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feat(spring): Spring Boot 4 / Spring Framework 7 support — tracking

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
25/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Quiet
Tech stack
java, spring, spring-boot
Domain
backend

Research direction

This is a broad Spring Boot 4 tracking issue covering completed work, in-progress work, and backlog modules rather than one defined change. Start by selecting a backlog module such as spring-jms-6.0 or the webmvc smoke test, then read CLAUDE.md and the relevant module status; done means the scoped work is implemented, its tests pass, and a PR is ready.

Written by the indexing model from the issue text.

Description

Spring Boot 4 Support — Status Tracker

Spring Boot 4 = Spring Framework 7 + Jakarta EE 11. This issue tracks all work units.

Completed ✅

Module Branch Status
spring-webmvc-6.0 boot4/spring-webmvc-6.0 ✅ Implemented — Groovy migration pending before PR
spring-webflux-6.0 boot4/spring-webflux-6.0 ✅ Implemented — Groovy migration pending before PR
spring-scheduling-3.1 boot4/spring-scheduling-3.1 ✅ Implemented — test running, PR pending
spring-boot-1.3 boot4/spring-boot-1.3 ✅ Implemented — PR pending
spring-messaging-4.0 boot4/spring-messaging-4.0 ✅ Implemented — PR pending
spring-security-6.0 boot4/spring-security-6.0 ✅ Implemented — Groovy migration pending before PR
spring-rabbit-1.5 boot4/spring-rabbit-1.5 ✅ Implemented — PR pending
spring-data-3.0 new module ✅ Implemented — PR pending
ByteBuddy trie included in webmvc PR ✅ Boot 4 class allow-transform entries

In Progress 🔄

Module Status
jakarta-servlet-6.1 🔄 Scoping — 3-arg sendRedirect hook for Servlet 6.1
spring-scheduling-3.1 PR 🔄 Running latestDepTest (Boot 4.0.0-RC2)

Backlog 📋

Module Notes
spring-jms-6.0 jakarta.jms namespace for Spring JMS 6+
dd-smoke-tests/spring-boot-4.0-webmvc E2E smoke test module
spring-ws-3.0 Lower priority

Key Technical Notes

  • Jackson 3: Spring 7 defaults to JacksonJsonHttpMessageConverter (Jackson 3); hook added to HttpMessageConverterInstrumentation
  • javax → jakarta: Already handled by existing [6,) modules — no migration needed
  • Muzzle ranges: All existing [6,) modules cover Spring Framework 7 without new sibling modules
  • Groovy migration: CLAUDE.md requires any edited Groovy test → full JUnit5 Java migration; webmvc/security/webflux fixtures need migration before PRs
  • Sample app: 39 spans verified on Boot 4.0.0-RC2 end-to-end

Oracle / Toolkit Notes

  • Oracle assessor fixes applied: timeout 1→5min, max_turns 40→60, "read latest plan only" prompt
  • version_bump lane added to oracle to skip behavior_verified gate for dep-bump tasks
  • Stale .pyc with merge conflict markers cleared (was blocking oracle)

🤖 Generated with Claude Code

Dominant language
Java
Stars
737
Forks
361
Avg merge
3d 20h
Merged PRs (30d)
173

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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