Jul 8, 2026 · Backend Development

Step‑by‑Step Walkthrough of Spring Boot’s Main‑Method to Container‑Ready Startup Chain

This article provides a line‑by‑line walkthrough of Spring Boot’s startup sequence, from the main method through SpringApplication.run, environment preparation, context creation, bean factory refresh, to the final ApplicationReadyEvent, highlighting key code snippets and common failure points.

ApplicationContextBeanLifecycleDependencyInjection

0 likes · 13 min read

Step‑by‑Step Walkthrough of Spring Boot’s Main‑Method to Container‑Ready Startup Chain

Architecture Digest

Nov 6, 2019 · Backend Development

Spring Boot Startup Process Overview and Source Code Analysis

This article walks through the Spring Boot startup sequence, detailing the roles of spring.factories, SpringApplication initialization, environment setup, ApplicationContext creation, and context refresh, while providing key code excerpts to illustrate each step.

JavaSpringBootSpringFramework

0 likes · 14 min read

Spring Boot Startup Process Overview and Source Code Analysis