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

Another Spring boot 2.x solution:

private static final int HTTP_PORT = 80;
private static final int HTTPS_PORT = 443;
private static final String HTTP = "http";
private static final String USER_CONSTRAINT = "CONFIDENTIAL";

@Bean
public ServletWebServerFactory servletContainer() {
    TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory() {
        @Override
        protected void postProcessContext(Context context) {
            SecurityConstraint securityConstraint = new SecurityConstraint();
            securityConstraint.setUserConstraint(USER_CONSTRAINT);
            SecurityCollection collection = new SecurityCollection();
            collection.addPattern("/*");
            securityConstraint.addCollection(collection);
            context.addConstraint(securityConstraint);
        }
    };
    tomcat.addAdditionalTomcatConnectors(redirectConnector());
    return tomcat;
}

private Connector redirectConnector() {
    Connector connector = new Connector(
            TomcatServletWebServerFactory.DEFAULT_PROTOCOL);
    connector.setScheme(HTTP);
    connector.setPort(HTTP_PORT);
    connector.setSecure(false);
    connector.setRedirectPort(HTTPS_PORT);
    return connector;
}

And set in your properties server.port=443