How to run XJC with Java 11 and maven?

Question

To generate java classes from XSD (for reading XML files), we used jaxb2-maven-plugin and Java8.

For java 11, we get many issues...

What libraries and plugins do work (today), allowing to generate java code from XSD using java 11 and maven? If possible point out different solutions, such as with cxf-xjc-plugin, jaxb2-Maven-Plugin and others.

Answer 1

I've just investigated the same topic. The best way for Java 11 is to use cxf-xjc-plugin. It's a Maven plugin. No other Maven plugin is able to work under Java 11 without annoying workarounds.

I've published a complete example with cxf-xjc-plugin here: https://artofcode.wordpress.com/2019/02/28/generating-classes-from-xsd-under-java-11-the-right-way/

Answer 2

I was able to get Jaxb2-maven-plugin to work with Java 11. By default the generated classes will be created in the generated classes package. My only gripe is that it doesn't implement toString methods. If I ever figure that out i'll update this.

<dependency>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>jaxb2-maven-plugin</artifactId>
    <version>2.5.0</version>
</dependency>

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>jaxb2-maven-plugin</artifactId>
    <version>2.5.0</version>
    <executions>
        <execution>
            <id>xjc-foo</id>
            <goals>
                <goal>xjc</goal>
            </goals>
            <configuration>
                <sourceType>wsdl</sourceType>
                <sources>
                    <!-- if you put path only, it will read any wsdl or xsd file -->
                    <!-- if you have xsd that is imported in wsdl, then make sure you point it wsdl file -->
                    <source>${project.basedir}/src/main/resources/schemas/foo.wsdl</source>
                </sources>
                <clearOutputDir>false</clearOutputDir>
                <packageName>foo</packageName>
            </configuration>
        </execution>
    </executions>
    <dependencies>
        <dependency>
            <groupId>javax.activation</groupId>
            <artifactId>javax.activation.api</artifactId>
            <version>1.2.0</version>
        </dependency>
    </dependencies>
</plugin>