Koa2 的安装运行记录（二）

参考 ：koa2-boilerplate    https://github.com/superalsrk/koa2-boilerplate

Ajax Login and Ajax Logout in Koa2, based on koa-passport and passport-local

https://github.com/koajs/koa/wiki   有中间件列表

1、rkusa/koa-passport    https://github.com/rkusa/koa-passport

二、Logging 中间件：

1）(推荐) concurrency-logger - logging requests concurrently and in context

https://github.com/PabloSichert/concurrency-logger

2）、    koa-logger - development style logger

安装：npm install koa-logger --save-dev

代码中增加：
var logger = require('koa-logger')
app.use(logger())

功能类似下列函数：

app.use(async (ctx, next) => {
   const start = new Date();
   await next();
   const ms = new Date() - start;
   console.log(`${ctx.method} ${ctx.url} - ${ms}ms`);
});

3）（暂不考虑） koa-log4 - a wrapper for log4js-node which supports koa middleware