[SpringBoot] Http에서 Https로 리다이렉트 설정

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

private Connector createHttpConnector() {
	Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
	connector.setScheme("http");
	connector.setSecure(false);
	connector.setPort(8081);
	connector.setRedirectPort(443);
	return connector;
}