Reservation System - Spring Boot Backend

A secure Spring Boot backend application for reservation management with MongoDB persistence and Keycloak/ JWT authentication.

Key Features

• Secure REST API with:
  • JWT authentication (jjwt 0.11.5)
  • Keycloak integration (21.0.0)
  • OAuth2 resource server
• MongoDB data persistence
• Spring Security with OAuth2 client/resource support
• Developer Friendly:
  • Lombok for boilerplate reduction
  • Spring Boot DevTools
  • Maven wrapper included

Technology Stack

• Core: Java 11, Spring Boot 2.7+
• Database: MongoDB
• Security:
  • Spring Security 5.7.8
  • Keycloak 21.0.0
  • JJWT 0.11.5
• Tools:
  • Lombok
  • Maven 3.8.1

UML Diagram

Getting Started

Prerequisites

• Java 11 JDK
• Maven 3.8+
• MongoDB 5+
• Keycloak server (optional) delete security folder for this

Configure your MongoDB and Keycloak in application.properties:

• spring.data.mongodb.uri=mongodb://localhost:27017/reservations
• keycloak.realm=your-realm
• keycloak.auth-server-url=http://localhost:8080/auth
• keycloak.resource=your-client-id

Build and run:

• mvn clean install
• mvn spring-boot:run