3、取邮件

 1 package regex;
 2 
 3 import java.io.BufferedReader;
 4 import java.io.FileNotFoundException;
 5 import java.io.FileReader;
 6 import java.io.IOException;
 7 import java.util.ArrayList;
 8 import java.util.List;
 9 import java.util.regex.Matcher;
10 import java.util.regex.Pattern;
11 
12 public class TestReg03_email {
13     public static void main(String[] args) {
14         BufferedReader br = null;
15         StringBuilder sb = new StringBuilder();
16 
17         try {
18             br = new BufferedReader(new FileReader("G:\\IoTest\\01.htm"));
19             String str = null;
20             while ((str = br.readLine()) != null) {
21                 sb.append(str);
22             }
23             List<String> emails = getEmails(sb.toString());
24             for (String e : emails) {
25                 System.out.println(e);
26             }
27         } catch (FileNotFoundException e) {
28             e.printStackTrace();
29         } catch (IOException e) {
30             e.printStackTrace();
31         } finally {
32             if (br != null)
33                 try {
34                     br.close();
35                 } catch (IOException e) {
36                     e.printStackTrace();
37                 }
38         }
39     }
40 
41     public static List<String> getEmails(String str) {
42         List<String> es = new ArrayList<String>();
43         Pattern p = Pattern.compile("[\\w\\.-]*\\w+@[\\w\\.-]*\\w+\\.\\w{2,5}");
44         Matcher m = p.matcher(str);
45         while (m.find()) {
46             es.add(m.group());
47         }
48         return es;
49     }
50 }