从命令行更改Maven-shade-plugin outputFile

Question

I am using the maven-shade-plugin in my pom.xml and I want to be able to dynamically set the from the command line, something like this: mvn -outputFile=C:/Users/Oscar/Desktop/MyJar.jar

I don't want to hardcode a filepath directly in the pom.xml because I don't want it in the repo. And on our production server I want to be able to specify an output path for the shaded jar. And on my local development machine I want to be able to specify my own path.

Is it possible to do something like this?

<plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-shade-plugin</artifactId>
            <version>3.0.0</version>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>shade</goal>
                    </goals>
                    <configuration>
                        <createDependencyReducedPom>false</createDependencyReducedPom>
                        <relocations>
                            <relocation>
                                <pattern>com.zaxxer.hikari</pattern>
                                <shadedPattern>io.github.hornta.lib.hikari</shadedPattern>
                            </relocation>
                            <relocation>
                                <pattern>com.google.gson</pattern>
                                <shadedPattern>io.github.hornta.lib.gson</shadedPattern>
                            </relocation>
                            <relocation>
                                <pattern>org.slf4j</pattern>
                                <shadedPattern>io.github.hornta.lib.slf4j</shadedPattern>
                            </relocation>
                            <relocation>
                                <pattern>org.flywaydb.core</pattern>
                                <shadedPattern>io.github.hornta.lib.flywaydb</shadedPattern>
                            </relocation>
                        </relocations>
                       <outputFile>I NEED TO SET THIS PATH FROM COMMAND LINE(not having it in the repo)</outputFile>
                    </configuration>
                </execution>
            </executions>
        </plugin>

Answer 1

I would suggest using a properties file to set the value, and then add the properties file to your .gitignore . This is actually a pretty common use case, as values like this will vary across deployment environments. See this question or this article for discussion around the issue.

Answer 2

You can use a system property to define the value of outputFile

Change the line in your pom.xml

<outputFile>${outputFilePath}</outputFile>

And then use the variable in command line

mvn -DoutputFilePath=C:/Users/Oscar/Desktop/MyJar.jar ...

You can define the default value in the properties of your pom.xml

<properties>
    <outputFilePath>C:/Users/Oscar/Desktop/Default/MyJar.jar</outputFilePath>
</properties>