Spring boot ResourceLoader获取指定package目录下所有的类和方法

利用Spring  boot ResourceLoader可以获取指定package目录下所有的类和方法，其中关键的两个点是ResourcePatternResolver和CachingMetadataReaderFactory

具体实现方法：

@Autowired
private ResourceLoader resourceLoader;
	
@Override
public void run(String... args) throws Exception {
		ResourcePatternResolver resolver = ResourcePatternUtils.getResourcePatternResolver(resourceLoader);
		MetadataReaderFactory metaReader = new CachingMetadataReaderFactory(resourceLoader);
		Resource[] resources = resolver.getResources("classpath*:com/cxm/controller/**/*.class");

		for (Resource resource : resources) {
			MetadataReader reader = metaReader.getMetadataReader(resource);
			String className = reader.getClassMetadata().getClassName();
			Class<?> cla = Loader.loadClass(className);
			Method[] ms = cla.getMethods();
			for (Method m : ms) {
				RequestMapping aa = m.getAnnotation(RequestMapping.class);
				PostMapping bb = m.getAnnotation(PostMapping.class);
				if (aa != null || bb != null) {
					System.out.println(m);
				}
			}
		}
	}