[SequelizeConnectionRefusedError]：连接ECONNREFUSED 127.0.0.1:3306

问题描述

嗨，我是Sequelize ORM的新手。我正在学习一些教程，并且在动手操作时，我面临着将MySQL数据库与服务器连接的问题。

ConnectionRefusedError [SequelizeConnectionRefusedError]: connect ECONNREFUSED 127.0.0.1:3306
    at ConnectionManager.connect (G:\projects\chatApp\node_modules\sequelize\lib\dialects\mysql\connection-manager.js:116:17)
    at processTicksAndRejections (internal/process/task_queues.js:97:5) {
  parent: Error: connect ECONNREFUSED 127.0.0.1:3306
      at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
    errno: 'ECONNREFUSED',code: 'ECONNREFUSED',syscall: 'connect',address: '127.0.0.1',port: 3306,fatal: true
  },original: Error: connect ECONNREFUSED 127.0.0.1:3306
      at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {
    errno: 'ECONNREFUSED',fatal: true
  }
}

Serve.js

const { ApolloServer } = require('apollo-server')

const { sequelize } = require('./models')

const resolvers = require('./graphql/resolvers')
const typeDefs = require('./graphql/typeDefs')

const server = new ApolloServer({
    typeDefs,resolvers,})

server.listen().then(({ url }) => {
    console.log(`? Server ready at ${url}`)

    sequelize
        .authenticate()
        .then(() => console.log('Database connected!!'))
        .catch((err) => console.log(err))
})

config.json

{
  "development": {
    "username": "root","password": "root","database": "database_dev","host": "127.0.0.1","dialect": "mysql"
  }
}

谁能告诉我为什么我无法连接到数据库？

解决方法

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