[Spring Boot] @ConfigurationProperties

@ConfigurationProperties

• @Value 는 단일값을 주입하기에 적당하다.
• @ConfigurationProperties 를 통해 값을 주입할 경우 RelaxedBinding이 적용된다.
• RelaxedBinding ex) resources_url → resourcesUrl을 동일 키값으로 판단

build.gradle

implementation 'org.springframework.boot:spring-boot-starter-parent'

application.yaml

## config
spring:
  config:
    import:
      - classpath:/config-properties.yaml

config.yaml

site :
  url: localhost:8080
  resources_url: /resources

ConfigProperties.java

@Configuration
@ConfigurationProperties(prefix = "config")
public class ConfigProperties {
    private Site site;

    @Getter
    @NoArgsConstructor
    static class Site{
        String url;
        String resourcesUrl;
    }
}

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references

• https://sgc109.github.io/2020/07/07/spring-boot-configuration-properties/
• https://mangkyu.tistory.com/207