CODEWITHSUNDEEP
javaspringspring-boot
Faraz
Faraz

Reputation: 6285

What is the difference between @SpringBootConfiguration vs @Configuration?

What is the difference between @SpringBootConfiguration and @Configuration? I cannot find much details on it.

Upvotes: 27

Views: 13045

Answers (4)

Vidhya Ambethkar
Vidhya Ambethkar

Reputation: 1

https://docs.spring.io/spring-boot/reference/testing/spring-boot-applications.html#testing.spring-boot-applications.detecting-configuration

@SpringBootConfiguration is mainly for unit test and integration test to automatically find configuration without having you to use @ContextConfiguration and nested configuration class

Upvotes: 0

Romil Patel
Romil Patel

Reputation: 13807

As per Springboot docs (hierarchy below), @Configuration is a part of @SpringBootConfiguration which ultimately has @SpringBootApplication annotation.

@SpringBootApplication
-------> @SpringBootConfiguration
       -------> @Configuration

@SpringBootApplication

Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
@SpringBootConfiguration
@EnableAutoConfiguration
@ComponentScan(excludeFilters = {
        @Filter(type = FilterType.CUSTOM, classes = TypeExcludeFilter.class),
        @Filter(type = FilterType.CUSTOM,
                classes = AutoConfigurationExcludeFilter.class) })
public @interface SpringBootApplication {
...}

@SpringBootConfiguration

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Configuration
public @interface SpringBootConfiguration {

}

@Configuration

    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    @Documented
    @Component
    public @interface Configuration {
}

Upvotes: 17

Saikat
Saikat

Reputation: 16930

As per the Spring documentation, @SpringBootConfiguration is just an alternative to the Spring standard @Configuration annotation. The only difference between the two is that the @SpringBootConfiguration allows the configuration to be found automatically.

This is specifically useful when writing tests.

https://www.javacodegeeks.com/2019/09/springbootconfiguration-annotation-spring-boot.html

Upvotes: 3

Jonathan JOhx
Jonathan JOhx

Reputation: 5978

SpringBootConfiguration

Indicates that a class provides Spring Boot application @Configuration. Can be used as an alternative to the Spring's standard @Configuration annotation so that configuration can be found automatically (for example in tests). Application should only ever include one @SpringBootConfiguration and most idiomatic Spring Boot applications will inherit it from @SpringBootApplication.

Source

Documentation on SpringBootConfiguration

Upvotes: 5

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