springboot-migration

Use when upgrading an existing Spring Boot application to Boot 4 — dependency transitions, starter renames, test-annotation migration (e.g. @MockBean → @MockitoBean), Jackson 3 issues, related Spring Modulith 2 or Testcontainers 2 upgrade work, or planning a phased migration. Not for greenfield project creation or isolated repository design.

1.25x

Quality

96%

Does it follow best practices?

Impact

99%

1.25x

Average score across 3 eval scenarios

Securityby

Passed

No findings from the security scan

Evaluation results

100%

18%

Upgrade Catalog Service to Spring Boot 4

Spring Boot 3→4 migration plan and code changes

Criteria

Without this skill

With this skill

Scanner invoked

100%

Target version 4.1.x

100%

Web starter renamed

100%

RestClient starter added

100%

@MockBean replaced

100%

@SpyBean replaced

100%

Correct import package

100%

@AutoConfigureMockMvc added

100%

TestRestTemplate opt-in

100%

TestConfig mock moved

100%

Plan format sections

100%

Per-phase status notes

100%

98%

18%

Upgrade Inventory Service to the Spring Boot 4 Stack

Full-stack Spring Boot 4 migration plan and execution

Criteria

Without this skill

With this skill

Scanner run

100%

Migration plan format

60%

Upgrade order in plan

100%

Spring Boot target version

100%

Modulith version paired with Boot

100%

Testcontainers artifact prefix

100%

Event publication schema columns

100%

Event publication backfill

100%

Testcontainers import packages

100%

Generic type removed

100%

LocalStack string services

100%

LocalStack getEndpoint

100%

LocalStack image version

100%

schema-initialization removed

100%

25%

Upgrade Legacy Retry and HTTP Client in a Spring Boot 4 Service

Migrate Spring Retry to native resilience and HttpServiceProxyFactory to @ImportHttpServices

Criteria

Without this skill

With this skill

spring-retry removed

100%

aspectj starter added

100%

aop starter removed

100%

EnableResilientMethods annotation

100%

Resilience import in service

100%

maxRetries parameter value

100%

retryFor renamed to includes

100%

Recover method removed

100%

ImportHttpServices annotation

100%

HttpServiceProxyFactory removed

100%

Serviceclient base-url property

100%

Phased migration report

100%

Repository: a-pavithraa/springboot-skills-marketplace
Path: plugins/springboot-architecture/skills/springboot-migration/SKILL.md
Commit: 6277c14

Evaluated: 21 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Upgrade Catalog Service to Spring Boot 4 Upgrade Legacy Retry and HTTP Client in a Spring Boot 4 Service Upgrade Inventory Service to the Spring Boot 4 Stack

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