Spring 如何通过反射获取controller 包下所有的类,以及类上的注解

直接上代码：

  @Test
    void contextLoads() throws IOException, ClassNotFoundException {

        //spring 工具类可以获取指定路径表的全部类
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        //监听的包如下：
        String basePackage = "com.chen.jwt.controller";
        String resourcePattern = "/**/*.class";
        String pattern = resolver.CLASSPATH_ALL_URL_PREFIX + ClassUtils
                .convertClassNameToResourcePath(basePackage) + resourcePattern;
        //获取包下面指定的类资源
        Resource[] resources = resolver.getResources(pattern);
        //MetadataReader 工厂类
        MetadataReaderFactory factory = new CachingMetadataReaderFactory(resolver);
        for (Resource resource: resources) {
            //用来读取类的信息
            MetadataReader reader = factory.getMetadataReader(resource);
            //扫描到的class
            String className = reader.getClassMetadata().getClassName();
            //获取到类名
            Class<?> clazzName = Class.forName(className);
            System.out.println(clazzName);
            //判断类名上是否有  @UserLoginToken 注解
            UserLoginToken annotation = clazzName.getAnnotation(UserLoginToken.class);
            if (annotation != null) {
                System.out.println("类中的注解："+ annotation.annotationType().getName());
            }
        }