How to register listener in Spring without deployment descriptor

Question

I'm slowly stepping in Java world through Spring Framework (4.1.0) and need your help with Listeners.

I have created application without deployment descriptor, all Spring related configuration is managed in @Configuration annotated classes. Everything is working but I can't find a way to register listeners.

Question: How I can register listeners in Spring (4.1.0) based on Java @Configuration annotated classed ?

Answer 1

You do that with the help of the WebApplicationInitializer class. @Configuration is for Spring configurations, not for the deployment descriptor.

public class MyWebAppInitializer implements WebApplicationInitializer {
    @Override
    public void onStartup(ServletContext container) {
        container.addListener(...);
        ...
    }
}

You can find more explanations here: How to use Spring's WebApplicationInitializer.