一個簡單的獲取百度貼吧上ID的java程序

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.util.HashSet;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TiebaID {

	public static void main(String[] args) {
		HttpURLConnection httpUrlConnection = null;
		InputStream is = null;
		BufferedReader br = null;
		String url = null;
		StringBuffer sb;
		try {
			url = "http://tieba.baidu.com/f?kw=java";
		} catch (Exception e) {
			e.printStackTrace();
		}

		try {
			httpUrlConnection = (HttpURLConnection) new URL(url)
					.openConnection(); // 創建連接
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

		try {
			httpUrlConnection.setRequestMethod("GET");
		} catch (ProtocolException e) {
			e.printStackTrace();
		}

		try {
			httpUrlConnection.connect(); // 建立連接
		} catch (IOException e) {
			e.printStackTrace();
		}

		try {
			is = httpUrlConnection.getInputStream(); // 讀取輸入流
			sb = new StringBuffer();
			br = new BufferedReader(new InputStreamReader(is));
			String string;
			while ((string = br.readLine()) != null) {
				sb.append(string);
			}
			string = "<a href=\"/i/sys/jump.*?</a>";
			Pattern pattern = Pattern.compile(string);
			Pattern pattern1 = Pattern.compile(">.*<");
			Matcher matcher = pattern.matcher(sb.toString());
			HashSet<String> hs = new HashSet<String>();
			while (matcher.find()) {
				String s = matcher.group();
				Matcher m = pattern1.matcher(s);
				if (m.find()) {
					String id = m.group();
					hs.add(id.substring(1, id.length() - 1));
				}
			}
			for (String s : hs) {
				System.out.println("@" + s);
			}
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			try {
				br.close();
				is.close();
				httpUrlConnection.disconnect();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
}