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Showing posts with the label Jakarta Migration

A New Collection of Thoughtful Learning Apps — Now Available on iOS & Android

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I’m excited to share a set of mobile apps I’ve recently completed and published on both the Google Play Store and the Apple App Store. These apps are designed with a simple goal in mind: to make meaningful, structured content more accessible, whether you’re studying theology or improving your English vocabulary. 📱 Now Available on Both Platforms All apps are live and available for download: Google Play Developer Page: https://play.google.com/store/apps/dev?id=5835943159853189043 Apple App Store Developer Page: https://apps.apple.com/ca/developer/q-z-l-corp/id1888794100 📖 Theology & Confession Study Apps For those interested in Reformed theology and classical Christian teachings, I’ve developed a series of apps that present foundational texts in a clean, focused reading format: The Belgic Confession Canons of Dort Heidelberg Catechism Westminster Shorter Catechism Each app is designed to provide a distraction-free experience, making it easier to read, reflect, and revisit these im...
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Spring Boot 4 Upgrade Pitfalls Guide: Java 21, Jakarta, Jackson 3, and Copilot Automation

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Spring Boot 4 Upgrade Pitfalls Guide: Java 21, Jakarta, Jackson 3, and Copilot Automation Spring Boot 4 introduces major ecosystem changes and many teams are planning to upgrade their applications to Java 21 and Spring Boot 4.0.x . However, real-world upgrades often reveal multiple compatibility issues such as: Jakarta package migration breaking compilation Jackson 3 JSON behavior changes Spring Cloud Gateway configuration updates Test framework migration issues Micrometer / Observability runtime errors This article summarizes a production-ready upgrade strategy and demonstrates how to use GitHub Copilot Agent to automate much of the migration work. Table of Contents Why Upgrade to Spring Boot 4 Recommended Upgrade Strategy Using GitHub Copilot for Automated Migration Java 21 Upgrade Spring Boot 4 Upgrade Jakarta Migration Jackson 3 Changes Spring Cloud Gateway Changes Common Upgrade Pitfalls Upgrade Verification Checklist Why Upgrade to Spring...
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Spring Boot 4 升级踩坑指南：Java 21、Jakarta、Jackson 3 和 Copilot 自动升级

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Spring Boot 4 升级踩坑指南：Java 21、Jakarta、Jackson 3 和 Copilot 自动升级 Spring Boot 4 已经发布，很多团队开始计划将系统升级到 Java 21 与 Spring Boot 4.0.3 。 然而在实际升级过程中，开发者会遇到很多问题，例如： Jakarta 包迁移导致编译失败 Jackson 3 导致 JSON 反序列化变化 Spring Cloud Gateway 配置结构变化 测试依赖和注解迁移 Observability / Micrometer 监控异常 本文总结了一套 企业级 Spring Boot 4 升级流程 ， 并介绍如何使用 GitHub Copilot Agent 自动生成升级 PR。 目录 为什么升级 Spring Boot 4 升级总体策略 使用 Copilot 自动升级 Java 21 升级 Spring Boot 4 升级 Jakarta 迁移 Jackson 3 变化 Spring Cloud Gateway 配置变化 常见踩坑 升级验证 Checklist 为什么升级 Spring Boot 4 Spring Boot 4 带来了多个重要变化： 默认支持 Java 21 Jakarta API 全面替换 javax Jackson 3 JSON 生态升级 Micrometer Observability 改进 Spring Security 现代 DSL 对于长期维护的系统来说，升级可以获得： 更好的性能 更安全的依赖 更好的云原生支持 升级总体策略 升级应该按阶段进行： 升级 Java 升级 Spring Boot 进行 Jakarta 迁移 依赖版本对齐 修复配置变化 修复测试 验证运行 每一步都必须 编译 + 测试 + 启动验证 。 使用 Copilot 自动升级 对于大型代码库，手动升级非常耗时。 GitHub Copilot Agent 可以自动分析项目结构， 并生成完整升级 Pull Request。 推荐 Prompt Goal: Upgrade this project ...
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Spring Boot 4 Upgrade Guide (Using GitHub Copilot Agent)

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Spring Boot 4 Upgrade Guide (Using GitHub Copilot Agent) Upgrading to Java 21 and Spring Boot 4.0.3 is not just a dependency bump — it requires a structured migration strategy that preserves behavior, maintains stability, and ensures compatibility across the ecosystem. This guide outlines a production-ready upgrade framework designed for enterprise Spring services. It integrates phased migration, official Spring guidance, and GitHub Copilot Agent automation to produce clean, reviewable upgrade pull requests. Upgrade Objectives Upgrade to Java 21 Upgrade to Spring Boot 4.0.3 Align with compatible Spring Cloud version Preserve business logic Maintain Maven build Ensure compilation, tests, and successful startup Upgrade Principles Preserve existing behaviour Do NOT remove business logic Make minimal but correct changes Follow official Spring migration guidance Upgrade incrementally with validation after each phase Official Migration Reference All...
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