苏宁 http://quan.suning.com/getSysTime.do 淘宝 http://api.m.taobao.com/rest/api3.do?api=mtop.common.getTimestamp 华为 https://buy.vmall.com/getSkuRushbuyInfo.json 拼多多 https://api.pinduoduo.com/api/server/\_stm
