Hotel Booking System - Spring Boot Application

This project is a Hotel Booking System built using Spring Boot, Spring Security, and JWT for secure user authentication. It allows users to manage hotel room bookings, user roles (ADMIN and USER), and perform CRUD operations on bookings and users. The system supports JWT-based stateless authentication and authorization, ensuring that only authorized users can perform specific actions.

Project Structure

Features

• User Authentication & Authorization: Users can register and authenticate using JWT. Roles (Admin, User) are assigned, and role-based access is implemented.
• Booking Management: Users can book rooms, view bookings, and manage their booking details.
• Room Management: Admin users can manage rooms and view the list of all bookings.
• JWT Authentication: Secure login with JWT-based stateless authentication.
• Role-Based Access Control: Admin and user roles with permissions to perform actions based on their roles.

Requirements

• Java 17 or later
• Spring Boot 3.x
• MySQL Database (or any relational database)
• Maven for dependency management

Setup and Installation

1. Clone the repository

git clone https://github.com/yourusername/hotel-booking-system.git
cd hotel-booking-system

2. Setup MySQL Database

Create a MySQL database named hotel_db and configure the database connection in src/main/resources/application.properties

spring.datasource.url=jdbc:mysql://localhost:3306/hotel_db
spring.datasource.username=fetu
spring.datasource.password={put your root password for for sql database configuration here}
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL8Dialect

3. Install Dependencies

Use Maven to install the necessary dependencies.

4. Run the Application

You can run the application using Maven:

API Endpoints

Here’s a quick overview of some of the key API endpoints.

Public Endpoints

• POST /auth/login: User login, returns a JWT token.

Secured Endpoints

• GET /users/all: Get all users (Admin only).
• GET /users/{email}: Get user details by email (Admin or User).
• DELETE /users/delete/{email}: Delete a user by email (Admin or the user themselves).
• POST /rooms: Admin adds a new room.
• GET /rooms: Get all rooms (Admin).
• POST /bookings: Create a new booking.
• GET /bookings: Get all bookings (Admin).
• GET /bookings/{email}: Get bookings by user email (Admin or the user themselves).

Authorization

• Admin Role (ROLE_ADMIN) has access to all endpoints except those related to user login.
• User Role (ROLE_USER) has access to their own bookings and can delete their own account.

Security

This application uses Spring Security to secure the endpoints with JWT authentication. The JWT token is passed in the Authorization header as Bearer <token>. The token is valid for 15 minutes and should be refreshed for continued access.

Database Structure

The project uses the following entities:

• User: Represents a user in the system, associated with roles (Admin, User).
• Role: Represents user roles that grant specific permissions.
• Room: Represents hotel rooms, which can be booked by users.
• BookedRoom: Represents a booking, including check-in, check-out dates, and guest details.

Technologies Used

• Spring Boot: For backend development.
• Spring Security: For handling authentication and authorization.
• JWT: For secure token-based authentication.
• MySQL: For data storage.
• BCryptPasswordEncoder: For password encryption.
• Lombok: For boilerplate code reduction (Getters, Setters, Constructors).