koa session

1、安裝
	cnpm install koa-session --save
	
2、引入
	const session=require('koa-session');

3、配置session
	app.keys = ['some secret hurr'];

	const CONFIG = {
	    key: 'koa.sess',
	    maxAge: 86400000,
	    autoCommit: true,    /** (boolean) automatically commit headers (default true) */
	    overwrite: true,     /** (boolean) can overwrite or not (default true) */
	    // httpOnly: true,   /** (boolean) httpOnly or not (default true) */
	    signed: true,        /** (boolean) signed or not (default true) */
	    rolling: true,       /** 每次請求重新設置時間*/
	    renew: false,        /** 請求時在快要過期時重新設置cookie*/
	    sameSite: null,      /** (string) session cookie sameSite options (default null, don't set it) */
	  };
	   
	  app.use(session(CONFIG, app));

4、設置session
	ctx.session.鍵名=值;

5、讀取session
	ctx.session.鍵名

代碼示例:

const Koa=require('koa');
const Router=require('koa-router');
// const views=require('koa-views');
const commonm=require('./public/common');
const bodyParser=require('koa-bodyparser');
const static=require('koa-static');
const render = require('koa-art-template');
const path=require('path');
const session=require('koa-session');

const app=new Koa();
const router=new Router();

app.keys = ['some secret hurr'];

const CONFIG = {
    key: 'koa.sess', /** (string) cookie key (default is koa.sess) */
    /** (number || 'session') maxAge in ms (default is 1 days) */
    /** 'session' will result in a cookie that expires when session/browser is closed */
    /** Warning: If a session cookie is stolen, this cookie will never expire */
    maxAge: 86400000,
    autoCommit: true, /** (boolean) automatically commit headers (default true) */
    overwrite: true, /** (boolean) can overwrite or not (default true) */
    // httpOnly: true, /** (boolean) httpOnly or not (default true) */
    signed: true, /** (boolean) signed or not (default true) */
    rolling: true, /** 每次請求重新設置時間*/
    renew: false, /** 請求時在快要過期時重新設置cookie*/
    sameSite: null, /** (string) session cookie sameSite options (default null, don't set it) */
  };
   
  app.use(session(CONFIG, app));
//配置模板引擎
// app.use(views('views',{extension:"ejs" })); //文件後綴必須爲.ejs
// app.use(views('views',{map:{html:'ejs'}}));
render(app, {
    root: path.join(__dirname, 'views'), //配置模板引擎路徑
    extname: '.html',  //以什麼後綴結尾
    debug: process.env.NODE_ENV !== 'production' //在開發階段開啓debug
  });

//配置static
app.use(static('static'));

app.use(router.routes())
    .use(router.allowedMethods());



app.use(bodyParser());

router.get('/',async(ctx,next)=>{
    await ctx.render("index",{
        title:'jeff',
        info:"<h2 style='color:red'>渲染</h2>"
    });
    console.log(ctx.session.uname);
})

router.get('/news',async(ctx,next)=>{
    
    await ctx.render('news',{
        names:"jeff"
    })
    
    ctx.session.uname='jeff';
})

//路由中間件
router.get('/det',async(ctx,next)=>{
    // ctx.body='det1';
    console.log('aaa');
    await next();
})

router.get('/det',async(ctx,next)=>{
    ctx.body='det2';
  
})

router.post('/info',async (ctx,next)=>{
    // var data=await commonm.Posts(ctx);
    var data=ctx.request.body.name;
    ctx.body=data;
})

router.get('/msg',async(ctx,next)=>{
    ctx.body=ctx.query.id;
})

//動態路由
router.get('/home/:aid/:aic',async(ctx,next)=>{
    ctx.body=ctx.params.aid+ctx.params.aic;
})

app.listen(3000,()=>{
    console.log('this koa server is running at http://localhost:3000/');
})