这是一个方法,该方法返回带有特定注释的方法:
public static List<Method> getMethodsAnnotatedWith(final Class<?> type, final Class<? extends Annotation> annotation) { final List<Method> methods = new ArrayList<Method>(); Class<?> klass = type; while (klass != Object.class) { // need to iterated thought hierarchy in order to retrieve methods from above the current instance // iterate though the list of methods declared in the class represented by klass variable, and add those annotated with the specified annotation for (final Method method : klass.getDeclaredMethods()) { if (method.isAnnotationPresent(annotation)) { Annotation annotInstance = method.getAnnotation(annotation); // TODO process annotInstance methods.add(method); } } // move to the upper class in the hierarchy in search for more methods klass = klass.getSuperclass(); } return methods;}可以轻松修改它以满足您的特定需求。请注意,提供的方法会遍历类层次结构,以查找带有所需批注的方法。
这是满足您特定需求的方法:
public static List<Method> getMethodsAnnotatedWithMethodXY(final Class<?> type) { final List<Method> methods = new ArrayList<Method>(); Class<?> klass = type; while (klass != Object.class) { // need to iterated thought hierarchy in order to retrieve methods from above the current instance // iterate though the list of methods declared in the class represented by klass variable, and add those annotated with the specified annotation for (final Method method : klass.getDeclaredMethods()) { if (method.isAnnotationPresent(MethodXY.class)) { MethodXY annotInstance = method.getAnnotation(MethodXY.class); if (annotInstance.x() == 3 && annotInstance.y() == 2) { methods.add(method); } } } // move to the upper class in the hierarchy in search for more methods klass = klass.getSuperclass(); } return methods;}要调用找到的方法,请参考教程。这里的潜在困难之一是方法参数的数量,这些参数在找到的方法之间可能会有所不同,因此需要进行一些额外的处理。



