1.spring 自帶拷貝工具

LoginUser user = new LoginUser(); // 將data中字段相同的屬性拷貝到user中BeanUtils.copyProperties(data , user);

2. 基于Orika的字節(jié)碼拷貝工具

1) pom

<!-- 基于字節(jié)碼的深拷貝工具類 --><dependency><groupId>ma.glasnost.orika</groupId><artifactId>orika-core</artifactId><version>1.5.4</version></dependency>

2)工具類?OrikaUtils

import ma.glasnost.orika.MapperFacade; import ma.glasnost.orika.impl.DefaultMapperFactory; import ma.glasnost.orika.metadata.TypeFactory;import java.util.Collection; import java.util.List; import java.util.Set;/*** @Description Orika深拷貝工具類* @date 2021/9/30 16:03 */ public class OrikaUtils {private OrikaUtils() {}//單例模式(懶漢式、線程安全）private static class Builder{//通過(guò)工廠和建造者創(chuàng)建MapperFacade實(shí)例private static final MapperFacade mapper = new DefaultMapperFactory.Builder().build().getMapperFacade();}public static MapperFacade getMapper(){return Builder.mapper;}/*** @param srcObj 被拷貝對(duì)象* @param dstClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝** */public static <S, D> D mapBean(S srcObj, Class<D> dstClass) {return getMapper().map(srcObj, dstClass);}/*** @param srcList 映射的Iterable* @param dstClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝對(duì)象list** */public static <S, D> List<D> mapList(Iterable<S> srcList, Class<D> dstClass) {return getMapper().mapAsList(srcList, dstClass);}/*** @param srcList 映射的Iterable* @param srcClass 被拷貝對(duì)象類型* @param dstClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝對(duì)象list** */public static <S, D> List<D> mapList(Iterable<S> srcList, Class<S> srcClass, Class<D> dstClass) {return getMapper().mapAsList(srcList, TypeFactory.valueOf(srcClass), TypeFactory.valueOf(dstClass));}/*** @param srcSet 映射的Iterable* @param srcClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝對(duì)象set** */public static <S , D> Set<D> mapSet(Iterable<S> srcSet , Class<D> srcClass ){return getMapper().mapAsSet(srcSet , srcClass);}/*** @param srcSet 映射的Iterable* @param srcClass 被拷貝對(duì)象類型* @param dstClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝對(duì)象set** */public static <S,D> Set<D> mapSet(Iterable<S> srcSet , Class<S> srcClass , Class<D> dstClass ){return getMapper().mapAsSet(srcSet , TypeFactory.valueOf(srcClass) , TypeFactory.valueOf(dstClass));}/*** @param destination 目標(biāo)對(duì)象數(shù)組* @param source 映射的Iterable* @param destinationClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝數(shù)組對(duì)象** */public static <S, D> D[] mapArray(D[] destination, Iterable<S> source, Class<D> destinationClass){return getMapper().mapAsArray(destination , source , destinationClass);}/*** @param destination 目標(biāo)對(duì)象數(shù)組* @param source 數(shù)組對(duì)象* @param destinationClass 目標(biāo)對(duì)象類型* @return 返回新的目標(biāo)對(duì)象的一個(gè)深拷貝數(shù)組對(duì)象** */public static <S, D> D[] mapArray(D[] destination, S[] source, Class<D> destinationClass){return getMapper().mapAsArray(destination , source , destinationClass);}/*** @param source 映射的Iterable* @param destination Collection及子類（set,queue,list）* @param destinationClass 目標(biāo)對(duì)象類型* @return 對(duì)傳入destination進(jìn)行拷貝賦值** */public static <S, D> void mapCollection(Iterable<S> source, Collection<D> destination, Class<D> destinationClass){getMapper().mapAsCollection(source,destination,destinationClass);}/*** @param source 映射的Iterable* @param destination Collection及子類（set,queue,list）* @param sourceClass 被拷貝的類型* @param destinationClass 目標(biāo)對(duì)象類型* @return 對(duì)傳入destination進(jìn)行拷貝賦值** */public static <S, D> void mapCollection(Iterable<S> source, Collection<D> destination, Class<S> sourceClass, Class<D> destinationClass){getMapper().mapAsCollection(source,destination, TypeFactory.valueOf(sourceClass) , TypeFactory.valueOf(destinationClass));} }

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