Springboot之类路径扫描

SpringBoot框架中默认提供的扫描类为：ClassPathBeanDefinitionScanner。 webFlux框架中借助RepositoryComponentProvider扫描符合条件的Repository。

public class ClassPathScanningCandidateComponentProvider{private final List<TypeFilter> includeFilters = new ArrayList<>();private final List<TypeFilter> excludeFilters = new ArrayList<>();public Set<BeanDefinition> findCandidateComponents(String basePackage) {//根据类路径扫描候选类return scanCandidateComponents(basePackage);}private Set<BeanDefinition> scanCandidateComponents(String basePackage) {Set<BeanDefinition> candidates = new LinkedHashSet<>();try {String packageSearchPath = "classpath*:" + resolveBasePackage(basePackage) + '/' + this.resourcePattern;Resource[] resources = getResourcePatternResolver().getResources(packageSearchPath);for (Resource resource : resources) {String filename = resource.getFilename();MetadataReader metadataReader = getMetadataReaderFactory().getMetadataReader(resource);if (isCandidateComponent(metadataReader)) {ScannedGenericBeanDefinition sbd = new ScannedGenericBeanDefinition(metadataReader);sbd.setSource(resource);if (isCandidateComponent(sbd)) {//候选类条件判断candidates.add(sbd);}}}}return candidates;}protected boolean isCandidateComponent(MetadataReader metadataReader) throws IOException {for (TypeFilter tf : this.excludeFilters) {if (tf.match(metadataReader, getMetadataReaderFactory())) {return false;}}for (TypeFilter tf : this.includeFilters) {if (tf.match(metadataReader, getMetadataReaderFactory())) {return isConditionMatch(metadataReader);}}return false;}
}

扫描路径提供：includeFilters & excludeFilters。