从类中检索所有字段，包括其超类。

/**

 * Copyright (C) 2011  JTalks.org Team

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Lesser General Public

 * License as published by the Free Software Foundation; either

 * version 2.1 of the License, or (at your option) any later version.

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public

 * License along with this library; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

 */

//package com.nowjava;
/* from 时   代    Java - nowjava.com*/

import java.lang.reflect.Field;

import java.lang.reflect.Modifier;

import java.util.ArrayList;


import java.util.List;


public class Main {

    public static void main(String[] argv) throws Exception {

        Class beanClass = String.class;

        System.out.println(getAllFields(beanClass));

    }


    /**

     * Retrieves all fields from the class, including its super classes. <br>

     * 

     * <i>Leaves out all static fields.</i>

     * 

     * @param beanClass class whose fields will be extracted

     * @return list of extracted fields

     */

    public static List<Field> getAllFields(Class<?> beanClass) {
    /**
    来 自 n o w j a v a . c o m - 时  代  Java
    **/

        List<Class<?>> allClasses = getClassHierarchy(beanClass);


        List<Field> fields = new ArrayList<Field>();


        for (Class<?> current : allClasses) {

            for (Field field : current.getDeclaredFields()) {

                if (!Modifier.isStatic(field.getModifiers())) {

                    fields.add(field);

                }

            }

        }


        return fields;

    }


    /**

     * Creates all class hierarchy from the given class to Object,

     * <b>exclusive</b>, i.e. Object won't go to the list). Interfaces won't be

     * listed in the result.

     * 

     * @param beanClass class for building its hierarchy

     * @return list of all classes from the given class up to {@link Object}

     */

    public