正则表达式实例 网页爬虫抓取页面邮箱地址

/*正则表达式实例
网页爬虫抓取页面邮箱地址
*/
import java.io.*;
import java.net.*;
import java.util.regex.*;

public class Regex{
public static void main(String[] args)throws Exception{
getMails(args[0]);
}

public static void getMails(String s)throws Exception{
//URL url = new URL("http://127.0.0.1:8080/regexTest/index.html");
URL url = new URL(s);
URLConnection conn = url.openConnection();
BufferedReader bufIn = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line = null;
//正则表达式表示邮箱
String mail = "\\w+@\\w+(\\.\\w+)+";
Pattern p = Pattern.compile(mail);

while((line = bufIn.readLine())!=null){
Matcher m = p.matcher(line);
while(m.find()){
System.out.println(m.group());
//如需对爬取的邮箱进行任何操作，在此进行
}
}
}
}