1、验证邮箱是否合法

/**	 * 校验邮箱是否合法	 * 	 * @param email	 * @return	 */	public static boolean isEmail(String email) {		String check = "^[_A-Za-z0-9-]+(\\.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(\\.[A-Za-z0-9]+)*(\\.[A-Za-z]{2,})$";		Pattern regex = Pattern.compile(check);		Matcher matcher = regex.matcher(email);		return matcher.matches();	}

^-{0,1}\d*\.?\d*$|^-{0,1}\d*\.?\d*%$

总结