Cannot find jar if classifier is used

[galvanopus]

Create sample maven project:

mvn archetype:generate -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DgroupId=com.example.excelsior -DartifactId=sample-application

Add classifier and excelsior-jet to pom.xml:

<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example.excelsior</groupId>
    <artifactId>sample-application</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>sample-application</name>
    <url>http://maven.apache.org</url>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    <dependencies>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>3.8.1</version>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <classifier>classifier</classifier>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.excelsiorjet</groupId>
                <artifactId>excelsior-jet-maven-plugin</artifactId>
                <version>0.3.0</version>
                <configuration>
                    <mainClass>com.example.excelsior.App</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Build:

mvn clean jet:build

...
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ sample-application ---
[INFO] Building jar: C:\Development\com.example.excelsior\sample-application\target\sample-application-1.0-SNAPSHOT-classifier.jar
[INFO]
[INFO] <<< excelsior-jet-maven-plugin:0.3.0:build (default-cli) < package @ sample-application <<<
[INFO]
[INFO] --- excelsior-jet-maven-plugin:0.3.0:build (default-cli) @ sample-application ---
[ERROR] Jar C:\Development\com.example.excelsior\sample-application\target\sample-application-1.0-SNAPSHOT.jar was not found
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.673 s
[INFO] Finished at: 2016-01-24T16:48:12+03:00
[INFO] Final Memory: 19M/294M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.excelsiorjet:excelsior-jet-maven-plugin:0.3.0:build (default-cli) on project sample-application: Jar C:\Development\com.example.excelsior\sample-application\target\sample-application-1.0-SNAPSHOT.jar was not found -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

[pjBooms]

Thank you for the bug report.

As a workaround you may specify <mainJar> plugin parameter referencing target jar artifact.

[galvanopus]

Yep, <mainJar>${project.build.directory}\${project.artifactId}-${project.version}-classifier.jar</mainJar> makes a deal.

[pjBooms]

I have corrected the error message explicitly referring <mainJar> plugin parameter for this case.
Applying the classifier automatically is not so easy to implement because it is a parameter of maven-jar-plugin. Moreover, you can build the jar with another plugin and that plugin can have its own configuration parameters for the final name.

And I did not find a regular way to know the exact name of the target artifact of the build from Maven configuration environment. If you find such a way, please let me know.

[galvanopus]

Thank you. I am using the following configuration right now:

<properties>
    <maven.jar.classifier>external-lib-${external-lib.version}</maven.jar.classifier>
</properties>
...
<configuration>
    <mainClass>com.example.excelsior.App</mainClass>
    <mainJar>${project.build.directory}\${project.build.finalName}-${maven.jar.classifier}.jar</mainJar>
    <outputName>${project.build.finalName}-${maven.jar.classifier}</outputName>
</configuration>

[galvanopus]

It seems it is easier to use <finalName> instead of classifier. In such case plugin does not need <mainJar> configuration:

<build>
    <finalName>${project.artifactId}-${project.version}-external-lib-${external-lib.version}</finalName>
</build>