I am trying out a really easy declarative OSGi example with Netbeans and the Maven SCR Plugin following this tutorial<http://netbeans.org/kb/docs/javaee/maven-osgi-declarativeservices.html>( http://netbeans.org/kb/docs/javaee/maven-osgi-declarativeservices.html).
Here is my code (Here <http://www.uploadmb.com/dw.php?id=1346326024> is a link for both NetBeans projects): 1.) Netbeans Maven OSGi Bundle Project "MavenHelloService OSGi Bundle" 1.a) Interface HelloService.java in com.joerg.mavenhelloservice.api public interface HelloService { public String sayHello(String name); } 1.b) Installer.java public class Installer implements BundleActivator { @Override public void start(BundleContext context) throws Exception { String userName = context.getProperty("user.name"); System.out.println("User Name: " + userName); } … 1.c) Implematation HelloImpl.java public class Installer implements BundleActivator { @Component(name="hello-service") @Service public class HelloImpl implements HelloService { @Override public String sayHello(String name) { return "Hello " + name; } } 2.) Netbeans Maven OSGi Bundle Project "HelloClient OSGi Bundle" 2.a) Activator.java @Component(name="hello-service-consumer") public class Activator implements BundleActivator { @Reference private HelloService helloService; @Override public void start(BundleContext context) throws Exception { System.out.println(helloService.sayHello("Duke")); } … 3.) The Maven SCR Plugins generates following XML Files in the jars. 3.a) In MavenHelloService-1.0-SNAPSHOT.jar serviceComponents.xml: <?xml version="1.0" encoding="UTF-8"?><components xmlns:scr=" http://www.osgi.org/xmlns/scr/v1.0.0";> <scr:component enabled="true" name="hello-service"> <implementation class="com.joerg.mavenhelloservice.HelloImpl"/> <service servicefactory="false"> <provide interface="com.joerg.mavenhelloservice.api.HelloService"/> </service> <property name="service.pid" value="hello-service"/> </scr:component> </components> 3.b) In HelloClient-1.0-SNAPSHOT.jar serviceComponents.xml: <?xml version="1.0" encoding="UTF-8"?><components xmlns:scr=" http://www.osgi.org/xmlns/scr/v1.0.0";> <scr:component enabled="true" name="hello-service-consumer"> <implementation class="com.joerg.helloclient.Activator"/> <property name="service.pid" value="hello-service-consumer"/> <reference name="helloService" interface="com.joerg.mavenhelloservice.api.HelloService" cardinality="1..1" policy="static" bind="bindHelloService" unbind="unbindHelloService"/> </scr:component> </components> I use following software versions: Netbeans 7.2 on Mac OS X 10.8.1 with Oracle Java 1.7.0_06 (64bit) Maven 4.17.1 (installed with Netbeans) Apache Felix Framework 3.0.7 (as Dependency for Service and Client) Apache Felix Annotations 1.6.0 (as Dependency for Service and Client) Maven SCR Plugin 1.7.4 (added to pom.xml for Service and Client) Apache Felix Framework 4.0.3 (on Terminal as OSGi playground) In Terminal I start felix "java -jar /bin/felix.jar" and install+start bundles: start file:/Volumes/workspace/MavenHelloService/target/MavenHelloService-1.0-SNAPSHOT.jar start file:/Volumes/workspace//HelloClient/target/HelloClient-1.0-SNAPSHOT.jar When starting the HelloClient I get: java.lang.NullPointerException at com.joerg.helloclient.Activator.start(Activator.java:17) at org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:645) at org.apache.felix.framework.Felix.activateBundle(Felix.java:1977) Where Activator.java:17 is: System.out.println(helloService.sayHello("Duke")); Am I missing anything? Or are my scr declarations wrong?
