Maven compile fails with generated sources
Issue
I’m using exec-maven-plugin to generate classes during the maven build in the folder target/generated-sources/java. When I compile, I see the classes are correctly created in this folder. However, the build fails because I cannot reference these classes from the code
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
configuration here
</configuration>
</plugin>
Solution
The issue is that the path where sources are generated is not within the maven source paths. You can fix this with build-helper-maven-plugin
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/generated-sources/java</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>