网络邮箱地址爬虫

package com.hfxt;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test4 {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		// TODO 自动生成方法存根
		List<String> list=getMails();
		for (String mail : list) {
			System.out.println(mail);
		}

	}
	
	public static List<String> getMails() throws IOException{
		URL url=new URL("http://email.163.com/");
		//读取网页文件
		BufferedReader buff=new BufferedReader(new InputStreamReader(url.openStream()));
		
		//对读取的数据进行匹配，验证符合验证规则的数据
		String rule="\\w+@\\w+(\\.\\w+)+";
		List<String> list=new ArrayList<String>();
		Pattern p=Pattern.compile(rule);
		String line = null;
		while((line=buff.readLine())!=null){
			Matcher m=p.matcher(line);
			while(m.find()){
				list.add(m.group());
			}
		}
		
		return list;
	}

}