cookie&session浅析

cookie基本用法

let http = require('http');
let querystring= require('querystring');
http.createServer(function (req, res) {
    //设置cookie 读取cookie
    if(req.url==='/read'){
        let cookies = querystring.parse(req.headers.cookie,';')|| {};
        res.end(JSON.stringify(cookies))
    }
    if(req.url==='/white'){
        //domain 默认只针对某个域名
        // res.setHeader('Set-Cookie',['name=zf','age=10']);
        res.setHeader('Set-Cookie','name=zf; ',);
        res.end('white,ok')
    }
}).listen(3000);

session基本用法

let http = require('http');
let querystring = require('querystring');
let uuid = require('uuid');
console.log(uuid.v4());
// 起个店的名字
let sessionId = 'zhufengwash';
//  存放用户 和 信息的映射表
let session = {}// 存到数据 redis 里 ／ mongo
// 用唯一表示 去服务端找到对应的关系
// 用户登录 session  && jwt  (购物车 cookie／ localstorage)
http.createServer(function(req,res){
    if(req.url === '/towash'){
       let cookies =  querystring.parse(req.headers.cookie,'; ') || {};
       let username = cookies[sessionId];
        if(username && session[username]){ // 101
            session[username].mny -=10;
            res.setHeader('Content-Type','text/html;charset=utf8');
            res.end(`当前您的额度是${session[username].mny}`);
        }else{
            // 你是第一次来到店里的
            let cardId = uuid.v4();
            res.setHeader('Set-Cookie',`${sessionId}=${cardId}; httpOnly=true`);
            session[cardId] = {
                mny:100
            }
            res.setHeader('Content-Type','text/html;charset=utf8');
            res.end(`当前您的额度是${session[cardId].mny}`);
        }
    }
}).listen(3000);