Spring Boot redirect HTTP to HTTPS

ghz 1years ago ⋅ 546 views

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?

Answer

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.

An instance of the above TomcatEmbeddedServletContainerFactory subclass should be defined as a bean using a @Bean method in a @Configuration class.

#spring-boot