How set up Spring Boot to run HTTPS / HTTP ports

Question

Spring boot have some properties to config web port and SSL settings, but once a SSL certificate is set the http port turns into https port.

So, how can I keep both

Answer 1

The top answers are all great and probably work but I've been using Undertow with JHipster so they didn't work for me (and this was the main search result). The right code for Undertow is mentioned in this issue specifically:

@Bean
public UndertowServletWebServerFactory embeddedServletContainerFactory() {
    UndertowServletWebServerFactory factory = new UndertowServletWebServerFactory();
    factory.addBuilderCustomizers(new UndertowBuilderCustomizer() {
        @Override
        public void customize(Undertow.Builder builder) {
            builder.addHttpListener(8080, "0.0.0.0");
        }
    });
    return factory;
}