[jira] [Created] (MJAVADOC-704) Javadoc plugin does not respect jdkToolchain

["Gili (Jira)" <ji...@apache.org>]

Gili created MJAVADOC-704:
-----------------------------

             Summary: Javadoc plugin does not respect jdkToolchain
                 Key: MJAVADOC-704
                 URL: https://issues.apache.org/jira/browse/MJAVADOC-704
             Project: Maven Javadoc Plugin
          Issue Type: Bug
          Components: jar
    Affects Versions: 3.3.1
            Reporter: Gili


If I run the following using JDK 8:
{code:java}
<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-javadoc-plugin</artifactId>
        <version>3.3.1</version>
	<executions>
		<execution>
			<id>attach-javadocs</id>
			<goals>
				<goal>jar</goal>
			</goals>
			<configuration>
				<jdkToolchain>
					<version>11</version>
				</jdkToolchain>
				<!-- ... --->
		</execution>
	</executions>
</plugin>{code}
I get:
{code:java}
[INFO] Toolchain in maven-javadoc-plugin: JDK[C:\Program Files\Java\jdk-11.0.2]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.3.1:jar (attach-javadocs) on project core: Execution attach-javadocs of goal org.apache.maven.plugins:maven-javadoc-plugin:3.3.1:jar failed.
[...]
Caused by: java.lang.UnsupportedOperationException
    at org.codehaus.plexus.languages.java.jpms.CmdModuleNameExtractor.getModuleName (CmdModuleNameExtractor.java:46){code}
If I run the same code using JDK 11 I get past this point (I get an error relating to the contents of module-info):
{code:java}
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:3.3.1:jar (attach-javadocs) on project core: MavenReportException: Error while generating Javadoc: 
[ERROR] Exit code: 1 - C:\Users\Gili\Documents\pouch\core\src\main\java\module-info.java:3: error: module not found: org.slf4j
[ERROR]     requires org.slf4j;
[ERROR]                 ^
[ERROR] 
[ERROR] Command line was: cmd.exe /X /C ""C:\Program Files\Java\jdk-11.0.2\bin\javadoc.exe" @options @argfile"
[ERROR] 
[ERROR] Refer to the generated Javadoc files in 'C:\Users\Gili\Documents\pouch\core\target\apidocs' dir.
[ERROR] 
[ERROR] -> [Help 1] {code}
This seems to imply that {{jdkToolchain}} is being ignored.

On the other hand, if I use {{jdkToolchain}} with the maven-compiler-plugin it seems to work just fine. My toolchains.xml file contains:
{code:java}
<?xml version="1.0" encoding="UTF8"?>
<toolchains>
    <toolchain>
        <type>jdk</type>
        <provides>
            <version>11</version>
            <vendor>oracle</vendor>
        </provides>
        <configuration>
            <jdkHome>C:\Program Files\Java\jdk-11.0.2</jdkHome>
        </configuration>
    </toolchain>
</toolchains> {code}
Am I doing anything wrong? Or is this a possible bug in the plugin?



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