CopyUtil

package com.zkml.common.util;


import org.dozer.*;

import java.util.ArrayList;
import java.util.List;

/**
 * @Description :基于dozer的对象拷贝，仅需要属性名完全相同
 * @Author :zhaojun
 * @Time :2019-04-22 17:13
 */
public final class CopyUtil {

    /**
     * 单例 DozerBeanMapper
     */
    private final static Mapper mapper = DozerBeanMapperSingletonWrapper.getInstance();

    /**
     * 2个实例对象之间的拷贝
     *
     * @param fromObject 被拷贝源实例对象
     * @param toObject   拷贝目标实例对象
     */
    public static void copyBean(Object fromObject, Object toObject) {
        if (null == fromObject) {
            return;
        }
        try {
            mapper.map(fromObject, toObject);
        } catch (MappingException e) {
            e.printStackTrace();
        }
    }

    /**
     * 一个类实例对象拷贝成另一个目标类对象
     *
     * @param fromObject 被拷贝源实例对象
     * @param tClass     拷贝目标类对象
     * @return 拷贝目标实例对象
     */
    public static <E> E copyBean(Object fromObject, Class<E> tClass) {
        if (null == fromObject) {
            return null;
        }
        E obj = null;
        try {
            obj = mapper.map(fromObject, tClass);
        } catch (MappingException e) {
            e.printStackTrace();
        }
        return obj;
    }

    /**
     * 一个类实例对象集合拷贝成另一个目标类对象集合
     *
     * @param fromObjectList 被拷贝源实例对象集合
     * @param tClass         拷贝目标类对象
     * @return 拷贝目标实例对象集合
     */
    public static <E> List<E> copyBeanList(List<?> fromObjectList, Class<E> tClass) {
        List<E> resultList = new ArrayList<E>();
        if (null == fromObjectList || fromObjectList.isEmpty()) {
            return resultList;
        }
        for (Object obj : fromObjectList) {
            if (null != obj) {
                resultList.add(copyBean(obj, tClass));
            }
        }
        return resultList;
    }
}