Changing FavIcon in Vaadin using pure Java alongside Springboot

Question

I want to change the favicon of the website in Vaadin that is combined with Springboot. I have also opted to go the pure Java route within Vaadin (no html page).

I followed this guide, which explains that the icon I wish to use should be added in the src/main/webapp/icons folder where it will be automatically picked up, resized, etc.

I tried that to no avail, after which I found this thread and subsequently this one. The latter link especially explains that Spring-boot has its own directories and that the webapp folder should be avoided. I tried using the spring directories, but again to no avail.

My resources folder currently looks as such:

My MainView as such:

@Route
@PageTitle("My new title")
public class MainView extends VerticalLayout {

And my SpringBootApplication class as such:

@SpringBootApplication
public class MyVaadinApplication extends SpringBootServletInitializer {
    public static void main(String[] args) {
        SpringApplication.run(MyVaadinApplication.class, args);
    }
}

The icon still remains the default spring leaf:

Where am I going wrong in trying to set the favicon?

Answer 1

Add icon.png to resources/META-INF/resources/icons/icon.png

Then:

• If you are use progressive web app (@PWA annotation) it should already work
• If you are use simple vaadin application you should to implements PageConfiguration and add link to your favicon.

@Route("favicon")
public class FaviconTest extends Div implements PageConfigurator {
    @Override
    public void configurePage(InitialPageSettings settings) {
        HashMap<String, String> attributes = new HashMap<>();
        attributes.put("rel", "shortcut icon");
        attributes.put("type", "image/png");
        settings.addLink("icons/icon.png", attributes);
    }
}