3.Session安装配置

//--------------koa2设置---------------------------
1.安装：
npm install koa-generic-session --save-dev

2.修改app.js
var session = require('koa-generic-session');

app.keys = ['my secret key'];
app.use(session());

3.代码
let user = {};
user.id=1;
user.nicheng = '张三';
ctx.session.user = user;
console.log(ctx.session.user);

console.log(ctx.session);
console.log(ctx.session.user);
-------------------设置session.loginbean代替传入的数据user-----------
ctx.session.loginbean = user;
ctx.body='登陆成功'