OSGI注册资源的两种方式

来源：互联网发布：非典怎么消失的知乎编辑：程序博客网时间：2024/04/29 10:32

1.通过类

package sample.http;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.http.HttpService;
import org.osgi.util.tracker.ServiceTracker;

public class Activator implements BundleActivator {

   private ServiceTracker httpServiceTracker;

   public void start(BundleContext context) throws Exception {
       httpServiceTracker = new HttpServiceTracker(context);
       httpServiceTracker.open();
   }

   public void stop(BundleContext context) throws Exception {
       httpServiceTracker.close();
       httpServiceTracker = null;
   }

   private class HttpServiceTracker extends ServiceTracker {

       public HttpServiceTracker(BundleContext context) {
           super(context, HttpService.class.getName(), null);
       }

       public Object addingService(ServiceReference reference) {
           HttpService httpService = (HttpService) context.getService(reference);
           try {
               httpService.registerResources("/helloworld.html", "/helloworld.html", null); //$NON-NLS-1$ //$NON-NLS-2$
               httpService.registerServlet("/helloworld", new HelloWorldServlet(), null, null); //$NON-NLS-1$
           } catch (Exception e) {
               e.printStackTrace();
           }
           return httpService;
       }

       public void removedService(ServiceReference reference, Object service) {
           HttpService httpService = (HttpService) service;
           httpService.unregister("/helloworld.html"); //$NON-NLS-1$
           httpService.unregister("/helloworld"); //$NON-NLS-1$
           super.removedService(reference, service);
       }
   }
}

2.通过创建plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.0"?>
<plugin>
     <extension-point id="servlets" name="HttpService servlets" schema="schema/servlets.exsd"/>
     <extension-point id="resources" name="HttpService resources" schema="schema/resources.exsd"/>
     <extension-point id="httpcontexts" name="HttpService httpcontexts" schema="schema/httpcontexts.exsd"/>
     <extension
           id="helloServlet"
           point="org.eclipse.equinox.http.registry.servlets">
        <servlet
              alias="/ext/helloworld"
              class="sample.http.registry.HelloWorldServlet">
           <init-param
                 name="servlet-name"
                 value="Test Servlet">
           </init-param>
           <init-param
                 name="testParam"
                 value="test param value">
           </init-param>
        </servlet>
     </extension>
     <extension
           id="helloResource"
           point="org.eclipse.equinox.http.registry.resources">
        <resource
              alias="/ext/helloworld.html"
              base-name="/helloworld.html"
              />
     </extension>
</plugin>