网络爬虫

/*网络爬虫--爬邮件*/
import java.io.*;
import java.util.regex.*;

class Main {

    public static void main(String[] args) throws Exception {
        getMails();
    }

    public static void getMails() throws Exception {

        BufferedReader bufr = new BufferedReader(new FileReader("mail.txt"));
        String line = null;
        String mailreg = "\\w+@\\w+(\\.\\w+)+";
        Pattern p = Pattern.compile(mailreg);

        while((line=bufr.readLine())!=null) {
            Matcher m = p.matcher(line);
            while(m.find())
                System.out.println(m.group());
        }
    }
}