public void checkParameter(String name, String email, String tel) {
		
		ParameterUtils.checkAllEmpty(email, tel);
		
		if (email != null) {
			ParameterUtils.checkEmail(email);
		}
		
		if (tel != null) {
			ParameterUtils.checkPhoneNum(tel);
		}
		
		int num = userInfoDao.getUserInfoNum(name, email, tel);
		
		if (num != 0) {
			throw new BizException(ErrorMessage.Repeated_Registration_CODE, ErrorMessage.Repeated_Registration);
		}
	}