Spring osgi service exported and imported by Blueprint. Basically if you want to share spring services with blueprint, this is the work around which worked from me.

blueprint.xml

<?xml version="1.0" encoding="UTF-8"?>
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:camel="http://camel.apache.org/schema/blueprint"
       xsi:schemaLocation="
       http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd
       http://camel.apache.org/schema/blueprint http://camel.apache.org/schema/blueprint/camel-blueprint.xsd">
  <reference id="helloBean" interface="com.osgi.HelloWorldInterface"/>
  <bean id="sageMasterStockService" class="com.osgi.blueprint.impl.HelloWorldService">
	<property name="helloBean" ref="helloBean"/>
  </bean>
  <camelContext id="blueprintContext" trace="false" xmlns="http://camel.apache.org/schema/blueprint">
    <route id="timerToLog">
      <from uri="timer:foo?period=5000"/>
      <bean  method="hello" ref="helloBean" />
      <log message="The message contains ${body}"/>
      <to uri="mock:result"/>
    </route>
  </camelContext>
</blueprint>

features.xml

<features>
	<feature name="jpa-hibernate" version="${project.version}">
		 <bundle>mvn:org.apache.servicemix.specs/org.apache.servicemix.specs.java-persistence-api-1.1.1/2.0.0.redhat-60024</bundle>
		 <bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.commons-collections/3.2.1_1</bundle>
		 <bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.commons-pool/1.5.4_2</bundle>
		 <bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.commons-dbcp/1.4_3</bundle>
		 <!-- <bundle>mvn:org.springframework/spring-jdbc/3.1.3.RELEASE</bundle> -->
		 <bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.dom4j/1.6.1_2</bundle>
		 <bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.antlr/2.7.7_5</bundle>
		 <bundle>mvn:org.objectweb.asm/com.springsource.org.objectweb.asm/1.5.3</bundle>
		 <bundle>mvn:net.sourceforge.cglib/com.springsource.net.sf.cglib/2.2.0</bundle>
		 <bundle>mvn:org.jboss.javassist/com.springsource.javassist/3.9.0.GA</bundle>
		 <bundle>mvn:org.hibernate/com.springsource.org.hibernate.annotations.common/3.3.0.ga</bundle>
		 <bundle>mvn:org.hibernate/com.springsource.org.hibernate.annotations/3.4.0.GA</bundle>
		 <bundle>mvn:org.hibernate/com.springsource.org.hibernate.ejb/3.4.0.GA</bundle>
		 <bundle>mvn:org.hibernate/com.springsource.org.hibernate/3.3.2.GA</bundle>
		 <!-- <bundle>mvn:org.springframework/spring-orm/3.1.3.RELEASE</bundle> -->
	</feature>
	<feature name="spring-dependencies" version="3.1.3.RELEASE">
	     <bundle>mvn:org.springframework/spring-orm/3.1.3.RELEASE</bundle>
	     <bundle>mvn:org.springframework/spring-oxm/3.1.3.RELEASE</bundle>
	     <bundle>mvn:org.springframework/spring-tx/3.1.3.RELEASE</bundle>
	     <bundle>mvn:org.springframework/spring-jdbc/3.1.3.RELEASE</bundle>
	</feature>
	<feature name="mysql-connector-java" version="5.1.24">
	    <bundle>mvn:mysql/mysql-connector-java/5.1.24</bundle>
	</feature>
	<feature name="jpa-dependencies" version="${project.version}">
	    	<bundle>mvn:org.apache.openjpa/openjpa/2.2.1</bundle>
	    	<bundle>mvn:org.apache.geronimo.specs/geronimo-jta_1.1_spec/1.1.1</bundle>
		<bundle>mvn:org.apache.geronimo.specs/geronimo-jpa_2.0_spec/1.1</bundle>
		<bundle>mvn:org.apache.aries/org.apache.aries.util/1.0.1.redhat-60024</bundle>
		<bundle>mvn:org.apache.aries.jpa/org.apache.aries.jpa.api/1.0.1.redhat-60024</bundle>
		<bundle>mvn:org.apache.aries.jpa/org.apache.aries.jpa.blueprint.aries/1.0.1.redhat-60024</bundle>
		<bundle>mvn:org.apache.aries.jpa/org.apache.aries.jpa.container/1.0.1.redhat-60024</bundle>
		<bundle>mvn:org.apache.aries.jpa/org.apache.aries.jpa.container.context/1.0.1.redhat-60024</bundle>
		<bundle>mvn:org.apache.servicemix.bundles/org.apache.servicemix.bundles.serp/1.14.1_1</bundle>
	</feature>
	<feature name="joda-time" version="2.2">
	    <bundle>mvn:joda-time/joda-time/2.2</bundle>
	</feature>
   	<feature name="esb-database-dependencies" version="${project.version}">
   	    <feature version="${project.version}">jpa-dependencies</feature>
   	    <feature version="${project.version}">jpa-hibernate</feature>
   	    <feature version="3.1.3.RELEASE">spring-dependencies</feature>
   	    <feature version="5.1.24">mysql-connector-java</feature>
   	    <feature version="2.2">joda-time</feature>
	</feature>
	<feature name="esb-database" version="${project.version}">
		<bundle>mvn:${project.groupId}/fuse-database/${project.version}</bundle>
	</feature>
</features>

