从文件中获取email

/**
  * 从文件中获取email
  * @throws Exception
  */
 public static void getMails() throws Exception {

  BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("f:1.txt"), "UTF-8"));

  String line = null;

  String mailreg = "\\w+@\\w+(\\.\\w+)+";

  Pattern p = Pattern.compile(mailreg);

  while (null != (line = br.readLine())) {

   Matcher m = p.matcher(line);

   while (m.find()) {
    System.out.println(m.group());
   }
  }

 }