Spring Core Annotations
org.springframework.beans.factory.annotation과 org.springframework.context.annotation 패키지의 주석을 사용하여 Spring DI 엔진의 기능을 활용할 수 있습니다.
DI-Related Annotations
@Autowired
- Constructor injection:
class Car {
Engine engine;
@Autowired
Car(Engine engine) {
this.engine = engine;
}
}
- Setter injection:
class Car {
Engine engine;
@Autowired
void setEngine(Engine engine) {
this.engine = engine;
}
}
- Field injection:
class Car {
@Autowired
Engine engine;
}
@Bean
- @Bean marks a factory method which instantiates a Spring bean:
@Bean
Engine engine() {
return new Engine();
}
@Bean("engine")
Engine getEngine() {
return new Engine();
}