Connecting to MongoDB Using Node.js
Step 1: Set Up Your Node.js Project
- Create a new directory for your project and navigate into it:
mkdir mongo-auth-example
cd mongo-auth-example
- Initialize a new Node.js project:
npm init -y
- Install the mongodb package:
npm install mongodb
Project Structure
The Update dependencies in your package.json file will look like:
"dependency":{
"mongodb": "4.1.1"
}
Step 2: Write the Connection Code
Create a new file named index.js and open it in your text editor. Add the following code to connect to MongoDB with authentication:
const { MongoClient } = require('mongodb');
// Connection URL
const url = 'mongodb://myUserAdmin:abc123@localhost:27017/admin';
const client = new MongoClient(url, { useNewUrlParser: true, useUnifiedTopology: true });
// Database Name
const dbName = 'myDatabase';
async function main() {
// Use connect method to connect to the server
await client.connect();
console.log('Connected successfully to server');
const db = client.db(dbName);
// The following code can be used to perform database operations
// Close the connection
await client.close();
}
main().catch(console.error);
Step 3: Handling Connection Errors
To handle potential errors, you can wrap the connection logic in a try-catch block. Update your main function as follows:
async function main() {
try {
// Use connect method to connect to the server
await client.connect();
console.log('Connected successfully to server');
const db = client.db(dbName);
// Perform database operations here
} catch (err) {
console.error('Failed to connect to MongoDB', err);
} finally {
// Ensure that the client will close when you finish/error
await client.close();
}
}
main().catch(console.error);
Step 4: Run Your Node.js Application
Save the index.js file and run your Node.js application:
node index.js
If everything is set up correctly, you should see the message Connected successfully to server in your terminal.
How to Connect Mongodb Authentication by Node.js?
MongoDB is a popular NoSQL database that provides high performance, high availability, and easy scalability. In many applications, you need to connect to a MongoDB database with authentication to ensure data security. This article will guide you through the process of connecting to a MongoDB database with authentication using Node.js.
These are the following steps to connect Mongodb Authentication by Node.js:
Table of Content
- Setting Up MongoDB with Authentication
- Connecting to MongoDB Using Node.js
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