nodejs连接redis

redis版本5.0.6

nodejs依赖包redis版本2.6.2

import redis from 'redis'const redisLink = 'redis://127.0.0.1:6379'
const pwd = '289181'
const opts = {auth_pass: pwd,
}
const redisClient = redis.createClient(redisLink, opts)redisClient.on('error', err => console.log('------ Redis connection failed ------' + err)).on('connect', () => console.log('------ Redis connection succeed ------'))export default {redis: redis, redisClient: redisClient, 
}

nodejs连接mongoDB

nodejs依赖包mongoose版本4.6.0 ; mongoomise版本0.0.8；bluebird版本3.4.6；
nodejs v12.13.0
mongoDB 版本4.2.1

在mongoDB中执行以下命令创建用户：

db.createUser({ user:'admin',pwd:'test123',roles:[ { role:'userAdminAnyDatabase', db: 'admin'}]});

nodejs连接代码如下：

import bluebird from 'bluebird'
import mongoose from 'mongoose'
import mongoomise from 'mongoomise'class Mongo{constructor(app, config) {Object.assign(this, {app, config, })this.init()}init() {const opts = {useMongoClient: true,server: {socketOptions: { keepAlive: 1 }}}mongoose.connect('mongodb://mall:test123@127.0.0.1:27017/mall', opts).connection.on('error', err => console.log('------ Mongodb connection failed ------' + err)).on('open', () => console.log('------ Mongodb connection succeed ------'))mongoose.Promise = global.Promisemongoomise.promisifyAll(mongoose, bluebird)}
}export default Mongo

连接时报错：

D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb\lib\utils.js:98                                                         process.nextTick(function() { throw err; });                                                                                                                        ^                                                                                                                                     
Error [MongoError]: Authentication failed.                                                                                                                              at Function.MongoError.create (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\error.js:31:11)             at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:462:72                               at authenticateStragglers (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:410:16)      at Connection.messageHandler (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:444:5)    at Socket.<anonymous> (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\connection.js:306:22)    at Socket.emit (events.js:210:5)                                                                                                                                    at Socket.EventEmitter.emit (domain.js:476:20)                                                                                                                      at addChunk (_stream_readable.js:308:12)                                                                                                                            at readableAddChunk (_stream_readable.js:289:11)                                                                                                                    at Socket.Readable.push (_stream_readable.js:223:10)                                                                                                                at TCP.onStreamRead (internal/stream_base_commons.js:182:23)                                                                                                        
Emitted 'error' event on NativeConnection instance at:                                                                                                                  at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongoose\lib\connection.js:288:17                                        at NativeConnection.Connection.error (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongoose\lib\connection.js:451:12)    at open (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongoose\lib\connection.js:503:13)                                 at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongoose\lib\connection.js:524:7                                         at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb\lib\db.js:1545:20                                                at handleCallback (D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb\lib\utils.js:96:12)                              at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb\lib\db.js:1504:22                                                at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:701:7                                at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:677:20                               at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\auth\scram.js:190:18                                    at D:\SoftwareAndProgram\program\weixin\miniprogram\mini-mall\mini-mall-admin\node_modules\mongodb-core\lib\connection\pool.js:436:18                               at processTicksAndRejections (internal/process/task_queues.js:75:11) {                                                                                              name: 'MongoError',                                                                                                                                                   message: 'Authentication failed.',                                                                                                                                    ok: 0,                                                                                                                                                                errmsg: 'Authentication failed.',                                                                                                                                     code: 18,                                                                                                                                                             codeName: 'AuthenticationFailed'                                                                                                                                      
}                                                                                                                                                                       
npm ERR! code ELIFECYCLE                                                                                                                                                
npm ERR! errno 1                                                                                                                                                        
npm ERR! m-mall-admin@1.0.0 start: `babel-node ./bin/www`                                                                                                               
npm ERR! Exit status 1                                                                                                                                                  
npm ERR!                                                                                                                                                                
npm ERR! Failed at the m-mall-admin@1.0.0 start script.                                                                                                                 
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.                                                                      npm ERR! A complete log of this run can be found in:                                                                                                                    
npm ERR!     C:\Users\lenovo\AppData\Roaming\npm-cache\_logs\2019-11-29T16_19_51_799Z-debug.log                                                                         

因为用mall用户连接mall这个db，所以需要在mongoDB中执行以下命令，新建mall用户，对mall这个db有读写权限，密码为test123

use mall;
db.createUser({ user:'mall',pwd:'test123',roles:[ { role:'readWrite', db: 'mall'}]});

修改后重新启动项目，连接成功。

参考

Nodejs学习笔记（九）— 与Redis的交互（mranney/node_redis）入门目录

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作者简介

作者：小碗汤，一位热爱、认真写作的小伙，目前维护原创公众号：『我的小碗汤』，专注于写golang、docker、kubernetes等知识等提升硬实力的文章，期待你的关注。 转载说明：务必注明来源（注明：来源于公众号：我的小碗汤， 作者：小碗汤）