摘要：
const Koa = require('koa'); const Router = require('koa-router'); const bodyparser = require('koa-bodyparser'); var mongoose = require('mongoose'); va 阅读全文
摘要：
1.confused 数据库服务器未开启 2. MongoNetworkError: failed to connect to server [localhost:27017] on first connect [[object Object]] 链接数据库的时候 将url 写成了 localhos 阅读全文