Add a Dependency and It Just Works: One‑Line Spring Boot Starter Auto‑Configuration
This article explains why adding a Spring Boot starter dependency instantly creates the required beans without XML or manual configuration, walks through the auto‑configuration mechanism—including @EnableAutoConfiguration, AutoConfigurationImportSelector, and conditional annotations—and shows step‑by‑step how to build a custom starter from scratch with Maven, configuration properties, an aspect, and registration files.
