在Eciplse运行环境中，需要包含jSLP-OSGi这个Bundle。该Bundle提供 ch.ethz.iks.slp包。如果没有运行该Bundle，

那么就无法找到服务。

与P2P查找服务方式不同的是，在注册服务和查找服务。

注册服务的代码实例：

package radlab.r_osgi.slp.server;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
import java.util.Hashtable;
//import org.osgi.framework.*;

import ch.ethz.iks.r_osgi.*;
import radlab.r_osgi.slp.service.ServiceSLP;

import ch.ethz.iks.slp.*;

public class Activator implements BundleActivator {

 /*
  * (non-Javadoc)
  * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
  */
 
 private ServiceRegistration registration;
 public void start(BundleContext context) throws Exception {
  Hashtable<Object,Object> properties = new Hashtable<Object,Object>();
  // this is the hint for R-OSGi that the service
  // ought to be made available for remote access
  properties.put(RemoteOSGiService.R_OSGi_REGISTRATION,Boolean.TRUE);
  
  registration=context.registerService(ServiceSLP.class.getName(),new ServiceImpl(), properties);
  
  ServiceReference advRef = context.getServiceReference(Advertiser.class.getName());
  Advertiser advertiser=(Advertiser) context.getService(advRef);
  advertiser.register(new ServiceURL("service:osgi:r-osgi://localhost:9278", 20), null);
  System.out.println("I am server bundle, I provide a service which will print a message in your console.");
  
 }

 /*
  * (non-Javadoc)
  * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
  */
 public void stop(BundleContext context) throws Exception {
  
  registration.unregister();
 }

}

获取服务的代码实例如下：

package radlab.r_osgi.slp.client;

import java.util.Vector;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleException;
import org.osgi.framework.ServiceReference;
import ch.ethz.iks.r_osgi.*;
import radlab.r_osgi.slp.service.ServiceSLP;

import ch.ethz.iks.slp.*;

public class Activator implements BundleActivator {
 
 Vector<String> serviceLocation=new Vector<String>();
 RemoteOSGiService remote;
 RemoteServiceReference[] srefs;

 /*
  * (non-Javadoc)
  * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
  */
 public void start(BundleContext context) throws Exception {
  
  System.out.println("I am client bundle");
  final ServiceReference sref = context.getServiceReference(RemoteOSGiService.class.getName());
  if (sref == null) {
   throw new BundleException("No R-OSGi found");
  }
  ServiceReference locRef = context.getServiceReference(Locator.class.getName());
 
   if (locRef != null) {
             System.out.println("Scanning Services...");
             Locator locator = (Locator) context.getService(locRef);
             ServiceLocationEnumeration slenum = locator.findServices(new ServiceType("service:osgi"), null, null);
             System.out.println("Result:");
             while (slenum.hasMoreElements()) {
              ServiceURL foundService = (ServiceURL) slenum.nextElement();
              String url=foundService.toString();
              System.out.println(url);
              String address=url.replaceFirst("service:osgi:", "");
              serviceLocation.add(address);
             }
         }
  remote = (RemoteOSGiService) context.getService(sref);
  
  for(int i=0;i<serviceLocation.size();i++){
  srefs =
   remote.getRemoteServiceReferences(new URI(serviceLocation.elementAt(i).toString()),
     ServiceSLP.class.getName(), null);
     if(srefs==null){
   continue;
  }else{
  break;
  }
  }
  
  if(srefs==null){
   System.out.println("No services found.");System.exit(0);
  }
  
     System.out.println("Have a try...");
  
     ServiceSLP serviceSLP = (ServiceSLP) remote.getRemoteService(srefs[0]);
     System.out.println(serviceSLP.getMessage());
  
  
 }

 /*
  * (non-Javadoc)
  * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
  */
 public void stop(BundleContext context) throws Exception {
 }

}