Also, you can configure the port programmatically.
For Spring Boot 2.x.x:
@Configuration
public class CustomContainer implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {
public void customize(ConfigurableServletWebServerFactory factory){
factory.setPort(8042);
}
}
For older versions:
@Configuration
public class ServletConfig {
@Bean
public EmbeddedServletContainerCustomizer containerCustomizer() {
return (container -> {
container.setPort(8012);
});
}
}