How to create different jar files within one build block in maven? - maven

Question

I have a maven project that compiles two different projects and then creates classes in this dir: ${project.build.directory}/classes
Where ${project.build.directory} points to the dir that pom.xml exists.
I’m using maven-jar-plugin with different “execution” blocks to make the jar files out of related directories/classes for each project. I’m very new to maven and have difficulty to define the right “include” and “exclude” directories.
This is the structure that my classes reside:
\target\classes\com
\target\classes\com\microsoft
\target\classes\com\google
\target\classes\org
The first jar file needs to be created out of these classes:
\target\classes\com\microsoft
\target\classes\org
And the second jar needs to be created out of these classes:
\target\classes\com\google
Following is the part of “build” block that has “execution” blocks to create these jars. The first jar is called: msn-prod and the other is called: google. As you see, I’ve tried all different combinations to create these jars and none worked - they exist in the following build block as the parts which are commented.
Can somebody please help me on this? Any help is greatly appreciated.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.3.2</version>
<executions>
<execution>
<id>msn-prod</id>
<goals><goal>jar</goal></goals>
<phase>generate-resources</phase>
<configuration>
<classifier>msn-prod</classifier>
<!-- <classesDirectory>${project.build.directory}/classes/com/microsoft</classesDirectory>
<includes>
<include>**/*.class</include>
</includes>
<classesDirectory>${project.build.directory}/classes/org</classesDirectory>
<includes>
<include>**/*.class</include>
</includes>-->
<classesDirectory>${project.build.directory}/classes</classesDirectory>
<!-- <includes>
<include>**/*.class</include>
</includes>-->
<!-- <excludes>
<exclude>**/com/google/*</exclude>
</excludes>-->
<!-- <excludes>
<exclude>**/google/*.class</exclude>
</excludes>-->
<includes>
<include>**/com/microsoft/*.class</include>
<include>**/org/*.class</include>
</includes>
<finalName>${msn.prod}-${msn.api.version}</finalName>
</configuration>
</execution>
<execution>
<id>google</id>
<goals><goal>jar</goal></goals>
<phase>generate-resources</phase>
<configuration>
<classifier>google</classifier>
<!-- <classesDirectory>${project.build.directory}/classes</classesDirectory>
<includes>
<include>**/com/google/*.class</include>
</includes>-->
<classesDirectory>${project.build.directory}/classes/com/google</classesDirectory>
<includes>
<include>**/*.class</include>
</includes>
<finalName>${google}-${google.api.version}</finalName>
</configuration>
</execution>
</executions>
</plugin>

Answer 1

You are violating the Maven best practice of one build artifact per module and therefore running into trouble. Just break it up into multiple projects and it will be easy.