Spring 5.x 和 CDI 2.x 集成选项

Question

Considering Spring's 5.x baseline and CDI's baseline 2.x, what more viable options should I consider to integrate them into a project with JSF 2.3, since JSF 2.3 is coupled with the CDI? Bridges? Custom Bean Factories? Others?

Answer 1

We use bean producers to access Spring objects in CDI. As in the architecture we used there is an interface layer between the UI and the server/business, this integration was facilitated. Integration is performed as follows.

Cdi Factory from the view/ui layer.

public class MainViewClientFactory {

    public MainViewClientFactory() {
    }

    @ApplicationScoped
    @Produces
    public CadastroPaisService cadastroPaisService() {
        return CdiSpringUtils.getSpringBean(CadastroPaisService.class);
    }

}

The CdiSpringUtils Class.

public class CdiSpringUtils {

    private CdiSpringUtils() {
    }

    public static <R, Q extends Annotation> R getSpringBean(Class<R> beanClass) {
        return ApplicationContextProvider.getApplicationContext().getBean(beanClass);
    }

    public static <R, Q extends Annotation> R getSpringBean(Class<R> beanClass, Class<Q> qualifierClass) {
        return ApplicationContextProvider.getQualifiedBeanOfType(beanClass, qualifierClass);
    }

}

The ApplicationContextProvider Class.

public class ApplicationContextProvider implements ApplicationContextAware {

    private static ApplicationContext context;

    public static ApplicationContext getApplicationContext() {
        return context;
    }

    public static <R, Q extends Annotation> R getQualifiedBeanOfType(Class<R> cls, Class<Q> qualifierAnnotationClass) {
        R bean = null;
        Map<String, R> beanMap = getApplicationContext().getBeansOfType(cls);
        for (Map.Entry<String, R> entry : beanMap.entrySet()) {
            Q targetAnnotation = getApplicationContext().findAnnotationOnBean(entry.getKey(), qualifierAnnotationClass);
            if (targetAnnotation != null) {
                bean = entry.getValue();
                break;
            }
        }
        return bean;
    }

    @Override
    public void setApplicationContext(ApplicationContext ctx) {
        context = ctx;
    }
}