Hi,
I would like to use Vaadin 12 with Jetty embedded within an OSGi bundle. I have added all Vaadin jars to the bundle classpath. The servlet is added to an embedded Jetty server under my control. I know about the tutorial on Vaadin 12 and Jetty [1]
. However, I don’t want to touch the WebAppContext / ServletContext.
I am using the following servlet to serve the static content dynamically from the jars. It also finds the routes. However, it does not serve the “/VAADIN/static/client/client-D1AD34905AC1AA5B4DBECA8FB0306D92.cache.js”. How is this resource generated and served?
public class MyServlet extends VaadinServlet {
private static final String URI_PREFIX = "/frontend/bower_components";
private static final String RESOURCE_PREFIX = "/META-INF/resources/webjars";
private static final Pattern RESOURCE_REGEX = Pattern.compile(URI_PREFIX + "(/.*)");
@Override
protected void servletInitialized() throws ServletException {
try {
RouteRegistry.class.cast(this.getServletContext().getAttribute(RouteRegistry.class.getName())).setNavigationTargets(this.findNavigationTargets());
} catch(ClassCastException | NullPointerException e) {
throw new ServletException("Invalid RouteRegistry!", e);
} catch(InvalidRouteConfigurationException e) {
throw new ServletException(e);
}
super.servletInitialized();
}
@Override
public boolean serveStaticOrWebJarRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Matcher matcher = RESOURCE_REGEX.matcher(request.getRequestURI());
if(matcher.find()) {
IOUtils.copy(MyServlet.class.getClassLoader().getResource(RESOURCE_PREFIX + matcher.group(1)).openStream(), response.getOutputStream());
response.setStatus(HttpServletResponse.SC_OK);
} else {
return super.serveStaticOrWebJarRequest(request, response);
}
return true;
}
@SuppressWarnings("unchecked")
private Set<Class<? extends Component>> findNavigationTargets() {
Set<Class<? extends Component>> result = new HashSet<Class<? extends Component>>();
for(Class<?> clazz : new ClassGraph().enableAnnotationInfo().scan().getClassesWithAnnotation(Route.class.getName()).loadClasses()) {
result.add((Class<? extends Component>) clazz);
}
return result;
}
}
[1]
https://vaadin.com/docs/v12/flow/production/tutorial-jetty.html
Thanks in advance!
Martin
