我的需求是从一堆文档中提取出qq邮箱,写了这篇帖子,希望能帮助和我有一样需求的人,谢谢!......
import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.util.regex.Matcher; import java.util.regex.Pattern; public class GetEmail { public static void getEmail() { File file = new File("E://itxm/email.txt"); try{ BufferedReader br = new BufferedReader(new FileReader(file));//构造一个BufferedReader类来读取文件 String s = null; while((s = br.readLine())!=null){//使用readLine方法,一次读一行 Pattern pattern = Pattern.compile("[^0-9]"); Matcher matcher = pattern.matcher(s); String email = matcher.replaceAll(""); if(!"".equals(email)&&email.length()>5){ System.out.println(email+"@qq.com"); } } br.close(); }catch(Exception e){ e.printStackTrace(); } } public static void main(String[] args) { getEmail(); } }