Overview:

The Next.js and Express JWT authentication project is a comprehensive example featuring both server and client applications for JWT authentication. The server side is built with Express and MongoDB, while the client side is developed with Next.js. This project showcases user registration, data storage, authentication handling, and data validation processes.

Features:

• Full Stack Example: Includes server and client apps to demonstrate end-to-end functionality.
• Express Server: Utilizes Express for handling server-side logics and API endpoints.
• MongoDB Integration: Allows connection to MongoDB for data storage, with flexibility for custom data storage integration.
• Next.js Client: Implements the client side using Next.js framework for efficient front-end development.
• User Registration: Provides a guide for registering users within the backend directory.
• Authentication Handling: Demonstrates user authentication with token generation and validation.
• Error Handling: Differentiates responses for successful authentication and unauthenticated scenarios.

Installation:

To install and run the Next.js and Express JWT authentication project, follow these steps:

1. Clone the repository:

   git clone <repository_url>
   cd <repository_folder>
   

2. Start MongoDB, server, and client:

   • For MongoDB: Ensure it is running locally or update connection settings.
   • For Server: Navigate to the server directory and run:

     cd server
     npm install
     npm start
     

   • For Client: Navigate to the client directory and run:

     cd client
     npm install
     npm run dev
     

3. Register a user by following the instructions in the backend directory.

4. In the client app, enter the email and password then submit the form for user authentication.

5. Based on the server response, handle success by storing the token in a cookie or handle failure by checking the response HTTP code.

6. Navigate between pages in the client app to send requests to the server for token validation.

Summary:

The Next.js and Express JWT authentication project provides a valuable example of implementing JWT authentication with Express and MongoDB on the server side, coupled with the Next.js framework on the client side. The project covers user registration, authentication handling, and token validation, making it a useful resource for understanding a full authentication workflow in a web application.