Unable to use class from Custom Spring boot library - spring-boot

Question

Goal
I want to use a private repository as a library in other spring boot projects by hosting it as a GitHub package.
Library project
https://github.com/sagarnayak/privatecentralrepo
Client Project
https://github.com/sagarnayak/repoclientproject
Steps To Reproduce
the library project has a library001 module. this is what I want to use as a library for other projects.
In the library module pom file, I have added the repackage execution goal.
......
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
......
I want to use the module as a library and host it as a private GitHub package.
When I do the mvnw deploy in the library001 module this should create an exec jar and push to GitHub to use this library in other projects.
Github has this exec jar.
To use the jar in the client project I have added this as a dependency in the client project.
<dependency>
<groupId>com.sagar</groupId>
<artifactId>libraray001</artifactId>
<version>0.0.3-SNAPSHOT</version>
<classifier>exec</classifier>
</dependency>
This gets the project into the external libraries part of the client project. and this has the class that I want to use in the library (TestModel001).
But when I try to import this into any classes that I want to use it can not resolve the import.
How do I use the library project in this project?

Answer 1

I solved the issue with this -
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<id>repackage</id>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
The issue was with the pom file.
I was using the configurations for an older version.

Answer 2

The client project as visible at sagarnayak/repoclientproject is not configured to consume the artifacts from the private Maven repository hosted on GitHub as described in the Working with the Apache Maven registry.
Specifically, following settings are missing:
<repositories> configuration in pom.xml
<servers> configuration in local settings.xml
Add following elements to the pom.xml:
<repositories>
<repository>
<id>github</id>
<url>https://maven.pkg.github.com/sagarnayak/</url>
</repository>
</repositories>
Add following elements to the settings.xml
<servers>
<server>
<id>github</id>
<username>sagarnayak</username>
<password>YOUR_PERSONAL_ACCESS_TOKEN_HERE</password>
</server>
</servers>
Note: Keep settings.xml local to your machine - don't leak that Personal Access Token!

Answer 3

You are packaging the library via spring-boot-maven-plugin
It produces a JAR that has a self-running spring boot structure, and so you are unable to import it as a library correctly.
Try to remove spring-boot-maven-plugin from your libraray001 pom.xml, rebuild, republish and try to consume that artifact in your client project again, refreshing the dependencies and preferably bumping up the library version, to exclude caching possibility during the test.