Java Mapstruct可以'；使用ObjectFactory时映射属性

我需要一些社区帮助来指出我的代码哪里错了…：）

在@ObjectFactory的帮助下，我尝试使用mapstruct在两个实体之间映射字段

实体1：

public class ScimUser   {

    @JsonProperty("addresses")
    @Valid
    private List<UserAddress> addresses = null;

}

制图员：

@Mapper(componentModel = "spring", uses = { AddressFactory.class })
public interface ScimUserMapper {

    @Mapping(target = "postalAddress", source = "scimUser.addresses")
    User toUser(ScimUser scimUser);

    @Mapping(target = "addresses", source = "user.postalAddress")
    ScimUser toScimUser(User user);

}

对象工厂：

@Component
public class AddressFactory {

    @Autowired
    private CountryMapper countryMapper;

    @Autowired
    private CountryRepository countryRepository;

    @ObjectFactory
    public PostalAddress toPostalAddress(List<UserAddress> addresses, @TargetType Class<PostalAddress> type) {
        PostalAddress postalAddress = new PostalAddress();
        if (addresses != null && !addresses.isEmpty()) {
            UserAddress userAddress = addresses.stream().filter(UserAddress::isPrimary).findFirst().orElse(null);
            if (userAddress == null) {
                userAddress = addresses.get(0);
            }
            postalAddress.setAddressLine1(userAddress.getStreetAddress());
            postalAddress.setPostCode(userAddress.getPostalCode());
            postalAddress.setState(userAddress.getRegion());
            postalAddress.setCity(userAddress.getLocality());
            CountryJpa countryJpa = countryRepository.getCountryByIso2Code(userAddress.getCountry());
            if (countryJpa != null) {
                Country country = countryMapper.fromJPA(countryJpa);
                postalAddress.setCountry(country);
            }
        }
        return postalAddress;
    }

    @ObjectFactory
    public List<UserAddress> toUserAddressList(PostalAddress address, @TargetType Class<List<UserAddress>> type) {
        UserAddress userAddress = new UserAddress();
        userAddress.setCountry(address.getCountry().getIso2());
        userAddress.setFormatted("?");
        userAddress.setLocality(address.getCity());
        userAddress.setPostalCode(address.getPostCode());
        userAddress.setPrimary(true);
        userAddress.setRegion(address.getState());
        userAddress.setStreetAddress(address.getAddressLine1());
        userAddress.setType("?");

        return Collections.singletonList(userAddress);
    }

}

@组件
公共类地址工厂{
@自动连线
私人CountryMapper CountryMapper；
@自动连线
私有国家知识库国家知识库；
@对象工厂
公共邮政地址（列表地址，@TargetType类类型）{
PostalAddress PostalAddress=新的PostalAddress（）；
if（addresses！=null&&！addresses.isEmpty（））{
UserAddress UserAddress=addresses.stream（）.filter（UserAddress:：isPrimary）.findFirst（）.orElse（null）；
if（userAddress==null）{
userAddress=addresses.get（0）；
}
postalAddress.setAddressLine1（userAddress.getStreetAddress（））；
setPostCode（userAddress.getPostalCode（））；
postalAddress.setState（userAddress.getRegion（））；
setCity（userAddress.getLocation（））；
CountryJpa CountryJpa=countryRepository.getCountryByIso2Code（userAddress.getCountry（））；
如果（countryJpa！=null）{
Country Country=countryMapper.fromJPA（countryJpa）；
邮资。setCountry（国家）；
}
}
退回邮资；
}
@对象工厂
公共列表toUserAddressList（邮寄地址，@TargetType类类型）{
UserAddress UserAddress=新的UserAddress（）；
userAddress.setCountry（address.getCountry（）.getIso2（））；
userAddress.setFormatted（“？”）；
userAddress.setLocality（address.getCity（））；
userAddress.setPostalCode（address.getPostCode（））；
setPrimary（true）；
userAddress.setRegion（address.getState（））；
userAddress.setStreetAddress（address.getAddressLine1（））；
userAddress.setType（“？”）；
返回集合。singletonList（用户地址）；
}
}

上面的代码在源代码生成过程中显示此错误：

无法将属性“java.util.List addresses”映射到“PostalAddress PostalAddress”。考虑声明/实现映射方法：“后地址映射（JavaUTILLIST值）”。 无法将属性“PostalAddress PostalAddress”映射到“java.util.List地址”。考虑声明/实现映射方法：“java. UTILISTMAP（PalpalAdvaldValue）”。 这不是我第一次使用这些对象工厂，我真的不知道我做错了什么

---

因此，如果有人有想法，我很乐意阅读。：）

您使用的

@ObjectFactory

错误。您想要实现的是自定义映射方法

需要使用

@ObjectFactory

来创建目标实例对象。在您的情况下，如果您只是从方法中删除

@ObjectFactory

和

@TargetType

，那么它应该可以正常工作

---

我必须强调的是，你在那里做了相当多的手工制图。您可以轻松地提供在单个

用户地址

和

邮政地址

之间进行映射的方法，只需为集合添加包装器即可。

感谢您的回答，我更了解如何处理这些映射。

@Component
public class AddressFactory {

    @Autowired
    private CountryMapper countryMapper;

    @Autowired
    private CountryRepository countryRepository;

    @ObjectFactory
    public PostalAddress toPostalAddress(List<UserAddress> addresses, @TargetType Class<PostalAddress> type) {
        PostalAddress postalAddress = new PostalAddress();
        if (addresses != null && !addresses.isEmpty()) {
            UserAddress userAddress = addresses.stream().filter(UserAddress::isPrimary).findFirst().orElse(null);
            if (userAddress == null) {
                userAddress = addresses.get(0);
            }
            postalAddress.setAddressLine1(userAddress.getStreetAddress());
            postalAddress.setPostCode(userAddress.getPostalCode());
            postalAddress.setState(userAddress.getRegion());
            postalAddress.setCity(userAddress.getLocality());
            CountryJpa countryJpa = countryRepository.getCountryByIso2Code(userAddress.getCountry());
            if (countryJpa != null) {
                Country country = countryMapper.fromJPA(countryJpa);
                postalAddress.setCountry(country);
            }
        }
        return postalAddress;
    }

    @ObjectFactory
    public List<UserAddress> toUserAddressList(PostalAddress address, @TargetType Class<List<UserAddress>> type) {
        UserAddress userAddress = new UserAddress();
        userAddress.setCountry(address.getCountry().getIso2());
        userAddress.setFormatted("?");
        userAddress.setLocality(address.getCity());
        userAddress.setPostalCode(address.getPostCode());
        userAddress.setPrimary(true);
        userAddress.setRegion(address.getState());
        userAddress.setStreetAddress(address.getAddressLine1());
        userAddress.setType("?");

        return Collections.singletonList(userAddress);
    }

}