import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.net.URL;import java.net.URLConnection;import java.util.zip.ZipEntry;import java.util.zip.ZipOutputStream;public class DownUrl {    public static String downloadUrl="http://www.baidu.com/img/baidu_sylogo1.gif";    public static String downloadUrl2="http://www.baidu.com/img/baidu_sylogo1.gif";    public static String downloadUrl3="http://www.baidu.com/img/baidu_sylogo1.gif";        /**     * @param args     * @throws Exception      */    public static void main(String[] args) throws Exception {        downloadZip();      }public static void downloadZip() throws Exception{        long start=System.currentTimeMillis();        String [] urls={downloadUrl,downloadUrl2,downloadUrl3};        ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream("D:/1.zip"));                for(String u:urls){            String ext=u.substring(u.lastIndexOf("."), u.length());            String fileName=""+System.currentTimeMillis()+ext;            URL url = new URL(u);            URLConnection c = url.openConnection();            c.connect();            int fileLength=c.getContentLength();            System.out.println("file size:"+fileLength);                        InputStream is = c.getInputStream();                        outStream.putNextEntry(new ZipEntry(fileName));                        byte[] buffer=new byte[2048];            int len;            while((len=is.read(buffer))!=-1){                outStream.write(buffer,0,len);            }           //关闭流，省略        }        //关闭流，省略        long end=System.currentTimeMillis();        System.out.println("zip ok ,use time:"+(end-start)+"hao miao ");            }        }