Maven - How to remove module-info.class warning for shaded .jar?

Question

So here's my problem...

I'm packaging a Spring Boot app into an uber jar using the maven-shade plugin. Simple, right? Well, it is except as of recently I'm getting the following warning at the end of mvn clean package:

[WARNING] Discovered module-info.class. Shading will break its strong encapsulation.

It's not actually breaking anything but I'm a perfectionist and this is driving me nuts? How do I get rid of it? I've tried many things but no success.

Please help :(

Answer 1

As referenced in a comment, filtering out the file in the shade plugin seems to work fine for me.

Here's what my maven-shade-plugin config looks like:

        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.2.1</version>
            <configuration>
                <filters>
                    <filter>
                        <artifact>*:*</artifact>
                        <excludes>
                            <exclude>module-info.class</exclude>
                            <exclude>META-INF/*.SF</exclude>
                            <exclude>META-INF/*.DSA</exclude>
                            <exclude>META-INF/*.RSA</exclude>
                        </excludes>
                    </filter>
                </filters>
            </configuration>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>

The key line is the <exclude>module-info.class</exclude>. The filter excludes that file whenever it sees it, in any artifact (*:* = any artifact). (The other three excludes I use to get rid of bugs with signature files in dependencies)

I haven't noticed any unwanted side effects from doing this, and the warning is now gone!