spring-boot-dependency-injection

This skill captures the dependency injection approach promoted in this repository: constructor-first design, explicit optional collaborators, and deterministic configuration that keeps services testable and framework-agnostic.

Follow these steps to implement proper dependency injection in Spring Boot:

List all collaborators required by each class. Distinguish between mandatory dependencies (required for operation) and optional dependencies (feature-specific).

為 Spring Boot 專案提供依賴注入模式，涵蓋建構函數優先模式、可選協作者處理、bean 選擇和驗證實踐。在配置 bean、連接依賴項或排除注入問題時使用。 來源：giuseppe-trisciuoglio/developer-kit。