pom.xml

<!-- to generate the MANIFEST-FILE of the bundle -->
<plugin>
	<groupId>org.apache.felix</groupId>
	<artifactId>maven-bundle-plugin</artifactId>
	<version>2.3.7</version>
	<extensions>true</extensions>
	<configuration>
		<instructions>
			<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
			<Private-Package>com.osgi.*</Private-Package>
			<Export-Package>com.osgi.*</Export-Package>
			<DynamicImport-Package>*</DynamicImport-Package>
			<Import-Package>
				org.springframework*;version="[2.5,4.0)",
				javax.persistence*;version="[1.1.0,2.1.0)",
				javax.persistence.criteria;version="[1.1.0,2.1.0)",
				javax.sql,
				*
			</Import-Package>
			<Export-Service>com.osgi.HelloWorldInterface</Export-Service>
		</instructions>
	</configuration>
</plugin>

spring-osgi-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:osgix="http://www.springframework.org/schema/osgi-compendium"
	xmlns:camel="http://camel.apache.org/schema/spring" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:osgi="http://www.springframework.org/schema/osgi" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/osgi http://www.springframework.org/schema/osgi/spring-osgi.xsd
		http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
		http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
		http://www.springframework.org/schema/osgi-compendium
        http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium.xsd">
	<context:annotation-config />
	<context:component-scan base-package="com.osgi" />
	
	<tx:annotation-driven transaction-manager="txManager" />
	
	
	<!-- Property place holder will be referred by properties exposed by blueprint -->
	<context:property-placeholder properties-ref="databaseProperties" />
	
	<!-- enables interpretation of the @PersistenceUnit/@PersistenceContext 
		annotations providing convenient access to EntityManagerFactory/EntityManager -->
	<bean
		class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

	<bean id="entityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="persistenceUnitName" value="reportIncident" />
		<property name="jpaVendorAdapter" ref="jpaAdapterMYSQL" />
		<property name="dataSource" ref="dataSource" />
	</bean>


	<!-- OpenJPA MySQL adapter -->
	<bean id="jpaAdapterMYSQL" class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
		<property name="databasePlatform" value="org.apache.openjpa.jdbc.sql.MySQLDictionary" />
		<property name="showSql" value="true" />
	</bean>


	<!-- DataSource MYSQL -->
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="${driver.class.name}" />
		<property name="url" value="${url}" />
		<property name="username" value="${username}" />
		<property name="password" value="${password}" />
	</bean>

	<!-- TransactionManager is required -->
	<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory" />
		<property name="dataSource" ref="dataSource" />
	</bean>
	
	<!-- Exporting interface as osgi service, which will registered at Service Registry-->
	<osgi:service ref="helloWorld" interface="com.osgi.HelloWorldInterface" />

	<!-- Expose Transaction Manager -->
	<osgi:service ref="txManager" interface="org.springframework.transaction.PlatformTransactionManager">
		<osgi:service-properties>
			<entry key="tx" value="JPA" />
		</osgi:service-properties>
	</osgi:service>

	<!-- Exposed the blueprint properties, which will be referenced by spring property place holder -->
	<osgix:cm-properties id="databaseProperties" persistent-id="com.osgi.database" >
		<prop key="driver.class.name">com.mysql.jdbc.Driver</prop>
		<prop key="url">jdbc:mysql://localhost:3306/flickr</prop>
		<prop key="username">root</prop>
		<prop key="password">welcome1</prop>
	</osgix:cm-properties>
</beans>