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主页 / 问题 / 1156047
Accepted
Artur Vartanyan
Artur Vartanyan
Asked:2020-07-22 21:55:00 +0000 UTC2020-07-22 21:55:00 +0000 UTC 2020-07-22 21:55:00 +0000 UTC

@mapstruct。源参数中不存在名为“packaging”的属性

  • 772

我正在写MVC Rest一个应用程序。我使用Spring和Hibernate。我决定DTO通过Mapstruct. 似乎我按照说明做了所有事情,但抛出了错误。有什么问题,看不懂。论坛和谷歌上的信息很少。

PS 在这种情况下我不使用Ломбок。Getter 和 Setter 是手动编写的。

喝:

@Entity
@Table(name = "drink", schema = "public")
public class Drink {

    public Drink() { // Constructor for Hibernate

    }


    // Fields
    //
    private @Id
    @GeneratedValue
    Long id;

    @Column(name = "name")
    private String name;

    @Column(name = "price")
    private float price;

    @Column(name = "about")
    private String about;

    @Column(name = "is_deleted")
    private boolean isDeleted;

    // Relationships
    //
    @ManyToOne
    @JoinColumn(name = "packaging_id")
    private Packaging packaging;

    @ManyToOne
    @JoinColumn(name = "manufacturer_id")
    private Manufacturer manufacturer;

    @ManyToOne
    @JoinColumn(name = "country_id")
    private Countries countries;
}

DrinkDTO:

public class DrinkDTO {

    // Fields
    //
    private String drinkName;

    private float drinkPrice;

    private String drinkAbout;

    private Packaging drinkPackaging;

    private Manufacturer drinkManufacturer;

    private Countries drinkCountries;


    // Getters and Setters
    //
    public String getDrinkName() {
        return drinkName;
    }

    public void setDrinkName(String drinkName) {
        this.drinkName = drinkName;
    }

    public float getDrinkPrice() {
        return drinkPrice;
    }

    public void setDrinkPrice(float drinkPrice) {
        this.drinkPrice = drinkPrice;
    }

    public String getDrinkAbout() {
        return drinkAbout;
    }

    public void setDrinkAbout(String drinkAbout) {
        this.drinkAbout = drinkAbout;
    }

    public Packaging getDrinkPackaging() {
        return drinkPackaging;
    }

    public void setDrinkPackaging(Packaging drinkPackaging) {
        this.drinkPackaging = drinkPackaging;
    }

    public Manufacturer getDrinkManufacturer() {
        return drinkManufacturer;
    }

    public void setDrinkManufacturer(Manufacturer drinkManufacturer) {
        this.drinkManufacturer = drinkManufacturer;
    }

    public Countries getDrinkCountries() {
        return drinkCountries;
    }

    public void setDrinkCountries(Countries drinkCountries) {
        this.drinkCountries = drinkCountries;
    }

    // toSTRING
    @Override
    public String toString() {
        return "DrinkDTO{" +
                "drinkName='" + drinkName + '\'' +
                ", drinkPrice=" + drinkPrice +
                ", drinkAbout='" + drinkAbout + '\'' +
                ", drinkPackaging=" + drinkPackaging +
                ", drinkManufacturer=" + drinkManufacturer +
                ", drinkCountries=" + drinkCountries +
                '}';
    }

客户控制器:

@GetMapping("/drinks")
    List<DrinkDTO> getAllDrinks(){
        return DrinkMapper.INSTANCE.drinksToDrinksDTO(customerService.getAllDrinks());
    }

构建.gradle

// Mapstruct
    implementation 'org.mapstruct:mapstruct:1.3.1.Final'
    annotationProcessor 'org.mapstruct:mapstruct-processor:1.3.1.Final'

DrinkMapper:

@Mapper
public interface DrinkMapper {

    DrinkMapper INSTANCE = Mappers.getMapper(DrinkMapper.class);

    @Mapping(source = "name", target = "drinkName")
    @Mapping(source = "price", target = "drinkPrice")
    @Mapping(source = "about", target = "drinkAbout")
    @Mapping(source = "packaging", target = "drinkPackaging")
    @Mapping(source = "manufacturer", target = "drinkManufacturer")
    @Mapping(source = "countries", target = "drinkCountries")
    DrinkDTO drinkToDrinkDTO(Drink drink);

