无法将 nodejs 连接到 mongodb？

Question

我想将我的节点 js 连接到 mongodb。 --> 我正在使用 mongodb 版本 6.5.0（将其作为服务安装 [完整安装]） --> 我还安装了 mongosh（mongodb 终端） --> 我可以使用 mongosh 终端访问和修改我的数据库（所有命令都在终端中运行） --> 在我的项目文件夹中，我首先执行了“npm init”，然后是“npm install node”，然后是“npm install mongodb”（驱动程序），我使用的是 nodeJS 版本 18.15.0 我在“connect.js”文件中的代码如下：

const {MongoClient} = require('mongodb');

const MONGO_URL = 'mongodb://localhost:27017';
const DB_NAME = 'tododb';

// ASYNC IIFE

(async () =>{

   const client = await MongoClient.connect(MONGO_URL)

   const tododb = client.db(DB_NAME)
   console.log(tododb)
   
})()

当我在 vs 代码终端中执行“node connect.js”时出现此错误

C:\Users\Gaurav\Desktop\Gagan\DEV\mongoBasics\node_modules\mongodb\lib\sdam\topology.js:277
                const timeoutError = new error_1.MongoServerSelectionError(`Server selection timed out after ${serverSelectionTimeoutMS} ms`, this.description);
                                     ^

MongoServerSelectionError: connect ECONNREFUSED ::1:27017
    at Timeout._onTimeout (C:\Users\Gaurav\Desktop\Gagan\DEV\mongoBasics\node_modules\mongodb\lib\sdam\topology.js:277:38)
    at listOnTimeout (node:internal/timers:569:17)
    at process.processTimers (node:internal/timers:512:7) {
  reason: TopologyDescription {
    type: 'Unknown',
    servers: Map(1) {
      'localhost:27017' => ServerDescription {
        address: 'localhost:27017',
        type: 'Unknown',
        hosts: [],
        passives: [],
        arbiters: [],
        tags: {},
        minWireVersion: 0,
        maxWireVersion: 0,
        roundTripTime: -1,
        lastUpdateTime: 1431144101,
        lastWriteDate: 0,
        error: MongoNetworkError: connect ECONNREFUSED ::1:27017
            at connectionFailureError (C:\Users\Gaurav\Desktop\Gagan\DEV\mongoBasics\node_modules\mongodb\lib\cmap\connect.js:383:20)
            at Socket.<anonymous> (C:\Users\Gaurav\Desktop\Gagan\DEV\mongoBasics\node_modules\mongodb\lib\cmap\connect.js:307:22)
            at Object.onceWrapper (node:events:628:26)
            at Socket.emit (node:events:513:28)
            at emitErrorNT (node:internal/streams/destroy:151:8)
            at emitErrorCloseNT (node:internal/streams/destroy:116:3)
            at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
          cause: Error: connect ECONNREFUSED ::1:27017
              at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1494:16) {
            errno: -4078,
            code: 'ECONNREFUSED',
            syscall: 'connect',
            address: '::1',
            port: 27017
          },
          [Symbol(errorLabels)]: Set(1) { 'ResetPool' }
        },
        topologyVersion: null,
        setName: null,
        setVersion: null,
        electionId: null,
        logicalSessionTimeoutMinutes: null,
        primary: null,
        me: null,
        '$clusterTime': null
      }
    },
    stale: false,
    compatible: true,
    heartbeatFrequencyMS: 10000,
    localThresholdMS: 15,
    setName: null,
    maxElectionId: null,
    maxSetVersion: null,
    commonWireVersion: 0,
    logicalSessionTimeoutMinutes: null
  },
  code: undefined,
  [Symbol(errorLabels)]: Set(0) {}
}

Node.js v18.15.0

我想将我的 nodeJS 与 mongoDB 一起使用

Answer 1

您正在尝试通过 ipV6 连接，

error: MongoNetworkError: connect ECONNREFUSED ::1:27017

行表明；按照@Muhammad Fazeel 的建议，将

MONGO_URL

更改为

mongodb://127.0.0.1:27017

这明确地通过 ipV4

开始连接