javascript - 未处理的 promise 拒绝警告 : Error: The client is closed in NodeJS and Redis

Question

我正在实现 Access Token和 Refresh Token使用 JWT NodeJS中的登录功能应用。我正在尝试使用 Redis存储Refresh Token ，但我得到以下代码:
redis.js

const redis = require('redis');

require('dotenv').config({ path : __dirname + '/../config/env/.env' });

let redisClient;

redisClient = redis.createClient(6379, '127.0.0.1');

module.exports = redisClient;

authRoute.js

'use strict';

const JwtUtil     = require('../../middlewares/jwt-util');
const redisClient = require('../../middlewares/redis');

const authRouter = require('express').Router();

const jwt = new JwtUtil(); 

authRouter.post('/user-token/generate', (req, res, next) => {
    const accessToken = jwt.sign(req.body);

    const refreshToken = jwt.refresh();

    redisClient.set(req.body.id, refreshToken);

    res.status(200).send({
        result : 'success',
        data : {
            accessToken,
            refreshToken
        }
    });
});

module.exports = authRouter;

我打印了几份日志，但似乎 redisClient.set(req.body.id, refreshToken);在 authRoute.js .里面好像有错误。

UnhandledPromiseRejectionWarning: Error: The client is closed

(node:24640) UnhandledPromiseRejectionWarning: Unhandled promiserejection. This error originated either by throwing inside of an asyncfunction without a catch block, or by rejecting a promise which wasnot handled with .catch(). To terminate the node process on unhandledpromise rejection, use the CLI flag --unhandled-rejections=strict(see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode).(rejection id: 2) (node:24640) [DEP0018] DeprecationWarning: Unhandledpromise rejections are deprecated. In the future, promise rejectionsthat are not handled will terminate the Node.js process with anon-zero exit code.

Access Token和 Refresh Token正常发出。此外，以下代码不起作用。我不确定我应该如何重写代码。我应该怎么办？

redisClient.on('connection', () => { 
  console.info('Redis connected!');
}

虽然我使用的是 Windows , 我下载了 Redis , 执行了 ping测试，并确认服务器正在运行。

Answer 1

至于现在我能够部分解决获取数据，但是对于 redis v4 仍然没有完成设置数据。 #redis #v4 #redisv4

app.get('/data',(req,res) => {
     // check in redis first
    //console.log(">>>>url",url)
    (async () => {
        const userInput = (req.query.country).trim()
        const url = `https://en.wikipedia.org/w/api.php?action=parse&format=json&section=0&page=${userInput}`
   
        const client = createClient({
            host:'localhost',
        port:6379});
      
        client.on('error', (err) => console.log('Redis Client Error', err));
      
        await client.connect();

        const response = await  client.get(`${userInput}`)
        if(response){
            const output = JSON.parse(response);
            res.send(output)
        }
      })();

})