Question

我正在用node和sequelize开发一个后端应用程序。我的数据库来自postgresql。

启动应用程序时，数据库连接工作正常，但是当它尝试与数据库进行通信以读取或更新时，它会失败并显示连接错误：用户“ wushin”的密码身份验证失败。

我似乎真的很奇怪，因为数据库连接已经完成，并且密码已经过验证。你们知道发生了什么吗？ pg模块也许有问题，但是我尝试了不同的版本。

版本节点：10.17.0 续集：5.21.3 邮编：10.11 pg模块：7.17.1

->此代码可以正常工作：

const sequelize = new Sequelize(process.env.DATABASE_DEV_URL)

sequelize
  .authenticate()
  .then(() => {
    console.log('Connection has been established successfully.\n')
  })
  .catch(err => {
    console.error('Unable to connect to the database:', err)
  })

->但是此承诺因SequelizeConnectionError而失败：

models.Question.findAll()
    .then(data => {
      console.log('-> Succeeded data fetching\n')
      console.log(data)
    })
    .catch(err => {
      console.log('-> Failed data fetching\n')
      console.log('Error', err)
    })

日志：

yarn run v1.19.2
$ node index.js
Example app listening on port 4000 or something!
Executing (default): SELECT 1+1 AS result
Connection has been established successfully.

- Trying to fetch data:
-> Failed data fetching
Error:
 { SequelizeConnectionError: password authentication failed for user "wushin"
    at connection.connect.err (/home/wushin/Projects/GuessGame/theguessgame-api/node_modules/sequelize/lib/dialects/postgres/connection-manager.js:182:24)
    at Connection.connectingErrorHandler (/home/wushin/Projects/GuessGame/theguessgame-api/node_modules/pg/lib/client.js:194:14)
    at Connection.emit (events.js:198:13)
    at Socket.<anonymous> (/home/wushin/Projects/GuessGame/theguessgame-api/node_modules/pg/lib/connection.js:128:12)
    at Socket.emit (events.js:198:13)
    at addChunk (_stream_readable.js:287:12)
    at readableAddChunk (_stream_readable.js:268:11)
    at Socket.Readable.push (_stream_readable.js:223:10)
    at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)
  name: 'SequelizeConnectionError'

Answer 1

似乎您没有向主机传递任何配置给Sequelize。最低配置为主机，端口，数据库名称，方言用户名和密码。

从文档中

 const Sequelize = require('sequelize');

 // Option 1: Passing parameters separately const sequelize = new
 Sequelize('database', 'username', 'password', {   
   host: 'localhost',  
   dialect: /* one of 'mysql' | 'mariadb' | 'postgres' | 'mssql' */ 
 });

// Option 2: Passing a connection URI const sequelize = new
 Sequelize('postgres://user:pass@example.com:5432/dbname');

Answer 2

我终于解决了这个问题。问题在于使用sequelize，要求模型使用sequelize创建的配置存储库，调用应该为您进行sequelize连接的index.js。

我与sequelize的连接运行良好，但是由于需要模型而启动的连接在我的数据库中有一些不良信息。

因此，我无法使用导入的模型来获取数据库上的数据。

我插入了很好的配置信息：

require('dotenv').config()

module.exports = {
  development: {
    url: process.env.DATABASE_URL,
    dialect: 'postgres',
  },
  test: {
    url: process.env.DATABASE_TEST_URL,
    dialect: 'postgres',
  },
  production: {
    url: process.env.DATABASE_PROD_URL,
    dialect: 'postgres',
  },
}

并完全删除了我自己写的那一行：

const sequelize = new Sequelize(process.env.DATABASE_DEV_URL)

现在是models / index.js通过以下方式连接到数据库：

const sequelize = new Sequelize(process.env.DATABASE_URL)

sequelize
  .authenticate()
  .then(() => {
    console.log('Connection has been established successfully.\n')
  })
  .catch(err => {
    console.error('Unable to connect to the database:', err)
  })

Node-Postgres SequelizeConnectionError：用户的密码身份验证失败

2 个答案: