Hi, I forgot to add my pom content. Here it is:
---- <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/maven-v4_0_0.xsd";> <modelVersion>4.0.0</modelVersion> <groupId>com.mycompany.app</groupId> <artifactId>my-app</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <name>my-app</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.apache.jena</groupId> <artifactId>apache-jena-libs</artifactId> <version>3.1.1</version> <type>pom</type> </dependency> <dependency> <groupId>org.apache.logging.log4j</groupId> <artifactId>log4j-core</artifactId> <version>2.7</version> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-assembly-plugin</artifactId> <configuration> <archive> <manifest> <mainClass>com.mycompany.app.RdfWriter</mainClass> </manifest> </archive> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> </configuration> </plugin> </plugins> </build> </project> ---- I added org.apache.logging.log4j because another error message complaining about not finding it. Thank you On Sun, Feb 5, 2017 at 6:03 PM, Karim Mont <[email protected]> wrote: > Hi, > > I opted for the third solution. But I still need your help. > > Here is the error I am getting when I execute my final jar: > > java -jar target/my-app-1.0-SNAPSHOT-jar-with-dependencies.jar > SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". > SLF4J: Defaulting to no-operation (NOP) logger implementation > SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further > details. > Exception in thread "main" java.lang.ExceptionInInitializerError > at com.mycompany.app.RdfWriter.main(RdfWriter.java:13) > Caused by: java.lang.NullPointerException > at org.apache.jena.tdb.sys.EnvTDB.processGlobalSystemProperties( > EnvTDB.java:33) > at org.apache.jena.tdb.TDB.init(TDB.java:248) > at org.apache.jena.tdb.sys.InitTDB.start(InitTDB.java:29) > at org.apache.jena.system.JenaSystem.lambda$init$2(JenaSystem.java:119) > at java.util.ArrayList.forEach(ArrayList.java:1249) > at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:194) > at org.apache.jena.system.JenaSystem.forEach(JenaSystem.java:171) > at org.apache.jena.system.JenaSystem.init(JenaSystem.java:117) > at org.apache.jena.rdf.model.ModelFactory.<clinit>(ModelFactory.java:49) > ... 1 more > > I am using maven-assembly-plugin to include all dependencies in the final > jar. > > Before running the jar I used these 2 commans (successfully) after > removing everything from my .m2 folder: > > mvn clean install > mvn clean compile assembly:single > > And then I run this command that gives me the error above: > > java -jar target/my-app-1.0-SNAPSHOT-jar-with-dependencies.jar > > > Thank you > > > > > On Sun, Jan 29, 2017 at 4:46 AM, Lorenz B. <[email protected] > leipzig.de> wrote: > >> That doesn't work because only your own classes are in the classpath then. >> >> Options: >> >> 1) Add all necessary JAR files from the Jena distribution to the classpath >> 2) Use the Maven exec plugin from the command line >> 3) build a fat JAR that also contains the classes of the Maven >> dependencies >> > Hi, >> > >> > I am trying to do the first example of the jena rdf tutorial. >> > It seems that the class is not found even the maven build was >> successful. >> > >> > Here is my class code: >> > >> > package com.mycompany.app; >> > >> > import org.apache.jena.rdf.model.*; >> > import org.apache.jena.vocabulary.*; >> > >> > public class RdfWriter { >> > static String personURI = "http://somewhere/JohnSmith";; >> > static String fullName = "John Smith"; >> > >> > public static void main(String[] args) { >> > // // create an empty model >> > Model model = ModelFactory.createDefaultModel(); >> > // // create the resource >> > // Resource johnSmith = model.createResource(personURI); >> > // // add the property >> > // johnSmith.addProperty(VCARD.FN, fullName); >> > System.out.println("this is rdf writer"); >> > } >> > >> > } >> > >> > I am running it like this: >> > >> > java -cp target/my-app-1.0-SNAPSHOT.jar com.mycompany.app.RdfWriter >> > >> > And here is my pom file: >> > >> > <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/maven-v4_0_0.xsd";> >> > <modelVersion>4.0.0</modelVersion> >> > <groupId>com.mycompany.app</groupId> >> > <artifactId>my-app</artifactId> >> > <packaging>jar</packaging> >> > <version>1.0-SNAPSHOT</version> >> > <name>my-app</name> >> > <url>http://maven.apache.org</url> >> > >> > <properties> >> > <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> >> > </properties> >> > >> > <dependencies> >> > <dependency> >> > <groupId>junit</groupId> >> > <artifactId>junit</artifactId> >> > <version>3.8.1</version> >> > <scope>test</scope> >> > </dependency> >> > <dependency> >> > <groupId>org.apache.jena</groupId> >> > <artifactId>apache-jena-libs</artifactId> >> > <version>3.1.1</version> >> > <type>pom</type> >> > </dependency> >> > </dependencies> >> > </project> >> > >> > Here is the full error that I get: >> > Exception in thread "main" java.lang.NoClassDefFoundError: >> > org/apache/jena/rdf/model/ModelFactory >> > at com.mycompany.app.RdfWriter.main(RdfWriter.java:13) >> > Caused by: java.lang.ClassNotFoundException: >> > org.apache.jena.rdf.model.ModelFactory >> > at java.net.URLClassLoader.findClass(URLClassLoader.java:381) >> > at java.lang.ClassLoader.loadClass(ClassLoader.java:424) >> > at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) >> > at java.lang.ClassLoader.loadClass(ClassLoader.java:357) >> > ... 1 more >> > >> -- >> Lorenz Bühmann >> AKSW group, University of Leipzig >> Group: http://aksw.org - semantic web research center >> >> >
