Snippet

Conditional Bean Registration

Using @ConditionalOnProperty allows you to control whether a bean is registered in the Spring context based on application properties, perfect for toggling features or mocks.

snippet.java

java

@Configuration
public class ExternalApiConfig {
    @Bean
    @ConditionalOnProperty(name = "api.mock.enabled", havingValue = "false")
    public ApiService realApiService() {
        return new RealApiServiceImpl();
    }
}

spring

Breakdown

@ConditionalOnProperty(...)

Checks if 'api.mock.enabled' is 'false' in the environment configuration before creating this bean.

public ApiService realApiService()

The bean that will only exist if the condition above is met.

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Conditional Bean Registration

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