后台验证输入的邮箱是否合法

/**  * 验证输入的邮箱格式是否符合  * @param email  * @return 是否合法  */  public static boolean emailFormat(String email)  {  boolean tag = true;         final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";         final Pattern pattern = Pattern.compile(pattern1);         final Matcher mat = pattern.matcher(email);         if (!mat.find()) {             tag = false;         }         return tag;  }