摘要：
let pipeline = [{ $lookup: { from: "user_person", localField: "cardnumber", foreignField: "cardnumber", as: "right_person" } }, {"$unwind":"$right_per 阅读全文
摘要：
var sd = require('silly-datetime');//引入 var createtime = sd.format(percard.timeCreated, 'YYYY-MM-DD HH:mm:ss');//percard json 对象装换为年月日，时分秒 var createt 阅读全文