    @Mapping(source = "drinkName", target = "name")
    @Mapping(source = "drinkPrice", target = "price")
    @Mapping(source = "drinkAbout", target = "about")
    @Mapping(source = "drinkPackaging", target = "packaging")
    @Mapping(source = "manufacturer", target = "drinkManufacturer")
    @Mapping(source = "countries", target = "drinkCountries")
    Drink drinkDTOtoDrink(DrinkDTO drinkDTO);

    @Mapping(source = "name", target = "drinkName")
    @Mapping(source = "price", target = "drinkPrice")
    @Mapping(source = "about", target = "drinkAbout")
    @Mapping(source = "packaging", target = "drinkPackaging")
    @Mapping(source = "manufacturer", target = "drinkManufacturer")
    @Mapping(source = "countries", target = "drinkCountries")
    List<DrinkDTO> drinksToDrinksDTO(List<Drink> drinks);
}

错误: 在此处输入图像描述

java
  • 1 1 个回答
  • 10 Views

1 个回答

  • Voted
  1. Best Answer
    Alexandr
    2020-07-22T22:51:42Z2020-07-22T22:51:42Z
    1. 对于映射drinkDTOtoDrink,您需要交换 manufacturer和drinkManufacturer,countries和 drinkCountries。
    2. 对于映射drinksToDrinksDTO,您不需要枚举字段映射。相反,您必须指定要使用的映射。在这种情况下drinkToDrinkDTO。
    3. 对于映射drinkDTOtoDrink,添加忽略字段id和deleted

    这是更正后的代码:

    import org.mapstruct.*;
    import org.mapstruct.factory.Mappers;
    
    import java.util.List;
    
    @Mapper
    public interface DrinkMapper {
    
        DrinkMapper INSTANCE = Mappers.getMapper(DrinkMapper.class);
    
        @Named("drinkToDrinkDTO")
        @Mappings({
                @Mapping(source = "name", target = "drinkName"),
                @Mapping(source = "price", target = "drinkPrice"),
                @Mapping(source = "about", target = "drinkAbout"),
                @Mapping(source = "packaging", target = "drinkPackaging"),
                @Mapping(source = "manufacturer", target = "drinkManufacturer"),
                @Mapping(source = "countries", target = "drinkCountries")
        })
        DrinkDTO drinkToDrinkDTO(Drink drink);
    
        @Mappings({
                @Mapping(target = "id", ignore = true),
                @Mapping(target = "deleted", ignore = true),
                @Mapping(source = "drinkName", target = "name"),
                @Mapping(source = "drinkPrice", target = "price"),
                @Mapping(source = "drinkAbout", target = "about"),
                @Mapping(source = "drinkPackaging", target = "packaging"),
                @Mapping(source = "drinkManufacturer", target = "manufacturer"),
                @Mapping(source = "drinkCountries", target = "countries")
        })
        Drink drinkDTOtoDrink(DrinkDTO drinkDTO);
    
        @IterableMapping(qualifiedByName = "drinkToDrinkDTO")
        List<DrinkDTO> drinksToDrinksDTO(List<Drink> drinks);
    
    }
    

    小测试代码:

    import org.junit.jupiter.api.Test;
    
    import java.util.Collections;
    import java.util.List;
    
    import static org.assertj.core.api.Assertions.assertThat;
    
    class DrinkMapperTest {
    
        @Test
        void dto2entity() {
            DrinkDTO dto = new DrinkDTO();
            dto.setDrinkName("test");
    
            Drink entity =
                    DrinkMapper.INSTANCE.drinkDTOtoDrink(dto);
            assertThat(entity).isNotNull();
            assertThat(entity.getName()).isEqualTo(dto.getDrinkName());
        }
    
        @Test
        void entity2dto() {
            Drink entity = new Drink();
            entity.setName("test");
    
            DrinkDTO dto =
                    DrinkMapper.INSTANCE.drinkToDrinkDTO(entity);
            assertThat(dto).isNotNull();
            assertThat(dto.getDrinkName()).isEqualTo(entity.getName());
        }
    
        @Test
        void entityList2dtoList() {
            Drink entity = new Drink();
            entity.setName("test");
    
            List<Drink> entityList =
                    Collections.singletonList(entity);
    
            List<DrinkDTO> dtoList =
                    DrinkMapper.INSTANCE.drinksToDrinksDTO(
                            entityList);
            assertThat(dtoList).isNotNull();
            assertThat(dtoList).hasSize(1);
            assertThat(dtoList.get(0)).isNotNull();
            assertThat(dtoList.get(0).getDrinkName()).isEqualTo(entity.getName());
        }
    
    }
    
    • 0

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