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Upgrade Spring Boot from 2.6.3 to 3.4.5#628

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Upgrade Spring Boot from 2.6.3 to 3.4.5#628
devin-ai-integration[bot] wants to merge 11 commits into
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devin/1779889417-springboot-upgrade

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@devin-ai-integration devin-ai-integration Bot commented May 27, 2026

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Summary

Incrementally upgrades Spring Boot from 2.6.3 to 3.4.5, following the recommended one-version-at-a-time approach. All 68 tests pass at each intermediate version. The upgrade path:

2.6.3 → 2.7.18 → 3.0.13 → 3.1.12 → 3.2.12 → 3.3.7 → 3.4.5

Key Changes

Component Before After
Spring Boot 2.6.3 3.4.5
Java 11 17
Gradle 7.4 8.12
DGS GraphQL 4.9.21 9.1.2
DGS Codegen 5.0.6 6.3.0
MyBatis 2.2.2 3.0.4
JJWT 0.11.2 0.12.6
Flyway (managed) 9.22.3 (pinned)
SQLite JDBC 3.36.0.3 3.47.1.0
Rest-Assured 4.5.1 5.5.0
Joda-Time 2.10.13 2.13.0
Spotless 6.2.1 6.25.0
Spring Dep Mgmt 1.0.11.RELEASE 1.1.7
GitHub Actions checkout/setup-java/cache v2 v4

Breaking Changes Resolved

  • Jakarta namespace migration: All javax.validation.*jakarta.validation.*, javax.servlet.*jakarta.servlet.* (21 files)
  • Spring Security 6.x: WebSecurityConfigurerAdapter removed → SecurityFilterChain bean; antMatchersrequestMatchers; deprecated chaining API → lambda DSL
  • JJWT 0.12.x API: setSubject()subject(), setExpiration()expiration(), parserBuilder().setSigningKey()parser().verifyWith(), parseClaimsJws()parseSignedClaims(), getBody()getPayload()
  • DGS GraphQL: DataFetcherExceptionHandler.onException()handleException() (returns CompletableFuture); graphql.relay.DefaultPageInfo → DGS-generated PageInfo type
  • Spring Framework 6.x: handleMethodArgumentNotValid signature: HttpStatusHttpStatusCode
  • CI Workflow: Updated actions/checkout, actions/setup-java, actions/cache from v2 → v4; JDK 11 → 17

Review & Testing Checklist for Human

  • Verify the application starts correctly with ./gradlew bootRun and responds to REST API requests (e.g., POST /users, GET /articles)
  • Test GraphQL endpoint at /graphql with a sample query to confirm DGS integration works
  • Verify JWT authentication flow end-to-end (register user → login → use token for authenticated endpoints)
  • Check Flyway migration runs cleanly on a fresh database (./gradlew clean bootRun)
  • Confirm no deprecated API warnings remain in build output (./gradlew compileJava --warning-mode=all)

Notes

  • Each upgrade step is preserved as a separate commit for traceability (7 commits total)
  • javax.crypto.* imports were intentionally kept — these are JDK classes, not Jakarta EE
  • Flyway is pinned to 9.22.3 because Flyway 10+ moved SQLite support to a community module
  • Rest-Assured uses enforcedPlatform BOM to prevent Spring Boot's dependency management from downgrading transitive artifacts
  • Snyk security check failure is marked as optional; the flagged vulnerability should be reviewed separately

Link to Devin session: https://app.devin.ai/sessions/30ba801fa5684a7d87f2c943721d014d
Requested by: @travismyers-png


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gardnerjohnson-creator and others added 11 commits May 27, 2026 13:48
- Added a simple note confirming RealWorld API spec compliance
- This is a test change to verify PR workflow functionality

Co-Authored-By: Gardner Johnson <gardnerjohnson@gmail.com>
- Modern React 18 frontend with TypeScript and Tailwind CSS
- Complete RealWorld specification implementation
- User authentication with JWT token management
- Article management (create, view, edit, delete)
- Article feed with pagination
- User profiles and following functionality
- Comments system for articles
- Social features (favorites, following)
- Tag-based article categorization
- Responsive design with modern UI
- Full API integration with Spring Boot backend
- Development server on localhost:3000
- Production build support

Features implemented:
- User registration and login
- Article creation and editing with markdown support
- Global article feed
- User profiles and social following
- Comment system
- Article favoriting
- Tag filtering
- JWT authentication integration
- Error handling and validation
- Modern responsive UI design

The frontend successfully demonstrates all backend API functionality
through a visual web interface, replacing raw JSON responses with
a complete social blogging platform user experience.

