OrderDetailPageDTO

{
    "categoryId": 4,
    "commodityId": 5,
    "commodityNum": 2,
    "commodityPrice": 16.5,
    "id": 1,
    "orderId": 4,
    "delFlag": 0,
    "categoryName": "分类名",
    "username": "aring",
    "commodityName": "唐诗300首"
}