安装依赖 ： express-session      connect-redis     redis

创建 redis 服务

const redis = require('redis')
const {REDIS_CONF} =require('../conf/db')

const redisCli = redis.createClient(REDIS_CONF.port, REDIS_CONF.host)
redisCli.on('error', err => {
    console.error(err)
})

module.exports = redisCli

app.js文件中使用

const express = require('express');
const session = require('express-session')
const RedisStore = require('connect-redis')(session) // 这里直接把session传进去

const app = express();

const redisClient = require('./db/redis') // 引入之前写好得redis服务

const sessionStore = new RedisStore({
    client: redisClient
})
app.use(session({
    secret: 'express_Server2375#', // 类似密钥一样得东西
    cookie: {
        // path: '/', // 默认配置
        // httpOnly: true, // 默认配置
        maxAge: 24 * 60 * 60 * 1000
    },
    store: sessionStore
}))



// .....