Dependency Injection Revisited
summary
Covers practical DI details in Spring Framework 6.2 and a new programmatic unit landing in 7.0 milestones: lazy injection at parameter level creates a type-preserving proxy, while ObjectProvider lazy handle gives on‑demand access without a proxy (getObject returns the real bean), collections inject pre‑initialized ordered instances (ordering forces full initialization), qualifiers and parameter names resolve conflicts, and BeanRegister in 7.0 lets code register beans conditionally, is tooling‑aware and AOT‑friendly for reproducible programmatic configuration.
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chapters (9)
- 0:00Dependency injection intro
- 7:21Injection points and beans
- 15:52Lazy and nullable injection
- 24:03Collection and stream injection
- 33:10ObjectProvider use cases
- 36:37Bean definitions and config
- 41:32BeanRegister in Spring 7
- 50:04BeanRegister benefits
- 52:53Q&A
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