Question

我是MapStruct API的新手，任何人都可以说如何进行嵌套Mapping。我有两个类，一个是我的实际purchaseOrder类，它是我的目标类，另一个是EDPurchaseOrder类，它被称为源文件，这里不用担心我使用的命名约定，只需要使用源文件和目标文件

来源类
源类EDCustomerOrder及其引用类

    public class EDCustomerOrder{
        private Integer orderID;
        private String orderNumber;
        private BigDecimal orderTotalQty;
        private String UOM;
        private PickupDTO pickupPoints;
        private Integer supplierID;
        private String supplierName;
        private String supplierNature;
        private EDAddress supplierEDAddress;
    }

    public class EDPickup{
        private List<EDPOItem> items;
    }

    public class EDAddress{
        private String addressLine1;
        private String addressLine2;
        private String addressLine3;
        private String city;
        private String state;
        private string countryCode;
        private String country;
        private String postalCode;
    }

    public class EDPOItem{
        private Integer itemID;
        private String itemCode;
        private String itemDescription;
        private Integer itemQuantity;
    }

目标类
这是我的目标类CustomerOrder及其引用类

    public class CustomerOrder{
        private Integer orderID;
        private String orderNumber;
        private List<Pickup> pickupPoints;
        private Supplier supplierDetail;
    }

    public class Pickup{
        private Integer pickupID;
        private Integer pickupLocationNumber;
        private List<POItem> items;
    }

    public class POItem{
        private Integer itemID;
        private String itemCode;
        private String itemDescription;
        private Integer itemQuantity;
    }

    public class Supplier{
        private Integer supplierID;
        private String supplierName;
        private String supplierNature;
        private Address supplierAddress;
    }

    public class Address{
        private String addressLine1;
        private String addressLine2;
        private String addressLine3;
        private String city;
        private String state;
        private string countryCode;
        private String country;
        private String postalCode;
    }

Answer 1

所以我想你在目标方面拥有相同的对象层次结构，例如SongDTO，LibraryDTO和TrackDTO。

然后，你必须为每对相应的对象声明一个映射方法，并根据需要通过@Mapping进行配置：

public interface MyMapper {

    @Mapping(source="name", target="title")
    SongDTO songToDto(Song song);

    LibraryDTO libraryToDto(Library library);

    TrackDTO trackToDto(Track track);
}

然后，例如生成的songToDto()实现将调用libraryToDto()以将歌曲库映射到歌曲DTO的库DTO中。

另请查看reference guide了解详情。

Answer 2

@Mapper(componentModel = "spring",unmappedTargetPolicy = ReportingPolicy.IGNORE)
    public interface CandidateProfessionalEntityAndDTOMapper {
        @Mappings({
            @Mapping(source = "company.companyId", target = "companyId"),
        })
        Clazz1
            entityToReferencesMapping(Clazz2 entity);
    }
    public class Clazz2 {
        private String companyName;
        private Company company;
    }
    public class Company{
        Integer companyId;
    }
    public class Clazz1 {
       private String companyId;
       private String companyName;
    }

Mapstruct中的嵌套映射

2 个答案: