method stubtry {segmentation();   //文件的切割aggregation(); //文件的合并} catch (IOException e) {e.printStackTrace();}}public static void segmentation() throws IOException{//选中的文件地址是       D:\soft\screencapture.zip 大小为197MBFile file=new File("D:\\soft\\screencapture.zip");InputStream in=new FileInputStream(file);OutputStream out=null;byte[] bytes=new byte[(int) (file.length()/5)+1];System.out.println(file.length());for (int i = 0; i < 5; i++) {File file2 =new File("D:\\soft\\screencapture"+i+".zip");out=new FileOutputStream(file2);int len=in.read(bytes);out.write(bytes,0,len);}out.close();in.close();}public static void aggregation() throws IOException{InputStream in=null;OutputStream out=null;for (int i = 0; i < 5; i++) {File file =new File("D:\\soft\\screencapture"+i+".zip");in =new FileInputStream(file);out=new FileOutputStream("D:\\soft\\新.zip",true);int len =-1;byte[] b =new byte[10240];while ((len=in.read(b))!=-1) {out.write(b, 0, len);}}out.close();in.close();}}

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