/**
   * 读取页面信息
   * @param page 页面的URL
   * @param charset 页面的编码类型
   * @return 页面的字符串，注意换行已经被默认去掉了，如果需要，请看代码的注释部分
   */
  public static String getPage(String page, String charset) {
    try {
      URL url = new URL(page);
      HttpURLConnection con = (HttpURLConnection) url.openConnection();
      BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream(), charset));
      StringBuilder b = new StringBuilder();
      String line;
      while ((line = reader.readLine()) != null) {
        b.append(line);
        // b.append("\r\n"); // 默认这里没有保存换行，而是让所有的字符出现在一行里面。如果需要，请去掉前面的注释
      }
      return b.toString();
    } catch (FileNotFoundException ex) {
      System.out.println("NOT FOUND:" + page);
      return null;
    } catch (ConnectException ex) {
      System.out.println("Timeout:" + page);
      return null;
    } catch (Exception ex) {
      ex.printStackTrace();
      return null;
    }
  }

public static void main(String[] args) {
        String url = "http://www.baidu.com/s?wd=java";
        String str = getPage(url,"gbk");
        String reg = "<table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">.*?" +
                "<a.*? href=\"(.*?)\".*?>(.*?)</a>.*?</table>";
        Pattern p = Pattern.compile(reg,Pattern.CASE_INSENSITIVE | Pattern.DOTALL);
        Matcher m = p.matcher(str);
        int i = 0;
        while(m.find())
        {
            System.out.println("第"+i+"个标题："+m.group(2).replaceAll("<.*?>", ""));
            System.out.println("第"+i+"个连接："+m.group(1));
            i++;
            System.out.println();
        }
    }

    /**
     * 读取页面信息
     * @param page 页面的URL
     * @param charset 页面的编码类型
     * @return 页面的字符串，注意换行已经被默认去掉了，如果需要，请看代码的注释部分
     */
    public static String getPage(String page, String charset) {
        try {
            URL url = new URL(page);
            HttpURLConnection con = (HttpURLConnection) url.openConnection();
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    con.getInputStream(), charset));
            StringBuilder b = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                b.append(line);
                b.append("\r\n"); 
            }
            return b.toString();
        } catch (FileNotFoundException ex) {
            System.out.println("NOT FOUND:" + page);
            return null;
        } catch (ConnectException ex) {
            System.out.println("Timeout:" + page);
            return null;
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }