당신은 폴더의 유틸리티 클래스를 만들 수 있습니다
:
public class ObjectMapperUtils {
private static ModelMapper modelMapper = new ModelMapper();
/**
* Model mapper property setting are specified in the following block.
* Default property matching strategy is set to Strict see {@link MatchingStrategies}
* Custom mappings are added using {@link ModelMapper#addMappings(PropertyMap)}
*/
static {
modelMapper = new ModelMapper();
modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
}
/**
* Hide from public usage.
*/
private ObjectMapperUtils() {
}
/**
* <p>Note: outClass object must have default constructor with no arguments</p>
*
* @param <D> type of result object.
* @param <T> type of source object to map from.
* @param entity entity that needs to be mapped.
* @param outClass class of result object.
* @return new object of <code>outClass</code> type.
*/
public static <D, T> D map(final T entity, Class<D> outClass) {
return modelMapper.map(entity, outClass);
}
/**
* <p>Note: outClass object must have default constructor with no arguments</p>
*
* @param entityList list of entities that needs to be mapped
* @param outCLass class of result list element
* @param <D> type of objects in result list
* @param <T> type of entity in <code>entityList</code>
* @return list of mapped object with <code><D></code> type.
*/
public static <D, T> List<D> mapAll(final Collection<T> entityList, Class<D> outCLass) {
return entityList.stream()
.map(entity -> map(entity, outCLass))
.collect(Collectors.toList());
}
/**
* Maps {@code source} to {@code destination}.
*
* @param source object to map from
* @param destination object to map to
*/
public static <S, D> D map(final S source, D destination) {
modelMapper.map(source, destination);
return destination;
}
}
을 그리고 당신의 필요를 위해 그것을 사용 : 코드의 I에
List<PostDTO> listOfPostDTO = ObjectMapperUtils.mapAll(listOfPosts, PostDTO.class);
을 바탕으로 비슷한 것을 썼지 만 나를 이해하기 쉽다. 그리고 대부분의 수입과 "광산". 나는'Java'에서'Generics'를 처음 접했습니다. 당신의 도움을 주셔서 대단히 감사합니다. – Gromo
@ 그로 모, 천만에요. –