Ah, I underestimated the trickiness of the issue you're facing since I
hit a similar error you reported when simply compiling the annotation-
processor module using a jake build (but it compiles fine with jdk9/dev).
I'd also note that your -J--add-modules -Jjava.xml.bind workaround -
works on jdk9/dev but doesn't seem to work on jake ("Module
java.xml.bind not found"), so there does appear to be some issues to
get to the bottom of here.
Thanks!
/Claes
On 2016-11-20 23:43, Eirik Bjørsnøs wrote:
Claes,
I tested this using javac directly on the command line, like this
$ cd example-module
$ javac -J--add-modules -Jjava.xml.bind -d target/classes -classpath
target/classes:$HOME/.m2/repository/com/example/annotation-processor/1.0-SNAPSHOT/annotation-processor-1.0-SNAPSHOT.jar
-sourcepath src/main/java/ -target 1.9 -source 1.9
src/main/java/com/example/module/SomeClass.java
java.xml? true
java.xml.bind? true
class javax.xml.bind.JAXBContext
The above works (you can see that the processor is applied prints some
debug info)
Maven seems to the -J arguments somehow. Here's my current
maven-compiler-plugin configuration:
<configuration>
<fork>true</fork>
<compilerArgs>
<arg>-J--add-modules</arg>
<arg>-Jjava.xml.bind</arg>
</compilerArgs>
</configuration>
This gives the following output from mvn clean compile -X :
[DEBUG] Command line options:
[DEBUG] -d target/classes -classpath
target/classes:$HOME/.m2/repository/com/example/annotation-processor/1.0-SNAPSHOT/annotation-processor-1.0-SNAPSHOT.jar:
-sourcepath src/main/java:target/generated-sources/annotations
src/main/java/com/example/module/SomeClass.java
src/main/java/com/example/module/SomeAnnotation.java -s
target/generated-sources/annotations -g -nowarn -target 1.9 -source 1.9
(Absolute paths cleaned up for readability..)
Eirik.
On Sun, Nov 20, 2016 at 11:23 PM, Claes Redestad <claes.redes...@oracle.com>
wrote:
Hi Eirik,
compiling com.example.processor.ProcessorUsingJavaXmlBind standalone
seems to work fine with --add-modules java.xml.bind - instead it
appears as if maven-compiler-plugin doesn't preserve argument order, so
you need to use the joined argument form in your pom.xml:
<arg>--add-modules=java.xml.bind</arg>
I tried this on your minified example, and seems to work. Thanks!
/Claes
On 2016-11-20 22:57, Eirik Bjørsnøs wrote:
Hi there!
I'm giving Java 9 and Jigsaw a spin on a moderately complex project.
(Interestingly, the project is itself a module system, so we do stuff like
annotation processing and dynamic reloading of class loader graphs and
services)
I'm experienced enough with advanced Java to have shot myself in the foot
with a java.lang.ClassNotFoundException: java.lang.ClassNotFoundException
:-) However, I've only recently been looking into Jigsaw in concrete
terms.
So please be kind when I expose my ignorance :-)
Initially, I just want to see if I can get the project to compile on Java
9.
So I'm using --add-modules to javac here and there to add modules not
available to the unnamed module by default. (Not making any proper modules
yet, that will be the next step).
This seems to be working fine, except for one of our annotation
processors,
which happens to use JAXBContext from java.xml.bind.
I added --add-modules to javac (via Maven configuration), but my
annotation
processor still can't load JAXBContext and fails with this message:
$ java -version
java version "9-ea"
Java(TM) SE Runtime Environment (build 9-ea+144)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+144, mixed mode)
$ mvn clean install -e
This fails with:
Caused by: java.lang.NoClassDefFoundError: javax/xml/bind/JAXBContext
at
com.example.processor.ProcessorUsingJavaXmlBind.process(Proc
essorUsingJavaXmlBind.java:24)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment.callProcessor(JavacProcessingEnvironment.java:959)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:875)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment.access$2100(JavacProcessingEnvironment.java:106)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment$Round.run(JavacProcessingEnvironment.java:1182)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment.doProcessing(JavacProcessingEnvironment.java:1290)
at
jdk.compiler/com.sun.tools.javac.main.JavaCompiler.processAn
notations(JavaCompiler.java:1260)
at
jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(
JavaCompiler.java:939)
at
jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl$1.call(
JavacTaskImpl.java:106)
at
jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl$1.call(
JavacTaskImpl.java:100)
at
jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExc
eptions(JavacTaskImpl.java:137)
... 28 more
I've confirmed that this reproduces using only javac:
$ cd example-module
$ javac -d target/classes -classpath
target/classes:$HOME/.m2/repository/com/example/annotation-
processor/1.0-SNAPSHOT/annotation-processor-1.0-SNAPSHOT.jar:
-sourcepath src/main/java/ -target 1.9 -source 1.9 --add-modules
java.xml.bind src/main/java/com/example/module/SomeClass.java
java.xml? true
java.xml.bind? false
An annotation processor threw an uncaught exception.
Consult the following stack trace for details.
java.lang.NoClassDefFoundError: javax/xml/bind/JAXBContext
at
com.example.processor.ProcessorUsingJavaXmlBind.process(Proc
essorUsingJavaXmlBind.java:24)
at
jdk.compiler/com.sun.tools.javac.processing.JavacProcessingE
nvironment.callProcessor(JavacProcessingEnvironment.java:959)
I've reduced this to a minimal-ish test case, available on Github:
https://github.com/eirbjo/java-xml-bind-processor
Here's the annotation processor:
https://github.com/eirbjo/java-xml-bind-processor/blob/maste
r/annotation-processor/src/main/java/com/example/processo
r/ProcessorUsingJavaXmlBind.java
The class under compilation and the annotation:
https://github.com/eirbjo/java-xml-bind-processor/blob/maste
r/example-module/src/main/java/com/example/module/SomeClass.java
https://github.com/eirbjo/java-xml-bind-processor/blob/maste
r/example-module/src/main/java/com/example/module/SomeAnnotation.java
Any clues?
Cheers,
Eirik.
