SimplePOS24 Backend

A Spring Boot backend application for a simple Point of Sale (POS) system.

Prerequisites

• Java 11 or higher
• Maven 3.6 or higher
• MongoDB database (local installation or cloud service like MongoDB Atlas)

Setup

1. Database Configuration

This application requires a MongoDB database. You can either:

• Install MongoDB locally
• Use a cloud service like MongoDB Atlas

2. Environment Variables

Create the following environment variables for database configuration:

export MONGODB_URI="your-mongodb-connection-string"
export MONGODB_DATABASE="kassensystem"

3. Running the Application

# Install dependencies
mvn clean install

# Run the application
mvn spring-boot:run

The application will start on port 8081 by default.

API Documentation

The application provides REST endpoints for:

• Product management
• Transaction processing
• Receipt printing

Testing

Run the test suite:

mvn test

Project Structure

• src/main/java/simplepos24/ - Main application code
  • config/ - Configuration classes
  • controller/ - REST controllers
  • entity/ - Data models
  • services/ - Business logic
  • dto/ - Data transfer objects
  • factory/ - Factory classes
  • printer/ - Receipt printing functionality
• src/test/java/ - Test classes