在Spring ApplicationContext加载之后，有没有办法扫描所有的@Component

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.AnnotationTypeFilter;
import org.springframework.core.type.filter.TypeFilter;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.util.ClassUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@Component
public class ComponentScanner implements ApplicationContextAware {

    private ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
    }

    public List<String> scanComponents() throws IOException {
        List<String> componentNames = new ArrayList<>();

        ResourcePatternResolver resourcePatternResolver = new PathMatchingResourcePatternResolver();
        String packageSearchPath = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +
                resolveBasePackage(applicationContext) + '/' + "**/*.class";
        Resource[] resources = resourcePatternResolver.getResources(packageSearchPath);

        MetadataReaderFactory metadataReaderFactory = applicationContext.getBean(MetadataReaderFactory.class);
        for (Resource resource : resources) {
            if (resource.isReadable()) {
                MetadataReader metadataReader = metadataReaderFactory.getMetadataReader(resource);
                String className = metadataReader.getClassMetadata().getClassName();
                componentNames.add(className);
            }
        }

        return componentNames;
    }

    private String resolveBasePackage(ApplicationContext applicationContext) {
        String[] basePackages = applicationContext.getEnvironment().getProperty("scan.base.package").split(",");
        return basePackages[0].replace('.', '/');
    }
}