带有@MappingTarget的Mapstruct不调用lombok Builder build（）

Question

@Mapper(
        nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS,
        nullValuePropertyMappingStrategy = NullValuePropertyMappingStrategy.IGNORE

)
public interface CartMapper {
    CartMapper INSTANCE = Mappers.getMapper(CartMapper.class);

    Cart cartRequestToCart(CartRequest cartRequest);

    Cart patch(CartRequest cartRequest, @MappingTarget Cart cart);
}

@Builder
@AllArgsConstructor(access = AccessLevel.PACKAGE)
@Getter
@Setter
@FieldDefaults(level = AccessLevel.PRIVATE)
public class Cart {

    Customer customer;
    Owner owner;
    Integer price;
    String voucher;
}

@Data
@FieldDefaults(level = AccessLevel.PRIVATE)
public class CartRequest {
    CustomerRequest customer;
    OwnerRequest owner;
    Integer price;
    String voucher;
}

    @Override
    public Cart cartRequestToCart(CartRequest cartRequest) {
        if ( cartRequest == null ) {
            return null;
        }

        CartBuilder cart = Cart.builder();

        if ( cartRequest.getCustomer() != null ) {
            cart.customer( customerRequestToCustomer( cartRequest.getCustomer() ) );
        }
        if ( cartRequest.getOwner() != null ) {
            cart.owner( ownerRequestToOwner( cartRequest.getOwner() ) );
        }
        if ( cartRequest.getPrice() != null ) {
            cart.price( cartRequest.getPrice() );
        }
        if ( cartRequest.getVoucher() != null ) {
            cart.voucher( cartRequest.getVoucher() );
        }

        return cart.build();
    }

For方法patch是在此处生成的，在某些设置器中缺少build()调用

    @Override
    public Cart patch(CartRequest cartRequest, Cart cart) {
        if ( cartRequest == null ) {
            return null;
        }

        if ( cartRequest.getCustomer() != null ) {
            if ( cart.getCustomer() == null ) {
                cart.setCustomer( Customer.builder() ); // HERE build() missing
            }
            customerRequestToCustomer1( cartRequest.getCustomer(), cart.getCustomer() );
        }
        if ( cartRequest.getOwner() != null ) {
            if ( cart.getOwner() == null ) {
                cart.setOwner( Owner.builder() ); // HERE build() missing
            }
            ownerRequestToOwner1( cartRequest.getOwner(), cart.getOwner() );
        }
        if ( cartRequest.getPrice() != null ) {
            cart.setPrice( cartRequest.getPrice() );
        }
        if ( cartRequest.getVoucher() != null ) {
            cart.setVoucher( cartRequest.getVoucher() );
        }

        return cart;
    }

一些小贴士如何解决这个问题？多谢.

Answer 1

Lombok 1.18.16的更新。

启动maven-compiler-plugin的此版本工作配置是

<plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
        <annotationProcessorPaths>
            <path>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok-mapstruct-binding</artifactId>
                <version>0.2.0</version>
            </path>
            <path>
                <groupId>org.mapstruct</groupId>
                <artifactId>mapstruct-processor</artifactId>
                <version>1.4.1.Final</version>
            </path>
            <path>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.18.16</version>
            </path>
        </annotationProcessorPaths>
    </configuration>
</plugin>

path节的顺序很重要！