Node JS POST REST API | Flutter Node JS Backend | Node JS Tutorial | Flutter Tutorial
Node JS is a powerful backend language that is often used to create REST APIs for mobile and web applications. In this tutorial, we will learn how to create a POST REST API using Node JS and use it as a backend for a Flutter application.
Creating a Node JS Backend
To create a Node JS backend for our Flutter application, we will need to set up a new project and install the necessary dependencies. We can use npm to initialize a new Node JS project and then install the required packages using the following commands:
npm init -y
npm install express body-parser
Once the project is set up, we can create a new file, for example, ‘server.js’, and start writing our backend code. We will need to use the ‘express’ package to create a new Express.js app and handle HTTP requests. We will also use the ‘body-parser’ package to parse incoming request bodies.
Creating a POST REST API
Now that we have set up our Node JS backend, we can define a new route that handles POST requests and creates a REST API endpoint. We can use the following code as an example:
const express = require('express');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.json());
app.post('/api/post', (req, res) => {
const data = req.body;
// process the incoming data and send a response
res.status(200).json({ message: 'Data received successfully' });
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
With this code, we have created a new route ‘/api/post’ that handles POST requests and sends a response back to the client. We can now use this endpoint as the backend for our Flutter application to send data to the server.
Integrating with Flutter
In our Flutter application, we can use the ‘http’ package to send POST requests to our Node JS backend. We can create a simple function that sends the data to the server using the following code:
import 'package:http/http.dart' as http;
Future postData() async {
final response = await http.post(
'http://localhost:3000/api/post',
body: {'name': 'John', 'email': 'john@example.com'},
);
// handle the response from the server
}
By integrating our Flutter application with the Node JS backend, we have created a complete system that allows data to be sent from the client to the server and processed as needed.
Conclusion
In this tutorial, we have learned how to create a Node JS POST REST API and use it as a backend for a Flutter application. By following the steps outlined in this article, you can create your own backend using Node JS and integrate it with your mobile or web application.
What extension are you using to make the code look so clear? Can you tell me? tkx u
sir maintain connectivity sir no connection with previous videos
another thing I couldn't see how it was done was to make the create button send you to the create screen, I made a material route to do that: ElevatedButton(
onPressed: () {
Navigator.push(context,
MaterialPageRoute(builder: (context) => CreateData()));
},
child: Text("CREATE")),
also import the dart file too:
import 'package:node_tutorials/create.dart';
flutter cannot connect to nodejs
I/flutter (29381): failed to get response
sir im using physical device for development so how can i add or put ipv4 address on my physical device or where here is no any proxy option on my android phone(physically) can u please recommend any settings or steps to presue them?
I am not able to set the proxy to my IP
kindly request a e-pay/wallet finance app from where we can learn about all things like how amount from one account deducted and added to another account. How we can print statement and how we can make secure e-wallet and how to make login with email password
Is this will be a full fluttter and backend course?