Is there a maven jigsaw jlink plugin?

问题:

Does maven have a plugin for the new Java 9 jlink I have searched online but have not been able to find anything official from the maven team.

回答1:

Yes. There has been some progress made to create one on Github/maven-plugins for the same.

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-jlink-plugin</artifactId>
    <version>3.0.0-SNAPSHOT</version>
</plugin>

The plugin in its code reads to be adaptive to JEP-282 and JEP-220 from the proposals.

And though this might look like a link too many answer. There is a working example from @khmarbaise on Github as well for this, which requires a toolchain with -

<configuration>
  <jdkHome>/Library/Java/JavaVirtualMachines/jdk1.9.0_ea+170.jdk/Contents/Home</jdkHome>
</configuration>

Plus a side note from the author quoting -

Currently not more than a Proof of Concept. Everything here is speculative!

Edit1:- As shared in the comments, additional details could be found @ How to create a Java runtime with Maven.

Edit2:- Dated 10 November, 2018 one can upgrade to using maven-jlink-plugin:3.0.0-alpha-1 and still provide some valuable feedback.

回答2:

I'm working on ModiTect, general tooling around Java 9 modules. One of the goals of the ModiTect Maven plug-in lets you create module runtime images via jlink:

<plugin>
    <groupId>org.moditect</groupId>
    <artifactId>moditect-maven-plugin</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <executions>
        <execution>
            <id>create-runtime-image</id>
            <phase>package</phase>
            <goals>
                <goal>create-runtime-image</goal>
            </goals>
            <configuration>
                <modulePath>
                    <path>${project.build.directory}/modules</path>
                </modulePath>
                <modules>
                    <module>com.example.module1</module>
                    <module>com.example.module2</module>
                </modules>
                <launcher>
                    <name>helloWorld</name>
                    <module>com.example.module1</module>
                </launcher>
                <outputDirectory>
                    ${project.build.directory}/jlink-image
                </outputDirectory>
            </configuration>
        </execution>
    </executions>
</plugin>

The plug-in is under active development right now and must be built from source for the time being (will deploy a first version to Maven Central soon).

回答3:

there is mvn-jlink plugin which allows to call jdeps and jlink (and any tool provided by jdk), also it can download and unpack needed openjdk version from ADOPT and LIBERICA, such way allows build cross-platform images

<plugin>
    <groupId>com.igormaznitsa</groupId>
    <artifactId>mvn-jlink-wrapper</artifactId>
    <version>1.0.0</version>
    <executions>
        <execution>
            <id>call-jlink</id>
            <goals>
                <goal>jlink</goal>
            </goals>
            <configuration>
                <jdepsReportPath>${project.build.directory}${file.separator}jdeps.out</jdepsReportPath>
                <output>${project.build.directory}${file.separator}preparedJDK</output>
                <addModules>
                    <module>java.compiler</module>
                </addModules>
                <options>
                    <option>--compress=2</option>
                    <option>--no-header-files</option>
                    <option>--no-man-pages</option>
                </options>
            </configuration>
        </execution>
    </executions>
</plugin>