maven-shade-plugin not including dependencies

["Désilets, Alain" <Al...@nrc-cnrc.gc.ca>]

I am trying to use maven-shade-plugin for the first time to create an uber-jar and I can’t even get the simplest example to work.

For example, I created a simple pom based on the example at the top of this page:

   https://maven.apache.org/plugins/maven-shade-plugin/examples/includes-excludes.html

The main difference with my pom is that I added a dependency to junit to test whether the shade plugin would include its classes in the jar. But when I run this command:


     mvn clean install -X

I get a build success, but when I inspect the generated jar, I don’t see the junit classes:


$ jar -tf spike-uber-jar-0.1.0.jar

META-INF/

META-INF/MANIFEST.MF

META-INF/maven/

META-INF/maven/org.example/

META-INF/maven/org.example/spike-uber-jar/

META-INF/maven/org.example/spike-uber-jar/pom.xml

META-INF/maven/org.example/spike-uber-jar/pom.properties

Not sure what I am doing wrong. Below is the pom file:


<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>spike-uber-jar</artifactId>
  <packaging>jar</packaging>
  <version>0.1.0</version>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <version>3.3.0</version>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
            <configuration>
              <artifactSet>
                <excludes>
                  <exclude>classworlds:classworlds</exclude>
                  <exclude>junit:junit</exclude>
                  <exclude>jmock:*</exclude>
                  <exclude>*:xml-apis</exclude>
                  <exclude>org.apache.maven:lib:tests</exclude>
                  <exclude>log4j:log4j:jar:</exclude>
                </excludes>
              </artifactSet>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>


  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

</project>



--

Alain Désilets
alain.desilets@nrc-cnrc.gc.ca<ma...@nrc-cnrc.gc.ca>

Research Officer                 Agent de recherche
National Research Council        Conseil national de recherches du Canada
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Re: maven-shade-plugin not including dependencies

[Alain Désilets <al...@gmail.com>]

On Sun, Jun 26, 2022 at 9:49 AM Alexander Kriegisch <
alexander@kriegisch.name> wrote:

>
> Firstly, you are not crerating a test JAR but a regular JAR with
> application classes, so of course test-scoped dependencies like JUnit
> are not going to be contained in the uber JAR.
>

Oh, right.

Secondly, you are even explicitly excluding JUnit, so how could you
> expect it to be included, even if it was not test-scoped?
>

Boy am I red in the face right now! I had copied that example from the web
and hadn't noticed the exclusion statement. Thx for pointing out the
obvious. All works now.

Alain

>
> > <exclude>junit:junit</exclude>
>
> --
> Alexander Kriegisch
> https://scrum-master.de
>
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Re: maven-shade-plugin not including dependencies

[Alexander Kriegisch <al...@kriegisch.name>]

> I get a build success, but when I inspect the generated jar, I don’t
> see the junit classes

Firstly, you are not crerating a test JAR but a regular JAR with
application classes, so of course test-scoped dependencies like JUnit
are not going to be contained in the uber JAR.

Secondly, you are even explicitly excluding JUnit, so how could you
expect it to be included, even if it was not test-scoped?

> <exclude>junit:junit</exclude>

-- 
Alexander Kriegisch
https://scrum-master.de

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