XJC Maven Plugin(jaxb2-maven-plugin) Java 11 Migration Issues

Question

I am currently working on java 11 migration project where jaxb2-maven-plugin has been used for XJC task. As XJC executable is not present in the JDK 11 version, I am getting below mentioned errors.

    [ERROR] Failed to execute goal org.codehaus.mojo:jaxb2-maven-plugin:2.2:xjc (xjc-schema1) on project paymaster-service: Execution xjc-schema1 of goal org.codehaus.mojo:jaxb2-maven-plugin:2.2
:xjc failed: A required class was missing while executing org.codehaus.mojo:jaxb2-maven-plugin:2.2:xjc: com/sun/codemodel/CodeWriter
[ERROR] -----------------------------------------------------
[ERROR] realm =    plugin>org.codehaus.mojo:jaxb2-maven-plugin:2.2
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/C:/Users/voletis/.m2/repository/org/codehaus/mojo/jaxb2-maven-plugin/2.2/jaxb2-maven-plugin-2.2.jar
[ERROR] urls[1] = file:/C:/Users/voletis/.m2/repository/javax/xml/bind/jaxb-api/2.2.11/jaxb-api-2.2.11.jar
[ERROR] urls[2] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-core/2.2.11/jaxb-core-2.2.11.jar
[ERROR] urls[3] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.2.11/jaxb-runtime-2.2.11.jar
[ERROR] urls[4] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-xjc/2.2.11/jaxb-xjc-2.2.11.jar
[ERROR] urls[5] = file:/C:/Users/voletis/.m2/repository/org/glassfish/jaxb/jaxb-jxc/2.2.11/jaxb-jxc-2.2.11.jar
[ERROR] urls[6] = file:/C:/Users/voletis/.m2/repository/com/thoughtworks/qdox/qdox/2.0-M3/qdox-2.0-M3.jar
[ERROR] urls[7] = file:/C:/Users/voletis/.m2/repository/org/sonatype/sisu/sisu-inject-bean/1.4.2/sisu-inject-bean-1.4.2.jar
[ERROR] urls[8] = file:/C:/Users/voletis/.m2/repository/org/sonatype/sisu/sisu-guice/2.1.7/sisu-guice-2.1.7-noaop.jar
[ERROR] urls[9] = file:/C:/Users/voletis/.m2/repository/org/sonatype/aether/aether-util/1.7/aether-util-1.7.jar
[ERROR] urls[10] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-interpolation/1.14/plexus-interpolation-1.14.jar
[ERROR] urls[11] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-component-annotations/1.5.5/plexus-component-annotations-1.5.5.jar
[ERROR] urls[12] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.3/plexus-sec-dispatcher-1.3.jar
[ERROR] urls[13] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
[ERROR] urls[14] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-compiler-api/2.5/plexus-compiler-api-2.5.jar
[ERROR] urls[15] = file:/C:/Users/voletis/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.22/plexus-utils-3.0.22.jar
[ERROR] urls[16] = file:/C:/Users/voletis/.m2/repository/org/sonatype/plexus/plexus-build-api/0.0.7/plexus-build-api-0.0.7.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import  from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] : com.sun.codemodel.CodeWriter
[ERROR] -> [Help 1]
[ERROR]

Below is my pom.xml

<plugin>
   <groupId>org.codehaus.mojo</groupId>
   <artifactId>jaxb2-maven-plugin</artifactId>
   <version>2.2</version>
   <executions>
      <execution>
         <id>xjc-schema1</id>
         <goals>
            <goal>xjc</goal>
         </goals>
         <configuration>
            <target>2.2</target>
            <schemaFiles>SubmitPaymentBatch/SubmitPaymentRequest.xsd</schemaFiles>
            <packageName>app.test.services.submitpayment.request</packageName>
            <clearOutputDir>false</clearOutputDir>
         </configuration>
      </execution>
</plugin>

I have added necessary dependencies like JAXB, JAXB-IMPL, etc., as per java 11 requirements. But still not able to fix the issues. Do you have any suggested fix for this ? Thank in Advance.

Answer 1

jaxb2-maven-plugin 2.5.0 is now compatible with Java 11:

• https://github.com/mojohaus/jaxb2-maven-plugin/issues/43
• https://github.com/mojohaus/jaxb2-maven-plugin/releases/tag/jaxb2-maven-plugin-2.5.0

Answer 2

I had issues with making jaxb working with maven and Java 11 too. My solution looks as follows:

<plugin>
  <groupId>org.codehaus.mojo</groupId>
  <artifactId>jaxb2-maven-plugin</artifactId>
  <version>2.5.0</version>
  <executions>
    <execution>
      <id>xjc</id>
      <phase>generate-sources</phase>
      <goals>
        <goal>xjc</goal>
      </goals>
    </execution>
  </executions>
  <configuration>
    <packageName>de.powerstat.my.generated</packageName>
  </configuration>
  <dependencies>
    <dependency>
      <groupId>com.sun.activation</groupId>
      <artifactId>javax.activation</artifactId>
      <version>1.2.0</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-runtime</artifactId>
      <version>2.3.3</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-core</artifactId>
      <version>2.3.0.1</version>
    </dependency>

    <dependency>
      <groupId>org.glassfish.jaxb</groupId>
      <artifactId>jaxb-xjc</artifactId>
      <version>2.3.3</version>
    </dependency>

  </dependencies>
</plugin>

Hope this helps others.

Answer 3

I have fixed this issue by following below reference link.

https://github.com/davidmoten/jax-maven-plugin

As per the above tutorial reference, I have modified my plugin as below and i am able to fix this.

<plugin>
   <groupId>com.github.davidmoten</groupId>
   <artifactId>jax-maven-plugin</artifactId>
   <version>VERSION_HERE</version>

   <executions>
      <execution>
         <id>xjc-schema1</id>
         <goals>
            <goal>xjc</goal>
         </goals>
         <configuration>
            <target>2.2</target>
            <schemaFiles>SubmitPaymentBatch/SubmitPaymentRequest.xsd</schemaFiles>
            <packageName>app.test.services.submitpayment.request</packageName>
            <clearOutputDir>false</clearOutputDir>
         </configuration>
      </execution>
   </executions>
</plugin>

Answer 4

I've just found a workaround for problems with using jaxb2-maven-plugin with Java 11. It consists of adding extra dependencies in pom.xml and adding an extra, dummy XSD file to the project, next to proper XSD files. I've put it altogether in my blog-post here: https://artofcode.wordpress.com/2019/02/26/jaxb2-maven-plugin-2-4-and-java-11/