class PersonDTO { String name; String street; String city;}class Person { String name; Address address;}class Address { String street; String city;}@Mapper(componentModel = "spring")interface Mapper { Person fromPersonDTO(PersonDTO dto);}我嘗試使用 2String來Address但它拋出不明確的屬性異常.我應(yīng)該在映射器中添加什么到 mapstreet和cityof PersonDTOto Address？更新：@Mapper(componentModel = "spring")interface Mapper { @Mapping(source = "street", target = "address.street") @Mapping(source = "city", target = "address.city") Person fromPersonDTO(PersonDTO dto);}上面的映射器可以處理直接映射。但是如果我想在創(chuàng)建Address對(duì)象時(shí)添加一些業(yè)務(wù)邏輯，例如：address.street = street.replaceAll(" ", "_"); address.city = cityDao.findByName(city).getId();有沒有辦法達(dá)到這樣的要求？
1 回答
喵喔喔
TA貢獻(xiàn)1735條經(jīng)驗(yàn) 獲得超5個(gè)贊
@Mapper(componentModel = "spring")
interface Mapper {
@Mappings({
@Mapping(source = "street", target = "address.street"),
@Mapping(source = "city", target = "address.city")
})
Person fromPersonDTO(PersonDTO dto);
}
屬性name應(yīng)該自動(dòng)映射，只要它具有相同的名稱和嵌套級(jí)別
更新：
@Mapper(componentModel = "spring")
public abstract class Mapper {
@Autowired
private CityDAO cityDao;
@Mappings({
@Mapping(source = "street", target = "address.street"),
@Mapping(source = "city", target = "address.city")
})
Person fromPersonDTO(PersonDTO dto);
@AfterMapping
void after(@MappingTarget Person person) {
Address address = person.getAddress();
if (address != null) {
// additional null-checks might be required
address.setStreet(address.getStreet().replaceAll(" ", "_"));
address.setCity(cityDao.findByName(address.getCity()).getId();
}
}
}
請(qǐng)注意，為了使用自動(dòng)裝配的 bean，映射器必須是一個(gè)類，而不是一個(gè)接口
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