spring-boot-migration

Spring Boot migration from v2 to v4 requires addressing javax to jakarta namespace changes, Spring Security 5 to 7 updates, and RestTemplate to RestClient API shifts. Structured guidance and OpenRewrite recipes automate code changes to reduce manual rewrite effort across major versions.

The best way to handle javax to jakarta namespace migration is using OpenRewrite recipes that automatically update package imports across your codebase. This approach ensures consistent namespace changes while reducing manual rewrite effort during major version upgrades.

OpenRewrite recipes support Spring Security 5 to 7 migration by applying automated code transformations for security configuration updates. The recipes provide concrete examples of required code changes and property renames during the upgrade process.

Yes, Spring Boot 4 migration covers virtual threads and structured concurrency as part of the major version upgrade. The migration guidance includes concrete examples of code changes needed to adopt these new concurrency features.

Replace RestTemplate with RestClient using OpenRewrite recipes that automate the API transition during Spring Boot upgrades. The migration guidance includes concrete examples of code changes and testing considerations for RestClient adoption.

Testing considerations for Spring Boot upgrades across major versions include validating namespace changes, security configuration updates, and API transitions like RestTemplate to RestClient. The migration workflow provides remediation guidance and testing strategies for each phase.