Does application.yaml refer to the contents of other configuration files?

configuration file of how application.yaml in SpringBoot is referenced.

spring:
    datasource:
        druid:
            url: ${jdbc.url}
            username: ${jdbc.username}

where jdbc.url , jdbc.username is in another file jdbc.yaml .

how is it implemented?

Yaml springboot spring java

Mar.07,2021

you can use maven's profiles. Placeholder replacement is performed during build based on the profiles configuration in maven.

you can name the jdbc.yaml file application-jdbc.yaml .
set the jvm parameter -Dspring.profiles.active=jdbc when starting spring-boot , so that spring-boot will load the application.yaml configuration file and the corresponding profile configuration file.

multiple profile are separated by commas

$ java -Dspring.profiles.active=jdbc,jdbc2 -jar [xxx].jar

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