OSGi Web示例工程

package com.osgicn.demo.webentry; import javax.servlet.Servlet; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceEvent; import org.osgi.framework.ServiceListener; import org.osgi.framework.ServiceReference; import org.osgi.service.http.HttpService; import com.osgicn.demo.webentry.servlet.WeatherServlet; public class Activator implements BundleActivator, ServiceListener { private BundleContext bundleContext; private ServiceReference ref; private Servlet servlet; public void start(BundleContext context) throws Exception { bundleContext = context; servlet = new WeatherServlet(bundleContext); registerServlet(); context.addServiceListener(this, "(objectClass=" + HttpService.class.getName() + ")"); } public void stop(BundleContext context) throws Exception { try { unregisterServlet(); } catch (Throwable t) { t.printStackTrace(); } servlet = null; bundleContext = null; ref = null; } public void serviceChanged(ServiceEvent event) { switch (event.getType()){ case ServiceEvent.REGISTERED: registerServlet(); break; case ServiceEvent.UNREGISTERING: unregisterServlet(); break; } } private void registerServlet(){ if (ref == null){ ref = bundleContext.getServiceReference(HttpService.class.getName()); } if (ref != null){ try { HttpService http = (HttpService) bundleContext.getService(ref); if(null != http){ http.registerServlet("/osgicn/index", servlet, null, null); http.registerResources("/osgicn/page","page",null); System.out.println("Html页面已经注册，可以访问了！"); } } catch (Exception e) { e.printStackTrace(); } } } /* * 卸载Web应用 */ private void unregisterServlet(){ if (ref != null) { try { HttpService http = (HttpService) bundleContext.getService(ref); if(null != http){ http.unregister("/osgicn/index"); http.unregister("/osgicn/page"); } } catch(Exception e){ e.printStackTrace(); } } } }