对象复制工具Orika，快速实现两个java对象的属性赋值

一、maven依赖引入orika

		<dependency><groupId>ma.glasnost.orika</groupId><artifactId>orika-core</artifactId><version>1.5.4</version></dependency>

在这里插入图片描述

二、Orika工具类


import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import ma.glasnost.orika.MapperFactory;
import ma.glasnost.orika.impl.DefaultMapperFactory;
import ma.glasnost.orika.metadata.TypeFactory;
import java.util.List;public class BeanMapperUtil {/*** Mapper factory*/private static final MapperFactory NOT_NULL_MAPPER_FACTORY = new DefaultMapperFactory.Builder().mapNulls(false).build();private BeanMapperUtil() {}/*** Map object** @param source           source* @param destinationClass targetClass* @return object or null*/public static <S, D> D map(S source, Class<D> destinationClass) {return NOT_NULL_MAPPER_FACTORY.getMapperFacade().map(source, destinationClass);}/*** Map list** @param sourceList       sourceList* @param sourceClass      sourceClass* @param destinationClass destinationClass* @return List*/public static <S, D> List<D> mapList(Iterable<S> sourceList, Class<S> sourceClass, Class<D> destinationClass) {return NOT_NULL_MAPPER_FACTORY.getMapperFacade().mapAsList(sourceList, TypeFactory.valueOf(sourceClass), TypeFactory.valueOf(destinationClass));}
}

三、使用示例

准备工作，定义两个对象：

    @AllArgsConstructor@NoArgsConstructor@Datapublic static class User {private String name;private Integer age;}@ApiModel@AllArgsConstructor@NoArgsConstructor@Datapublic static class UserDTO {@ApiModelProperty("姓名")private String name;@ApiModelProperty("年龄")private Integer age;}

1、单个对象之间

User user = new User("张三", 18);
//user对象:BeanMapperUtil.User(name=张三, age=18)
System.out.println("user对象:" + user);UserDTO userDTO = BeanMapperUtil.map(user, UserDTO.class);
//userDTO对象:BeanMapperUtil.UserDTO(name=张三, age=18)
System.out.println("userDTO对象:" + userDTO);

2、对象集合之间

        List<User> userList  = Lists.newArrayList();userList.add(new User("张三", 10));userList.add(new User("李四", 12));// userList对象:[BeanMapperUtil.User(name=张三, age=10), BeanMapperUtil.User(name=李四, age=12)]System.out.println("userList对象:" + userList);List<UserDTO> userDTOList = BeanMapperUtil.mapList(userList, User.class, UserDTO.class);//userDTOList对象:[BeanMapperUtil.UserDTO(name=张三, age=10), BeanMapperUtil.UserDTO(name=李四, age=12)]System.out.println("userDTOList对象:" + userDTOList);