Spring Boot Annotations

Quick reference for the annotations I reach for when setting up a Spring Boot app. The Spring Boot reference documentation covers the rest.

Annotations

@SpringBootApplication: marks the main class of the application. A combination of three other annotations: @Configuration, @EnableAutoConfiguration, and @ComponentScan.
@Configuration: marks a class as a configuration class, which contains the bean definitions for the application context.
@EnableAutoConfiguration: tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings.
@ComponentScan: enables component scanning, letting Spring scan packages to find and configure beans.
@RestController: marks a class as a controller where every method returns a domain object instead of a view. Shorthand for @Controller plus @ResponseBody.
@RequestMapping: maps web requests onto specific handler classes and/or handler methods.
@RequestParam: binds a web request parameter to a method parameter.