How can I deploy my Spring Boot Application in Equinox OSGi Container. Getting BundleException: Error loading bundle activator - spring-boot

Question

My Activator class:
package com.package.actprovider;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceListener;
import org.osgi.framework.ServiceRegistration;
import com.package.Application;
import org.osgi.framework.ServiceEvent;
/**
* This class implements a simple bundle that utilizes the OSGi
* framework's event mechanism to listen for service events. Upontting
* receiving a service event, it prints out the event's details.
**/
public class Activator implements BundleActivator , ServiceListener{
private ServiceRegistration registration;
//private Application application;
/**
* Implements BundleActivator.start(). Prints
* a message and adds itself to the bundle context as a service
* listener.
* #param context the framework context for the bundle.
**/
#Override
public void start(BundleContext context)
{
System.out.println("Starting to listen for service events.++++");
context.addServiceListener(this);
}
/**
* Implements BundleActivator.stop(). Prints
* a message and removes itself from the bundle context as a
* service listener.
* #param context the framework context for the bundle.
**/
#Override
public void stop(BundleContext context)
{
context.removeServiceListener(this);
System.out.println("Stopped listening for service events.");
}
/**
* Implements ServiceListener.serviceChanged().
* Prints the details of any service event from the framework.
* #param event the fired service event.
**/
public void serviceChanged(ServiceEvent event)
{
String[] objectClass = (String[])
event.getServiceReference().getProperty("objectClass");
if (event.getType() == ServiceEvent.REGISTERED)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " registered.");
}
else if (event.getType() == ServiceEvent.UNREGISTERING)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " unregistered.");
}
else if (event.getType() == ServiceEvent.MODIFIED)
{
System.out.println(
"Ex1: Service of type " + objectClass[0] + " modified.");
}
}
}
MANIFEST.MF file that is read by the equinox container:
Manifest-Version: 1.0
Bundle-Description: A bundle that displays messages at startup and whe
n service events occur
Bundle-Name: Service listener example
Bundle-Version: 1.0.0
Bundle-Activator: com.package.actprovider.Activator
Bundle-Vendor: Apache Felix
Import-Package: org.osgi.framework
Created-By: 1.8.0_101 (Oracle Corporation)
Here Bundle-Activator: com.package.actprovider.Activator , but the activator.class file creating at /BOOT-INF/classes/package com.package.actprovider.Activator
my pom.xml is as follows
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
<groupId>com.package</groupId>
<artifactId>myfoo</artifactId>
<version>0.1.0</version>
<packaging>bundle</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
<relativePath />
</parent>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<phase>none</phase>
</execution>
</executions>
</plugin>
<!-- tag::plugin[] -->
<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<version>0.4.9</version>
<configuration>
<imageName>${docker.image.prefix}/${project.artifactId}</imageName>
<dockerDirectory>src/main/docker</dockerDirectory>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
<!-- <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId>
<configuration> <archive> <manifestFile>src/main/resources/META-INF/MANIFEST.MF</manifestFile>
</archive> </configuration> </plugin> -->
<plugin>
\
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<extensions>true</extensions>
<configuration>
<archive>
<manifestFile>${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
</dependency>
<dependency>
<groupId>sdp-api-java</groupId>
<artifactId>sdp-api-java</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jersey</artifactId>
</dependency>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.framework</artifactId>
<version>2.0.4</version>
</dependency>
</dependencies>
please suggest how can I add spring-boot bundle inside osgi container

Answer 1

Spring boot and OSGi are mutually exclusive. You can use spring to a degree but even that works badly.
So the best practice is to build OSGi applications based on declarative services or blueprint. You might also take a look at Apache Karaf for support of technologies like JPA, servlets ...
It will be a little more effort than in spring boot but you should be able to solve the same problems.