How do I start a Spring Boot Web Application without using ComponentScan

Question

I am trying to avoid component scanning to reduce start up time in our module tests, and in our web app in general.

When I replace @SpringBootApplication with @SpringBootConfiguration @EnableAutoConfiguration, I get the following error:

Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean

Can I manually import the EmbeddedServletContainerFactory somehow?

Answer 1

Miloš and Pieter provided the means to find the answer. A minimal Spring Boot Web Application can be started with the following:

@SpringBootConfiguration
@Import({EmbeddedServletContainerAutoConfiguration.class})
public class Application extends SpringBootServletInitializer {
   ...
}

ServerPropertiesAutoConfiguration.class might also be handy to pick up things like port number for the application.