java.util.NoSuchElementException while starting an OSGi framework programatically -
i trying programatically start osgi framework (preferably equinox) java , load bundles.
so going through article says how that. getting java.util.nosuchelementexception everytime @ below line everytime
serviceloader.load(frameworkfactory.class).iterator().next(); below code-
import java.io.file; import java.util.hashmap; import java.util.linkedhashmap; import java.util.map; import java.util.serviceloader; import java.util.logging.logger; import org.osgi.framework.bundle; import org.osgi.framework.bundlecontext; import org.osgi.framework.bundleexception; import org.osgi.framework.frameworkutil; import org.osgi.framework.launch.framework; import org.osgi.framework.launch.frameworkfactory; public app() { try { frameworkfactory frameworkfactory = serviceloader.load(frameworkfactory.class).iterator().next(); map<string, string> config = new hashmap<string, string>(); //todo: add config properties framework framework = frameworkfactory.newframework(config); framework.start(); //... other code } } i not sure wrong doing here? having maven based project. below pom.xml file project-
<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"> <parent> <groupid>com.host.stream</groupid> <artifactid>stream-parent</artifactid> <version>2.0.0-snapshot</version> <relativepath>../build/superpom</relativepath> </parent> <modelversion>4.0.0</modelversion> <groupid>com.host.domain.eye</groupid> <artifactid>eye</artifactid> <packaging>jar</packaging> <name>eye</name> <build> <plugins> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-eclipse-plugin</artifactid> <configuration> <downloadsources>true</downloadsources> <downloadjavadocs>false</downloadjavadocs> </configuration> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-jar-plugin</artifactid> <configuration> <!-- configuration of archiver --> <archive> <!-- manifest specific configuration --> <manifest> <!-- classpath added manifest of created jar file. --> <addclasspath>true</addclasspath> <!-- configures classpath prefix. configuration option used specify needed libraries found under lib/ directory. --> <classpathprefix>lib/</classpathprefix> <!-- specifies main class of application --> <mainclass>com.host.personalization.eye.app</mainclass> </manifest> </archive> <includes> <include>**/*.xml</include> <include>**/*.class</include> </includes> <finalname>${project.artifactid}</finalname> </configuration> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-resources-plugin</artifactid> <executions> <execution> <phase>prepare-package</phase> <goals> <goal>copy-resources</goal> </goals> </execution> </executions> <configuration> <outputdirectory>target/config/streamconf</outputdirectory> <resources> <resource> <directory>buildsrc/streamconf</directory> <includes> <include>**</include> </includes> </resource> </resources> </configuration> </plugin> <plugin> <groupid>com.google.code.maven-replacer-plugin</groupid> <artifactid>maven-replacer-plugin</artifactid> <executions> <execution> <phase>prepare-package</phase> <goals> <goal>replace</goal> </goals> </execution> </executions> <configuration> <file>target/config/streamconf/eyewiring.xml</file> <regex>false</regex> <replacements> <replacement> <token>dynamic_build_label_place_holder</token> <value>${project.artifactid}-${project.version}-${buildnumber}</value> </replacement> </replacements> </configuration> </plugin> <plugin> <artifactid>maven-assembly-plugin</artifactid> <executions> <execution> <phase>package</phase> <id>assembly</id> <goals> <goal>single</goal> </goals> <configuration> <descriptors> <descriptor>assembly.xml</descriptor> </descriptors> <finalname>${project.artifactid}-${project.version}-${buildnumber}</finalname> </configuration> </execution> </executions> </plugin> <plugin> <groupid>org.apache.felix</groupid> <artifactid>maven-bundle-plugin</artifactid> <extensions>true</extensions> <executions> <execution> <id>generate-resources</id> <goals> <goal>manifest</goal> </goals> <configuration> <manifestlocation>buildsrc/streamconf/meta-inf</manifestlocation> <instructions> <bundle-name>${project.name}</bundle-name> <bundle-symbolicname>com.host.domain.eye</bundle-symbolicname> <import-package>*, pics, links, javax.el;version="[2.0,3.0)";resolution:=optional, javax.inject;version="[1.0.0,2.0.0)", javax.servlet;version="[2.5,4.0)", javax.servlet.annotation;version="[3.0.0,4.0.0)", javax.servlet.http;version="[2.5,4.0)", javax.servlet.jsp;version="[2.0,3.0)", javax.servlet.jsp.el;version="[2.0,3.0)", org.aopalliance.aop;version="[1.0.0,2.0.0)", org.eclipse.virgo.web.dm;version="[2.1.0.release,3.0)", org.springframework.aop;version="[3.0.5.release,4.0)", org.springframework.aop.framework;version="[3.0.5.release,4.0)", org.springframework.aop.scope;version="[3.0.5.release,4.0)", org.springframework.beans;version="3.0.5.release", org.springframework.beans.annotation;version="[3.0.5.release,4.0)", org.springframework.beans.factory;version="[3.0.5.release,4.0)", org.springframework.beans.factory.annotation;version="[3.0.5.release,4.0)", org.springframework.beans.factory.config;version="[3.0.5.release,4.0)", org.springframework.context;version="[3.0.5.release,4.0)", org.springframework.context.annotation;version="[3.0.5.release,4.0)", org.springframework.context.config;version="[3.0.5.release,4.0)", org.springframework.stereotype;version="[3.0.5.release,4.0)", org.springframework.util;version="[3.0.5.release,4.0)", org.springframework.web.bind.annotation;version="[3.0.5.release,4.0)", org.springframework.web.context;version="[3.0.5.release,4.0)", org.springframework.web.context.request;version="[3.0.5.release,4.0)", org.springframework.web.context.support;version="[3.0.5.release,4.0)", org.springframework.web.servlet;version="[3.0.5.release,4.0)", org.springframework.web.servlet.config;version="[3.0.5.release,4.0)", org.springframework.web.servlet.view;version="[3.0.5.release,4.0)",</import-package> </instructions> </configuration> </execution> </executions> </plugin> </plugins> </build> <dependencies> <dependency> <groupid>com.host.stream</groupid> <artifactid>streamframework</artifactid> <version>2.0.0-snapshot</version> </dependency> <dependency> <groupid>com.host.external</groupid> <artifactid>ucirrus-db</artifactid> <version>0.7.3</version> </dependency> <dependency> <groupid>com.host.stream</groupid> <artifactid>streamcore</artifactid> <version>2.0.0-snapshot</version> </dependency> <dependency> <groupid>org.osgi</groupid> <artifactid>org.osgi.core</artifactid> <version>4.3.0</version> </dependency> <dependency> <groupid>org.springframework.osgi</groupid> <artifactid>spring-osgi-core</artifactid> <version>1.2.1</version> </dependency> <dependency> <groupid>org.springframework.osgi</groupid> <artifactid>spring-osgi-extender</artifactid> <version>1.2.1</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-context</artifactid> <version>3.2.3.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-aop</artifactid> <version>3.2.3.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-beans</artifactid> <version>3.2.3.release</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-core</artifactid> <version>3.2.3.release</version> </dependency> <dependency> <groupid>org.springframework.osgi</groupid> <artifactid>spring-osgi-io</artifactid> <version>1.2.1</version> </dependency> <dependency> <groupid>org.apache.felix</groupid> <artifactid>org.osgi.core</artifactid> <version>1.4.0</version> </dependency> </dependencies> </project>
service loader searches classpath interface have asked -- in case frameworkfactory. fix need put osgi framework implementation on classpath.
for example if choose felix, make sure org.apache.felix.framework-<version>.jar present on classpath when launch application.
