Using Expressions in Spring application.properties file

Question

Can expressions be used as a right-hand-side value in a Spring application.properties file?

For example, something like this:

logging.level.com.acme=         


        

Answer 1

No this is not possible, From spring boot reference:

Feature @ConfigurationProperties

SpEL evaluation No

Instead you can have an application-default.properties in production and in it define loglevel=WARN. And in your application.properties:

loglevel=DEBUG
logging.level.com.acme=${loglevel}

The profile-specific properties file(-default by default) should override the properties from application.properties, more info here.