Bdtjtk

I've been looking for two days to integrate Apache Jena in a Web Application that uses PrimeFaces (open source framework for JavaServerFaces). The project is built using Apache Maven and deployed locally in "operating mode: standalone" to WildFly 12 application server.

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 

    http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>



    <groupId>it</groupId>

    <artifactId>Test2</artifactId>

    <version>1.0-SNAPSHOT</version>



    <dependencies>

        <!-- Servlet -->

        <dependency>

            <groupId>javax.servlet</groupId>

            <artifactId>javax.servlet-api</artifactId>

            <version>3.1.0</version>

        </dependency>

        <!-- JSF -->

        <dependency>

            <groupId>com.sun.faces</groupId>

            <artifactId>jsf-api</artifactId>

            <version>2.2.15</version>

        </dependency>

        <dependency>

            <groupId>com.sun.faces</groupId>

            <artifactId>jsf-impl</artifactId>

            <version>2.2.15</version>

        </dependency>        

        <!-- PrimeFaces -->

        <dependency>

            <groupId>org.primefaces</groupId>

            <artifactId>primefaces</artifactId>

            <version>6.1</version>

        </dependency>

        <!-- Jena -->

        <dependency>

            <groupId>org.apache.jena</groupId>

            <artifactId>jena-arq</artifactId>

            <version>3.9.0</version>            

        </dependency>

     </dependencies>

     <build>

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <version>3.7.0</version>

                <configuration>

                    <source>1.8</source>

                    <target>1.8</target>

                </configuration>

            </plugin>

        </plugins>

     </build>

</project>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

        xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 

        http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"

        version="4.0">

    <servlet>

        <servlet-name>Faces Servlet</servlet-name>

        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>Faces Servlet</servlet-name>

        <url-pattern>*.faces</url-pattern>

    </servlet-mapping>

</web-app>

I have created an IndexView backing Bean with an init method, annotated with @PostConstruct. Everything works fine without calling Jena API.

On adding to init method this simple line

OntModel model = ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM);

these exception are thrown:

javax.servlet.ServletException

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)

...

Caused by: java.lang.ExceptionInInitializerError

    at org.apache.jena.ontology.OntModelSpec.<clinit>(OntModelSpec.java:49)

    at IndexView.init(IndexView.java:32)

...

Caused by: java.nio.file.InvalidPathException: Illegal char <:> at index 4: file:location-mapping.rdf

...

javax.servlet.ServletException: Could not initialize class org.apache.jena.ontology.OntModelSpec

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:671)

...

Caused by: java.lang.NoClassDefFoundError: Could not initialize class org.apache.jena.ontology.OntModelSpec

at IndexView.init(IndexView.java:32)

• 
  location-mapping.rdf file is included in jena-core dependency (included in jena-arq dependency)


• All dependencies are included in classpath and in the generated war (I can see them under the lib folder in the generated artifact).

I cannot figure out how to make it work.