连接到 MongoDB Compass 时 MongoDB ECCONREFUSED

Question

我正在尝试从头开始学习 Node.JS。当我尝试将

index.js

连接到 MongoDB 指南针时，出现错误：

MongooseServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
    at _handleConnectionErrors (/mnt/c/Users/user/Desktop/Programming/website/learningNode/mongoose/node_modules/mongoose/lib/connection.js:897:11)
    at NativeConnection.openUri (/mnt/c/Users/user/Desktop/Programming/website/learningNode/mongoose/node_modules/mongoose/lib/connection.js:848:11) {
  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,
        minRoundTripTime: 0,
        lastUpdateTime: 31356356,
        lastWriteDate: 0,
        error: MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017
            at connectionFailureError (/mnt/c/Users/user/Desktop/Programming/website/learningNode/mongoose/node_modules/mongodb/lib/cmap/connect.js:353:20)
            at Socket.<anonymous> (/mnt/c/Users/user/Desktop/Programming/website/learningNode/mongoose/node_modules/mongodb/lib/cmap/connect.js:268:44)
            at Object.onceWrapper (node:events:635:26)
            at Socket.emit (node:events:520:28)
            at emitErrorNT (node:internal/streams/destroy:170:8)
            at emitErrorCloseNT (node:internal/streams/destroy:129:3)
            at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
          [Symbol(errorLabels)]: Set(1) { 'ResetPool' },
          [cause]: Error: connect ECONNREFUSED 127.0.0.1:27017
              at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1607:16) {
            errno: -111,
            code: 'ECONNREFUSED',
            syscall: 'connect',
            address: '127.0.0.1',
            port: 27017
          }
        },
        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
}

我已经使用 mongosh 来确保连接字符串正确并且工作正常。 MongoDB 服务已启动并运行。

import express from "express";
import mongoose from "mongoose";
import dotenv from "dotenv";

// Create an Express app
const app = express();

// Load environment variables from .env file
dotenv.config();

// Set the port from environment variables or default to 7000
const PORT = process.env.PORT || 7000;

// Get the MongoDB connection URL from environment variables
const MONGOURL = process.env.MONGO_URL;

// Connect to MongoDB and start the server
mongoose.connect(MONGOURL).then(() => {
  console.log("Database connected successfully.");
  app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
  });

});

PORT = 8000
MONGO_URL = "mongodb://localhost:27017/dbconnect"

设置非常基本，我不知道如何解决它。

我尝试过使用 localhost、127.0.0.1 或 0.0.0.0 来使用各种连接字符串。

Answer 1

你的

MONGO_URL

可能是错的。

dbconnect

应该是您的默认数据库名称。 您可以在此处找到参考。