Spring Boot 3 REST API — Barcode and QR Code Generation

In this story, we’ll learn how to generate barcodes and QR codes and expose them as an endpoint in the Spring Boot API.

· Prerequisites
· Overview
∘ Barcodes
∘ QR Codes
· Getting Started
∘ Add Dependencies
∘ Create a Service for Barcode and QR Code Generation
∘ Create a REST Controller
· Test the REST APIs
∘ Generate a QR Code
∘ Generate a Barcode
· Conclusion
· References

Prerequisites

This is the list of all the prerequisites:

• Spring Boot 3+
• Maven 3.6.3
• Java 21
• Postman / insomnia or any other API testing tool.

Overview

Barcodes

A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings, and sizes of parallel lines.

https://en.wikipedia.org/wiki/Barcode