集册 Java实例教程 获取带注释的字段

获取带注释的字段

欢马劈雪     最近更新时间:2020-01-02 10:19:05

417
获取带注释的字段

/*

 * Copyright 2012 Denis Neuling 

 * 

 * 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. 

 */

import java.lang.annotation.Annotation;/** 时 代 J a v a 提供 **/

import java.lang.reflect.Field;

import java.util.LinkedList;

import java.util.List;


public class Main{


    /**

     * <p>

     * getAnnotatedFields.

     * </p>

     *

     * @param clazz

     *            a {@link java.lang.Class} object.

     * @param annotationClass

     *            a {@link java.lang.Class} object.

     * @param <T>

     *            a T object.

     * @return a {@link java.util.List} object.

     */

    public static <T> List<Field> getAnnotatedFields(Class<?> clazz,

            Class<? extends Annotation> annotationClass) {

        List<Field> annotatedFields = new LinkedList<Field>();

        Field[] allFields = getAllDeclaredFields(clazz);

        for (Field field : allFields) {

            if (null != (field.getAnnotation(annotationClass))) {
            /**
             from
            * n o w j a v a . c o m - 时  代  Java 
            **/

                annotatedFields.add(field);

            }

        }

        return annotatedFields;

    }

    /**

     * <p>

     * getAllDeclaredFields.

     * </p>

     *

     * @param clazz

     *            a {@link java.lang.Class} object.

     * @return an array of {@link java.lang.reflect.Field} objects.

     */

    public static Field[] getAllDeclaredFields(Class<?> claz
展开阅读全文