java爬虫--使用正则表达式获取网页中的email

package com.enation.newtest;
import java.io.*;
import java.util.regex.*;
import java.net.*;

public class  MailTest{
     public static void main(String[] args) throws Exception{
         getMailAddr();
     }

     public static void getMailAddr()throws Exception{
         URL url=new URL("http://blog.sina.com.cn/s/blog_515617e60101e151.html");
         URLConnection con=url.openConnection();

         BufferedReader bufIn=new BufferedReader(new InputStreamReader(con.getInputStream()));
         BufferedWriter bufw=new BufferedWriter(new FileWriter(new File("D:\360Downloads\mailaddress2.txt")));
         String str=null;
         String regex="[a-zA-Z0-9_]{6,12}@[a-zA-Z0-9]+(.[a-zA-Z]+)+";

         Pattern p=Pattern.compile(regex);
         System.out.println("start");
         while((str=bufIn.readLine())!=null) {
            Matcher m=p.matcher(str);
            while(m.find()){
                String ss=m.group();
                bufw.write(ss,0,ss.length());
                bufw.newLine();
                bufw.flush();
            }
         }
         System.out.println("end");
     }
}

获取网页内容，并将页面中的邮件地址存存放在指定的路径中，写入到txt文件里