Take logback.xml to outside of the jar

Question

I am using logback with slf4j in my Maven Java project. Currently logback config file (logback.xml) is in src -> main -> resources folder. And it is working fine.
My issue is, I need to give my client the ability to configure logging as he prefers. For that logback.xml should be outside the jar when I build it. But as xml is inside src folder it is inside the jar and no one can change it after build.
How to achieve this?

Answer 1

Logback config file location can be specified in application.properties or application.yml.

application.yml

logging:
  config: logback-spring.xml

This allows you to place jar and log-back.xml at the same folder.

Please note that logback-spring.xml file in your project folder should not be included in your jar. This can be achieved setting on build.gradle or pom.xml.

build.gradle

bootJar {
  archiveName 'your-project.jar'
  exclude("*.xml")
}