java - Spring Boot redirect HTTP to HTTPS

Question

For Spring Boot based application I have configurared ssl properties at application.properties, see my configuration here:

server.port=8443
server.ssl.key-alias=tomcat
server.ssl.key-password=123456
server.ssl.key-store=classpath:key.p12
server.ssl.key-store-provider=SunJSSE
server.ssl.key-store-type=pkcs12

And I have added conection at Application.class, like

@Bean
public EmbeddedServletContainerFactory tomcatEmbeddedServletContainerFactory() {
    final TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
    factory.addAdditionalTomcatConnectors(this.createConnection());
    return factory;
}

private Connector createConnection() {
    final String protocol = "org.apache.coyote.http11.Http11NioProtocol";
    final Connector connector = new Connector(protocol);

    connector.setScheme("http");
    connector.setPort(9090);
    connector.setRedirectPort(8443);
    return connector;
}

But when I try the following by

http://127.0.0.1:9090/

redirect to

https://127.0.0.1:8443/

is not performed. Who faced a similar problem?

question from:https://stackoverflow.com/questions/26655875/spring-boot-redirect-http-to-https

Answer 1

For Tomcat to perform a redirect, you need to configure it with one or more security constraints. You can do this by post-processing the Context using a TomcatEmbeddedServletContainerFactory subclass.

For example:

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);
    }
};

Due to CONFIDENTIAL and /*, this will cause Tomcat to redirect every request to HTTPS. You can configure multiple patterns and multiple constraints if you need more control over what is and is not redirected.