Anno.java 文件源码

/**
 * Query clazz's methods to getPlugin all annotated spec annotations.
 *
 * @param clazz
 * @param methodCls
 * @return
 */
public static Annotation[] query(final Class<?> clazz,
                                 final Class<? extends Annotation> methodCls) {
    return Fn.get(() -> {
        final Method[] methods = clazz.getDeclaredMethods();
        final List<Method> methodSet = Arrays.asList(methods);
        final List<Method> result = methodSet.stream()
                .filter(item -> item.isAnnotationPresent(methodCls))
                .collect(Collectors.toList());
        final List<Annotation> resultAnnos = new ArrayList<>();
        for (final Method method : result) {
            final Annotation anno = method.getAnnotation(methodCls);
            if (null != anno) {
                resultAnnos.add(anno);
            }
        }
        return resultAnnos.toArray(new Annotation[]{});
    }, clazz, methodCls);
}