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package KOBE;

import java.io.File;

import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; import java.util.zip.ZipOutputStream;

public class zipys {

static void compress() { File bys=new File(“zip”); File ysb=new File(“mr.zip”); try { FileOutputStream fo=new FileOutputStream(ysb); //输出到ysb文件中 ZipOutputStream zo=new ZipOutputStream(fo); //感觉是：压缩fo。 if(bys.isDirectory()) { for(File f:bys.listFiles()) { addentry(zo, “”, f); } }else { addentry(zo, “”, bys); } } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } static void addentry(ZipOutputStream zo,String base,File bys) { //创建条目的方法 if(bys.isDirectory()) { for(File file:bys.listFiles()) { addentry(zo, base+bys.getName()+File.separator,file); } }else { //压缩的方法 byte by[]=new byte[1024]; try { FileInputStream fi=new FileInputStream(bys); int count=-1; zo.putNextEntry(new ZipEntry(base+bys.getName())); while((count=fi.read(by))!=-1) { zo.write(by); zo.flush(); } zo.closeEntry(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } static void decompress() { File dir=new File(“zip2”); File yuan=new File(“qyb.zip”); byte b[]=new byte[1024]; try { FileInputStream fi=new FileInputStream(yuan); ZipInputStream zis=new ZipInputStream(fi); while(true) { ZipEntry en=zis.getNextEntry(); File f=new File(dir,en.getName()) ; //把创建的条目，放到dir文件中 if(!f.getParentFile().exists()) { f.getParentFile().mkdirs(); } int count=-1; FileOutputStream fo=new FileOutputStream(f); while((count=zis.read(b))!=-1) { fo.write(b); fo.flush(); } fo.close(); zis.closeEntry(); } } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String[] args) { decompress(); } }