正则表达式，模拟网络爬虫小例子

package cn.zhengze;

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

public class netbug {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {
		File file = new File("mail.html");
		String regex = "w+@[a-zA-Z0-9]+(.[a-zA-Z]{2,3}){1,3}";
		List<String> mailList = getMails(file,regex);
		for (String mail : mailList) {
			System.out.println(mail);

		}
	}

	private static List<String> getMails(File file,String regex)
			throws IOException {

		BufferedReader bufr = new BufferedReader(new FileReader(file));

		Pattern p = Pattern.compile(regex);
		List<String> list = new ArrayList<String>();
		String line = null;
		while ((line = bufr.readLine()) != null) {
			Matcher m = p.matcher(line);
			while (m.find()) {
				list.add(m.group());
			}

		}
		return list;
	}

}

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!