3.17 Micronaut Beans And Spring

The MicronautBeanProcessor class is a BeanFactoryPostProcessor which will add Micronaut beans to a Spring Application Context. An instance of MicronautBeanProcessor should be added to the Spring Application Context. MicronautBeanProcessor requires a constructor parameter which represents a list of the types of Micronaut beans which should be added to the Spring Application Context. The processor may be used in any Spring application. As an example, a Grails 3 application could take advantage of MicronautBeanProcessor to add all of the Micronaut HTTP Client beans to the Spring Application Context with something like the folowing:

// grails-app/conf/spring/resources.groovy
import io.micronaut.spring.beans.MicronautBeanProcessor
import io.micronaut.http.client.annotation.Client
beans = {
    httpClientBeanProcessor MicronautBeanProcessor, Client
}

Multiple types may be specified:

// grails-app/conf/spring/resources.groovy
import io.micronaut.spring.beans.MicronautBeanProcessor
import io.micronaut.http.client.annotation.Client
import com.sample.Widget
beans = {
    httpClientBeanProcessor MicronautBeanProcessor, [Client, Widget]
}

In a non-Grails application something similar may be specified using any of Spring’s bean definition styles:

@Configuration
class ByAnnotationTypeConfig {
    @Bean
    MicronautBeanProcessor beanProcessor() {
        new MicronautBeanProcessor(Prototype, Singleton)
    }
}