java 抓取网页图片并保存

public class CatchWebPicture {
  @Test
  public void test_getWebPicture() {
    try {
      File path = null;
      URL url = null;
      for(int i=0;i<72;i++){
        url = new URL("http://www.skyatnightmagazine.com/360/wifi%20SCOPE/img/threesixty_"+array[i]+".jpg");
        URLConnection urlCon = url.openConnection();
        String str = url.getFile();
        StringTokenizer st = new StringTokenizer(str, "/");
        String sub = null;
        while (st.hasMoreTokens()) {
          sub = st.nextToken();
        }
        path = new File("C:/Users/Administrator/Desktop/threesixty/" + sub);
        InputStream is = urlCon.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);
        FileOutputStream fos = new FileOutputStream(path);
        BufferedOutputStream bos = new BufferedOutputStream(fos);

        int read;
        while ((read = bis.read()) != -1) {
          bos.write(read);
        }
        bos.close();// 不关闭，输出流不刷新，有可能得到无效图片
      }
    } catch (MalformedURLException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}