貓鼬未連接到mongodb服務器

Question

Mongoose未連接到MongoDB服務器

確保密碼和用戶名正確

const mongoose = require('mongoose')
mongoose.Promise = global.Promise

const uri ="mongodb+srv://halbr:password@cluster0-t2noa.mongodb.net/test?retryWrites=true&w=majority"

mongoose.connect(uri).then(
    () => {
        console.log('Connect to Mongo');
    },
    err => {
        console.log("Error connecting to Mongo:")
        console.log(err);
    }

);

module.exports = mongoose.connection

Answer 1

您可以嘗試以下示例：

const mongoose = require('mongoose')
mongoose.Promise = global.Promise

async function myDbConnection() {

    const url = 'mongodb+srv://halbr:password@cluster0-t2noa.mongodb.net/test?retryWrites=true&w=majority';

    try {
        let connectionPromise = await mongoose.connect(url, { useNewUrlParser: true });
        if (mongoose.connection) {
            console.log('Connected Successfully')
            global.connectionPromise = connectionPromise;
        } else { global.connectionPromise = null; 
                 console.log('not connected to DB') }
        return connectionPromise;
    } catch (error) {
        console.log('Error connecting to DB ::', error);
    }
}

module.exports = myDbConnection();

Answer 2

請確認您在IP白名單中添加了公共IP，為了進行測試，您可以添加通配符。 0.0.0.0/0 ，如果可以，您可以嘗試通過命令行連接到db，但它不起作用。我建議添加具有root角色的新用戶，然后再次檢查連接。

use admin
 db.createUser(
 {
   user: "admin",
   pwd: "password",
   roles: [ { role: "root", db: "admin" } ]
 }
);
exit;