Java访问url

 try {
                    URL url = new URL("http://baiduu.com");
                    InputStream in =url.openStream();
                    InputStreamReader isr = new InputStreamReader(in);
                    BufferedReader bufr = new BufferedReader(isr);
                    String str;
                    while ((str = bufr.readLine()) != null) {
                        System.out.println(str);
                    }
                    bufr.close();
                    isr.close();
                    in.close();
                    Thread.sleep(100);
                } catch (Exception e) {
                    e.printStackTrace();
                }