Android从网页的源码中特定标签中取值

最近想要做一个关于彩票的项目，好用的彩票接口都要收费，免费的次数也有限，于是从网上找到相关开奖网页，想从网页的代码中获得想要的数据，直接上代码。

import android.app.Activity;import android.os.Bundle;import android.os.StrictMode;import android.widget.ArrayAdapter;import android.widget.ListView;import java.util.ArrayList;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;public class MainActivity extends Activity {    private String path = "http://baidu.lecai.com/lottery/draw/list/528/?agentId=5572";    ListView listview;    List<String> time=new ArrayList<>();    List<String> number=new ArrayList<>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //加上这两句代码 好像可以在主线程中进行网络访问/**************************************************/         StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()                .detectDiskReads().detectDiskWrites().detectNetwork()                .penaltyLog().build());        StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()                .detectLeakedSqlLiteObjects().detectLeakedClosableObjects()                .penaltyLog().penaltyDeath().build());/**************************************************/         listview = (ListView) this.findViewById(R.id.ls);                try {        String htmlContent  =  HtmlService.getHtml(path);                    //彩票开奖时间    Pattern p = Pattern.compile("<td class=\"td1\">(.*?)</td>");                    Matcher m = p.matcher(htmlContent);                    while(m.find()){                        time.add(m.group(1));                    }                    time.remove(time.get(0));  ArrayAdapter<String> timeAdapter=new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,time);                    listview.setAdapter(timeAdapter);                } catch (Exception e) {                 System.out.println("程序发生了异常");                }        //彩票开奖号码//        Pattern p = Pattern.compile("<span class=\"ball_1\">(.*?)</span>");//        Matcher m = p.matcher(htmlContent);//        while(m.find()){//            number.add(m.group(1));//        }//        ArrayAdapter<String> timeAdapter=new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_list_item_1,number);//        listview.setAdapter(timeAdapter);////                    textView.setText(m.group(1));////    } catch (Exception e) {//        //  textView.setText("程序出现异常："+e.toString());//    }    }}import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;public class HtmlService {    public static String getHtml(String path) throws Exception {        // 通过网络地址创建URL对象        URL url = new URL(path);        // 根据URL        // 打开连接，URL.openConnection函数会根据URL的类型，返回不同的URLConnection子类的对象，这里URL是一个http，因此实际返回的是HttpURLConnection        HttpURLConnection conn = (HttpURLConnection) url.openConnection();        // 设定URL的请求类别，有POST、GET 两类        conn.setRequestMethod("GET");        //设置从主机读取数据超时（单位：毫秒）        conn.setConnectTimeout(5000);        //设置连接主机超时（单位：毫秒）        conn.setReadTimeout(5000);        // 通过打开的连接读取的输入流,获取html数据        InputStream inStream = conn.getInputStream();        // 得到html的二进制数据        byte[] data = readInputStream(inStream);        // 是用指定的字符集解码指定的字节数组构造一个新的字符串        String html = new String(data, "utf-8");        return html;    }    /**     * 读取输入流，得到html的二进制数据     *     * @param inStream     * @return     * @throws Exception     */    public static byte[] readInputStream(InputStream inStream) throws Exception {        ByteArrayOutputStream outStream = new ByteArrayOutputStream();        byte[] buffer = new byte[1024];        int len = 0;        while ((len = inStream.read(buffer)) != -1) {            outStream.write(buffer, 0, len);        }        inStream.close();        return outStream.toByteArray();    }}

还需要导入几个jar包，jsuop.jar,org.apache.http jar包