Java转换工具类如下：
import java.util.ArrayList; import java.util.List; import org.dozer.DozerBeanMapper; import org.dozer.Mapper; public class DtoEntityUtil { static Mapper mapper = new DozerBeanMapper(); public static <D,E> E trans(D t,Class<E> clazz){ if(t == null) return null; return mapper.map(t, clazz); } public static <D,E> List<E> trans(D[] ts,Class<E> clazz){ List<E> es = new ArrayList<E>(); if(ts == null) return es; for(D d:ts) { E e = (E)trans(d,clazz); if(e != null) es.add(e); } return es; } public static <D,E> List<E> trans(List<D> ts,Class<E> clazz){ List<E> es = new ArrayList<E>(); if(ts == null ) return es; for(D d:ts) { E e = (E)trans(d,clazz); if(e != null) es.add(e); } return es; } }
参考案例：
//下面两段代码是将entity转换成dto;分别是单个对象转换和集合对象转换；一般用于向consumer提供数据
//WorkeRecord是entity，从数据库中获取的对象
DtoEntityUtil.trans(workeRecord, WorkerRecordDTO.class);
//es是List集合，里面的对象是WorkeRecord的实例
List<WorkerRecordDTO> ds = (List<WorkerRecordDTO>)DtoEntityUtil.trans(es, WorkerRecordDTO.class);
//================华丽分隔符==================
//下面例子是dto转entity，一般用于向provider传入对象
DtoEntityUtil.trans(menuDto, Menu.class);//将mentDto转换成mentEntity List<User> users = DtoEntityUtil.trans(ts, User.class);//将dto集合ts转换成entityList users
原文：https://www.cnblogs.com/30go/p/12153477.html