明天补充
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 }
程序效果
