list<delipromotionnode> delipromotionnodechildren = delipromotionnode.getchildren(); for (int i = 0; i < delipromotionnodechildren.size(); i++) { delipromotionnode promotionnode = delipromotionnodechildren.get(0); integer paymentdays = promotionnode.getpolicyinfo().getpaymentdays(); if (deliariesaccounttimerule.delivery_time.equals(data.getaccounttimerule()) && null == paymentdays) { throw pamirsexception.construct(deliariespromotionexpenumerate.biz_error).setmsg("记账时间规则为按发货时间结算，指定账期天数必填").errthrow(); } } 优化这段代码