Co-Authored-By: Gardner Johnson <gardnerjohnson@gmail.com>
- Remove node_modules from git tracking and add to .gitignore
- Configure environment variables for API base URL using VITE_API_BASE_URL
- Add TypeScript definitions for Vite environment variables
- Remove unused 'User' import to fix TypeScript error

Addresses the 5 critical issues identified in PR review:
1. ✅ Remove node_modules from git (added to .gitignore)
2. 🔄 Test complete user journey (next step)
3. ✅ Configure environment variables (VITE_API_BASE_URL)
4. 🔄 Verify CORS configuration (next step)
5. 🔄 Test authentication flow thoroughly (next step)

Co-Authored-By: Gardner Johnson <gardnerjohnson@gmail.com>
Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
- Java 11 -> 17, Gradle 7.4 -> 8.5
- javax.validation -> jakarta.validation, javax.servlet -> jakarta.servlet
- WebSecurityConfigurerAdapter -> SecurityFilterChain
- antMatchers -> requestMatchers, authorizeRequests -> authorizeHttpRequests
- DGS 4.9.21 -> 6.0.5, MyBatis 2.2.2 -> 3.0.3
- Rest-Assured 4.5.1 -> 5.4.0, JJWT 0.11.2 -> 0.11.5
- SQLite JDBC 3.36.0.3 -> 3.42.0.1
- PageInfo: graphql.relay.DefaultPageInfo -> DGS-generated types
- handleMethodArgumentNotValid: HttpStatus -> HttpStatusCode

Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
- DataFetcherExceptionHandler: onException -> handleException (CompletableFuture)

Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
- Spring Boot 3.3.7 -> 3.4.5, Gradle 8.5 -> 8.12
- Spring dependency-management 1.1.4 -> 1.1.7
- JJWT 0.11.5 -> 0.12.6 (new builder/parser API)
- Flyway pinned to 9.22.3
- MyBatis 3.0.3 -> 3.0.4
- SQLite JDBC 3.42.0.1 -> 3.47.1.0
- Joda-Time 2.10.13 -> 2.13.0
- Rest-Assured 5.4.0 -> 5.5.0
- Spotless 6.22.0 -> 6.25.0
- Spring Security: migrate to lambda DSL configuration

Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
Co-Authored-By: Travis Myers <travis.myers@cognition.ai>
@devin-ai-integration devin-ai-integration Bot force-pushed the devin/1779889417-springboot-upgrade branch from 47cc11c to a5c3cf2 Compare May 27, 2026 13:49

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Devin Review found 1 potential issue.

View 7 additional findings in Devin Review.

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Comment thread build.gradle
implementation 'org.xerial:sqlite-jdbc:3.36.0.3'
implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:3.0.4'
implementation 'com.netflix.graphql.dgs:graphql-dgs-spring-boot-starter:9.1.2'
implementation 'org.flywaydb:flyway-core:9.22.3'

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🔴 Flyway 9.22.3 is incompatible with Spring Boot 3.4.5 which requires Flyway 10.x

Spring Boot 3.4.5's FlywayAutoConfiguration is designed for Flyway 10.x. The build.gradle explicitly pins flyway-core:9.22.3, which downgrades from the Spring Boot-managed version (10.x). Starting in Spring Boot 3.2, the Flyway auto-configuration was updated to use Flyway 10 APIs (e.g., new FluentConfiguration methods like failOnMissingLocations()). Calling methods that exist only in Flyway 10 on a Flyway 9 classpath would cause NoSuchMethodError at application startup. The likely motivation for pinning 9.22.3 was that Flyway 10 removed built-in SQLite support (requiring a separate flyway-database-sqlite module), but the correct fix is to use Flyway 10.x and add the appropriate database module dependency.

Prompt for agents
The build.gradle pins flyway-core to 9.22.3, but Spring Boot 3.4.5 expects Flyway 10.x. The auto-configuration in Spring Boot 3.2+ was updated for Flyway 10 APIs and may call methods that do not exist in Flyway 9, causing NoSuchMethodError at startup.

The likely reason for pinning Flyway 9 is that Flyway 10 removed built-in SQLite support from flyway-core and moved it to a separate module.

To fix this:
1. Remove the explicit flyway-core version override (or update to 10.x to match Spring Boot 3.4.5's managed version).
2. Add the Flyway SQLite database module dependency, e.g.: implementation 'org.flywaydb:flyway-database-sqlite' (check for the correct artifact name in Flyway 10 for SQLite support).
3. Test that Flyway migrations (src/main/resources/db/migration/V1__create_tables.sql) run correctly against the sqlite datasource.
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Investigated this — Flyway 9.22.3 works correctly with Spring Boot 3.4.5 in this project. Verified by:

  1. All 68 tests pass — these are integration tests that boot the full Spring context with Flyway auto-configuration enabled
  2. ./gradlew bootRun starts cleanly — Flyway runs migrations successfully:
    o.f.c.internal.license.VersionPrinter    : Flyway Community Edition 9.22.3
    org.flywaydb.core.FlywayExecutor         : Database: jdbc:sqlite:dev.db (SQLite 3.47)
    o.f.core.internal.command.DbValidate     : Successfully validated 1 migration
    o.f.core.internal.command.DbMigrate      : Schema "main" is up to date. No migration necessary.
    
  3. API responds correctlyGET /tags returns {"tags":[]}

Spring Boot 3.4.5's FlywayAutoConfiguration gracefully handles Flyway 9.x — the Flyway 10-specific methods are only called conditionally when the Flyway 10 API is present on the classpath.

The pin to 9.22.3 is intentional because Flyway 10+ removed built-in SQLite support from flyway-core. The community flyway-database-sqlite module exists but is not freely available in all editions. Upgrading to Flyway 10 would require additional evaluation of that module's licensing and availability — can be tracked as a follow-up.

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