Maven Get Specific Classes

Question

Is there a way that I can get maven to only include specific .class files when importing dependencies into uber jar (shade). I'm looking for a way to get files that contain "Client" in their name to be pulled out of the dependency jars and added to the final jar. Any help would be wonderful.

Answer 1

You should be able to use the maven-dependency-plugin like this:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-dependency-plugin</artifactId>
            <version>2.10</version>
            <executions>
                <execution>
                    <id>unpack</id>
                    <phase>package</phase>
                    <goals>
                        <goal>unpack</goal>
                    </goals>
                    <configuration>
                        <artifactItems>
                            <artifactItem>
                                <groupId><!--dependency groupId--></groupId>
                                <artifactId><!--dependency artifactId--></artifactId>
                                <version><!--depedency version--></version>
                                <includes>**/*Client*.java</includes>
                            </artifactItem>
                        </artifactItems>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

Answer 2

If you are using the Maven Shade Plugin, you can a filter, which will allow you to filter which artifacts get shaded, but as well as which classes to exclude or include.

Here's the example they provide:

<filters>
  <filter>
    <artifact>junit:junit</artifact>
    <includes>
      <include>org/junit/**</include>
    </includes>
    <excludes>
      <exclude>org/junit/experimental/**</exclude>
    </excludes>
  </filter>
</filters>