Demo of Spring Boot 2.7.0 with actuator endpoints and using maven shade 3.3.0 leading to broken jar

tl;dr

Spring Boot 2.7.0 with actuator endpoints which is shaded using maven shade plugin leads to 404 on actuator endpoints

How to reproduce

Build and run this project using mvn clean package && java -jar target/demo-0.0.1-SNAPSHOT.jar

Test Requests

curl http://localhost:8080/test/ping returns http 200 pong -> works

curl http://localhost:8080/actuator/health return http 200 {"status":"UP"} -> does not work, returns 404

Findings so far to "resolve" the issue

• Downgrading to Spring 2.6.8
• Building the jar with spring-boot-maven-plugin without shading
• Running the project directly in IntelliJ

Final solution

See spring-projects/spring-boot#31316, credits to @philwebb

<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
  <resource>META-INF/spring.handlers</resource>
  <resource>META-INF/spring.schemas</resource>
  <resource>META-INF/spring/org.springframework.boot.actuate.autoconfigure.web.ManagementContextConfiguration.imports</resource>
  <resource>META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports</resource>
</transformer>