ORDER_STATE_CANCELED是{@struct/Order Order}结构中的Status属性的值，表示订单状态为已经取消状态。
number
ORDER_STATE_CANCELED的值为2。
{@var/ORDER_STATE/ORDER_STATE_PENDING ORDER_STATE_PENDING}, {@var/ORDER_STATE/ORDER_STATE_CLOSED ORDER_STATE_CLOSED}, {@var/ORDER_STATE/ORDER_STATE_UNKNOWN ORDER_STATE_UNKNOWN}
ORDER_STATE_CLOSED ORDER_STATE_UNKNOWN