reflect.TestCopy.java Source code

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Here is the source code for reflect.TestCopy.java

Source

/*
 * Copyright (C) 2014 BIGITLIliyuanguo <BIGITLI@foxmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package reflect;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import org.apache.commons.beanutils.BeanUtils;

/**
 * ??
 * 
 * @author: liyuanguo
 * @mailto: BIGITLI@foxmail.com
 * @date: 2014108
 * @blog : http://BIGITLI.github.io/
 */
public class TestCopy {

    public static void main(String[] args)
            throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        //??
        User user = new User(6, "");
        //??
        UserCopy copy = new UserCopy();
        //????????
        //copy1(user,copy);
        //copy2(user,copy);
        BeanUtils.copyProperties(copy, user);
        System.out.println(user);
        System.out.println(copy);

    }

    private static void copy2(Object src, Object dest)
            throws IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        Class srcClass = src.getClass();
        Class destClass = dest.getClass();
        Method[] srcMs = srcClass.getDeclaredMethods();
        for (Method srcM : srcMs) {
            //??
            String methodName = srcM.getName();
            if (methodName.startsWith("get")) {
                //srcsrcM?
                Object value = srcM.invoke(src, new Object[] {});
                //methodName.substring(3)??
                String destSetName = "set" + methodName.substring(3);
                try {
                    //destClass?getMethod ?? ???
                    //? ?????value?
                    Method destMethod = destClass.getMethod(destSetName, new Class[] { value.getClass() });
                    //?? dest value?
                    destMethod.invoke(dest, new Object[] { value });
                } catch (NoSuchMethodException e) {
                    e.printStackTrace();
                } catch (SecurityException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    //n?n??
    private static void copy1(User user, UserCopy copy) {
        //
        copy.setId(user.getId());
        copy.setName(user.getName());
    }

}