爬网页获取电话号码

 1 import java.io.BufferedReader; 2 import java.io.IOException; 3 import java.io.InputStream; 4 import java.io.InputStreamReader; 5 import java.net.URL; 6 import java.net.URLConnection; 7 import java.util.regex.Matcher; 8 import java.util.regex.Pattern; 9 10 public class URLTest {11 12 ????private URLConnection connection = null;13 ????14 ????public String getDoucument(String url) throws IOException {15 ????????16 ????????URL newUrl = new URL(url);17 ????????connection = newUrl.openConnection();18 ????????InputStream is = connection.getInputStream();19 ????????InputStreamReader isr = new InputStreamReader(is);20 ????????BufferedReader br = new BufferedReader(isr);21 ????????22 ????????String line = "";23 ????????StringBuffer sb = new StringBuffer();24 ????????25 ????????while( (line = ?br.readLine()) != null) {26 ????????????sb.append(line +"\n");27 ????????}28 ????????29 ????????return sb.toString();30 ????????31 ????}32 ????33 ????public String MyFilter( String string ) {//内容过滤器-获取网页上的电话，没有去重34 ????????35 ????????String regex = "18[\\d]{9}";36 ????????Pattern pattern = Pattern.compile(regex);37 ????????Matcher matcher = pattern.matcher(string);38 ????????39 ????????String result = "";40 ????????while(matcher.find()) {41 ????????????result += matcher.group()+"\n";42 ????????}43 ????????44 ????????return result;45 ????}46 ????47 ????public static void main(String[] args) throws IOException {48 ????????49 ????????URLTest test = new URLTest();50 ????????String page = test.getDoucument("https://power.baidu.com/question/1511959129473915060.html?qbl=relate_question_1");51 ????????String result = test.MyFilter(page);52 // ???????System.out.println(page);53 ????????54 ????????if ( result != null ) {55 ????????????System.out.println("从该网页上找到的号码：\n"+result);56 ????????}57 ????????else {58 ????????????System.out.println("该网页上没有电话号码");59 ????????}60 ????????61 ????}62 }