com.ifengxue.http.util.AnnotationUtil Maven / Gradle / Ivy

/*
 * Copyright 2019 https://www.ifengxue.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.ifengxue.http.util;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

public enum AnnotationUtil {
  ;

  public static  A findAnnotation(Method method, Class clazz) {
    A annotation = method.getAnnotation(clazz);
    if (annotation != null) {
      return annotation;
    }
    Class declaredClass = method.getDeclaringClass();
    while (declaredClass != null) {
      annotation = declaredClass.getAnnotation(clazz);
      if (annotation != null) {
        return annotation;
      }
      declaredClass = declaredClass.getSuperclass();
      if (declaredClass == Object.class) {
        break;
      }
    }
    return null;
  }
}