🔸 TL;DR

▪️ I migrated a Spring Boot 3 app to Spring Boot 4 using OpenRewrite.

▪️ Add the Rewrite Maven plugin + the right recipe pack, run rewrite:discover / rewrite:run, review the diff, rebuild, retest ✅

🔸 WHAT’S IN THE VIDEO

▪️ Run the app first (baseline ✅)

▪️ Add rewrite-maven-plugin to the pom.xml

▪️ Make sure the Boot 4 recipe is actually available (recipe pack on plugin classpath)

▪️ Execute the migration recipe

▪️ Review the generated changes (pom + code + config)

▪️ Re-run tests + endpoint validation

🔸 WHY OPENREWRITE IS A GAME CHANGER

▪️ Automates mechanical refactors (less human error) 🤖

▪️ Produces reviewable diffs (Git-friendly) 🧾

▪️ Repeatable across projects and teams 🔁

▪️ Great for “upgrade waves” (Boot, Spring, Java baselines) 🌊

🔸 TAKEAWAYS

▪️ If you see: “Could not find recipe … among available recipes” → your recipe jar isn’t loaded (use plugin or -Drewrite.recipeArtifactCoordinates=...)

▪️ Run rewrite:discover before rewrite:run to confirm the recipe is visible

▪️ Always validate with ./mvnw test + a quick runtime smoke test

🎥 Video: https://youtu.be/Q6Zf_Eg_zxg

📦 Repo: https://github.com/vinny59200/vv-spring-h2-custom-finder-relationship.git

#SpringBoot #OpenRewrite #Java #Spring #Maven #Refactoring #DeveloperTools #Backend #SoftwareEngineering

🍃📗 Grab your Spring cert Book: https://bit.ly/springtify

📺 https://youtu.be/Q6Zf_Eg_zxg