如何一起使用mapstruct和springboot bean？@自动连线

Question

@Mapper(componentModel = "spring")
public interface DemoConvert {
    public static DemoConvert INSTANCE = mappers.getMapper(DemoConvert.class);

    @AutoWired
    private PersonInfoSearchService personInfoSearchService;

    @Mapping(source = "name", target = "name")
    @Mapping(source = "id", target = "gender", expression = "java(personInfoSearchService.searchGenderById(id))")
    PersonDTO toPerson(TeacherDTO teacherDTO);
}

如何一起使用mapstruct和springboot bean？@自动连线

Answer 1

您需要将接口更改为抽象类并将PersonInfoSearchService调用移至@Named方法：

@Mapper(componentModel = "spring")
public abstract class DemoConvert {

    @Autowired
    private PersonInfoSearchService personInfoSearchService;

    
    @Mapping(source = "name", target = "name")
    @Mapping(source = "id", target = "gender", qualifiedByName = "mapGenderFromId")
    public abstract PersonDTO toPerson(TeacherDTO teacherDTO);


    @Named("mapGenderFromId")
    String mapGenderFromId(Long id) { // return type of gender, I took String. For id took Long
        return personInfoSearchService.searchGenderById(id);
    }
}

此外，您不需要声明INSTANCE变量，因为您正在使用componentModel = "spring". 您可以简单地将映射器自动连接到其他 spring bean 中。