Android抓取CSDN首页极客头条内容完整实例

HttpClient httpClient = new DefaultHttpClient(); //创建一个HttpClient  HttpGet httpGet = new HttpGet(“http://www.csdn.net/”); //创建一个GET请求  HttpResponse response = httpClient.execute(httpGet); //发送GET请求，并响应内容 

<li><a  MatchResult mr=m.toMatchResult();   Map<String, Object> map = new HashMap<String, Object>();   map.put("title", mr.group(1));//找到后group(1)是表达式第一个括号的内容   map.put("url", mr.group(2));//group(2)是表达式第二个括号的内容   result.add(map); } 

public class MainActivity extends ListActivity {	ListView listview;	Handler handler;	List<Map<String, Object>> data;	final String CSDNURL = "http://www.csdn.net/";	@Override 	  protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		handler = getHandler();		ThreadStart();	}	/**    * 新开辟线程处理联网操作    */	private void ThreadStart() {		new Thread() {			public void run() {				Message msg = new Message();				try {					data = getCsdnNetDate();					msg.what = data.size();				}				catch (Exception e) {					e.printStackTrace();					msg.what = -1;				}				handler.sendMessage(msg);			}		}		.start();	}	/**    * 联网获得数据    * @return 数据    */	private List<Map<String, Object>> getCsdnNetDate() {		List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();		String csdnString = http_get(CSDNURL);		//<li><a   * 处理联网结果，显示在listview    * @return    */	private Handler getHandler() {		return new Handler(){			public void handleMessage(Message msg) {				if (msg.what < 0) {					Toast.makeText(MainActivity.this, "数据获取失败", Toast.LENGTH_sHORT).show();				} else {					initListview();				}			}		}		;	}	/**    * 在listview里显示数据    * @author Lai Huan    * @created 2013-6-20    */	private void initListview() {		listview = getListView();		SimpleAdapter adapter = new SimpleAdapter(this, data, 		        android/245586.html">android.R.layout.simple_list_item_1, new String[] { "title"}, 		        new int[] { android.R.id.text1 });		listview.setAdapter(adapter);		listview.setOnItemClickListener(new OnItemClickListener() {			@Override 			      public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 			          long arg3) {				Map<String, Object> map = data.get(arg2);				String url = (String)(map.get("url"));				Intent intent = new Intent(Intent.ACTION_VIEW);				intent .setData(Uri.parse(url));				startActivity(intent);			}		}		);	}	/**    * get请求URL，失败时尝试三次    * @param url 请求网址    * @return 网页内容的字符串    */	private String http_get(String url) {		final int RETRY_TIME = 3;		HttpClient httpClient = null;		HttpGet httpGet = null;		String responseBody = "";		int time = 0;		do {			try {				httpClient = getHttpClient();				httpGet = new HttpGet(url);				HttpResponse response = httpClient.execute(httpGet);				if (response.getStatusLine().getStatusCode() == 200) {					//用utf-8编码转化为字符串 					byte[] bResult = EntityUtils.toByteArray(response.getEntity());					if (bResult != null) {						responseBody = new String(bResult,"utf-8");					}				}				break;			}			catch (IOException e) {				time++;				if (time < RETRY_TIME) {					try {						Thread.sleep(1000);					}					catch (InterruptedException e1) {					}					continue;				}				e.printStackTrace();			}			finally {				httpClient = null;			}		}		while (time < RETRY_TIME);		return responseBody;	}	private HttpClient getHttpClient() {		HttpParams httpParams = new BasicHttpParams();		//设定连接超时和读取超时时间 		HttpConnectionParams.setConnectionTimeout(httpParams, 6000);		HttpConnectionParams.setSoTimeout(httpParams, 30000);		return new DefaultHttpClient(httpParams);	}}