Maven Site Plugin with Java9

Question

I have a problem running my CI builds on Travis with Java9 (Oracle JDK 9).

I fails on maven-site-plugin - after removing it everything works smothly.

I tried removing everything else to check for possible dependencies collisions, left out with just this one plugin build still fails. It is just a pom container, still failing with just a simple site plugin (updated to latest version that claimed to be java9 ready).

Here are all of the resources:

• failing Travis build
• Travis configuration
• project POM file

Looking for similar problems on the web I found that usually it's plugin compatibility (all of the plugins ware updated) or different dependencies versions, but I removed all of them and it still fails.

The builds run locally on OpenJDK 9 perfectly fine.

-edit-

After applying hint from @nullpointer :

• updated POM
• CI error

Answer 1

You should probably wait and update to using version 3.7 of site plugin as mentioned here.

Seems like you are encountering something similar to #MSITE-796

Quoting further from the same link:-

The release will need a little bit more time due to pending SNAPSHOT-dependencies which need to be released first. So either have a little bit more patience or add doxia-sitetools 1.7.5 as a dependency to the maven-site-plugin in your own project.

<dependency>
    <groupId>org.apache.maven.doxia</groupId>
    <artifactId>doxia-sitetools</artifactId>
    <version>1.7.5</version>
</dependency>

-edit-

As doxia-sitetools is just a pom container project one needs to update all of it's modules directly:

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-site-plugin</artifactId>
                <version>3.6</version>
                <dependencies>
                    <dependency>
                        <groupId>org.apache.maven.doxia</groupId>
                        <artifactId>doxia-decoration-model</artifactId>
                        <version>1.7.5</version>
                    </dependency>

                    <dependency>
                        <groupId>org.apache.maven.doxia</groupId>
                        <artifactId>doxia-skin-model</artifactId>
                        <version>1.7.5</version>
                    </dependency>

                    <dependency>
                        <groupId>org.apache.maven.doxia</groupId>
                        <artifactId>doxia-integration-tools</artifactId>
                        <version>1.7.5</version>
                    </dependency>

                    <dependency>
                        <groupId>org.apache.maven.doxia</groupId>
                        <artifactId>doxia-site-renderer</artifactId>
                        <version>1.7.5</version>
                    </dependency>

                    <dependency>
                        <groupId>org.apache.maven.doxia</groupId>
                        <artifactId>doxia-doc-renderer</artifactId>
                        <version>1.7.5</version>
                    </dependency>
                </dependencies>
            </plugin>