import org.osgi.service.url.URLConstants; //导入依赖的package包/类
private ServiceRegistration registerTomcatJNDIUrlService() {
	Properties properties = new Properties();
	properties.put(URLConstants.URL_HANDLER_PROTOCOL, "jndi");
	final URLStreamHandler handler = new DirContextURLStreamHandler();

	return bundleContext.registerService(URLStreamHandlerService.class.getName(),
		new AbstractURLStreamHandlerService() {

			private final static String EMPTY_STRING = "";


			public URLConnection openConnection(URL u) throws IOException {
				return new URL(u, EMPTY_STRING, handler).openConnection();
			}
		}, properties);
}
 

import org.osgi.service.url.URLConstants; //导入依赖的package包/类
public void start( BundleContext bundleContext ) {
  this.urlTransformer = new UrlTransformer();
  this.urlTransformerRegistration = bundleContext.registerService( ArtifactUrlTransformer.class, this.urlTransformer, null );

  this.urlHandler = new UrlHandler();

  Dictionary<String, String> props = new Hashtable<>();
  props.put( URLConstants.URL_HANDLER_PROTOCOL, WebPackageURLConnection.URL_PROTOCOL );

  this.urlHandlerRegistration = bundleContext.registerService( URLStreamHandlerService.class, this.urlHandler, props );
}
 

import org.osgi.service.url.URLConstants; //导入依赖的package包/类
protected void activate(final ComponentContext context) {
    final Hashtable<String, String> dict = new Hashtable<String, String>();
    dict.put(URLConstants.URL_HANDLER_PROTOCOL, "httppgp");
    context.getBundleContext().registerService(
            URLStreamHandlerService.class.getName(), this, dict);
}