抓取淘宝商品信息返回json格式，还可返回一种商品的数据结构。不仅可查询单个商品还可根据关键词抓取，会返回排名信息-Crawl Taobao commodity information return json format, it can also return the data structure of a commodity. Not only can query a single commodity can also be based keyword crawl ranking infor