Java当中常常会遇到对象的复制或者列表对象的复制，准备了一份工具类供大家参考：

import org.springframework.beans.BeanUtils;
import org.springframework.util.CollectionUtils;import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;/*** 复制工具类*/
public class CopyUtil {/*** 单体复制** @param source 源* @param clazz  clazz* @return {@link T}*/public static <T> T copy(Object source, Class<T> clazz) {if (source == null) {return null;}T obj;try {obj = clazz.getDeclaredConstructor().newInstance();} catch (Exception e) {return null;}BeanUtils.copyProperties(source, obj);return obj;}/*** 列表复制** @param source 源* @param clazz  clazz* @return {@link List}<{@link T}>*/public static <T> List<T> copyList(List<?> source, Class<T> clazz) {if (CollectionUtils.isEmpty(source)) {return new ArrayList<>();}return source.stream().map(c -> copy(c, clazz)).collect(Collectors.toList());}
}