mapstruct-@mapper注释不创建bean

Question

我从以下来源下载了应用程序https://github.com/springframeworkguru/spring5-mvc-rest/tree/vendor-api，但Mapstruct遇到了问题。

@Mapper
public interface CategoryMapper {

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


CategoryDTO categoryToCategoryDTO(Category category);

@Data
public class CategoryDTO {
    private Long id;
    private String name;
}

@Data
@Entity
public class Category {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
}

@Service
public class CategoryServiceImpl implements CategoryService {

    private final CategoryMapper categoryMapper;
    private final CategoryRepository categoryRepository;

    public CategoryServiceImpl(CategoryMapper categoryMapper, CategoryRepository categoryRepository) {
        this.categoryMapper = categoryMapper;
        this.categoryRepository = categoryRepository;
    }
}

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
    <org.mapstruct.version>1.2.0.CR2</org.mapstruct.version>
</properties>
<dependency>
        <groupId>org.mapstruct</groupId>
        <artifactId>mapstruct-jdk8</artifactId>
        <version>${org.mapstruct.version}</version>
</dependency>

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.7.0</version>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <annotationProcessorPaths>
            <path>
                 <groupId>org.projectlombok</groupId>
                 <artifactId>lombok</artifactId>
                 <version>${lombok.version}</version>
            </path>
            <path>
                 <groupId>org.mapstruct</groupId>
                 <artifactId>mapstruct-processor</artifactId>
                 <version>${org.mapstruct.version}</version>
           </path>
        </annotationProcessorPaths>
        <compilerArgs>
           <compilerArg>
                 -Amapstruct.defaultComponentModel=spring
           </compilerArg>
        </compilerArgs>
    </configuration>
</plugin>

Parameter 0 of constructor in 
guru.springfamework.services.CategoryServiceImpl required a bean of type 'guru.springfamework.api.v1.mapper.CategoryMapper' that could not be found.

Consider defining a bean of type 'guru.springfamework.api.v1.mapper.CategoryMapper' in your configuration.

我认为在Intellij注释中@mapper不为mapper创建bean。我没有改变John GitHub的代码。你知道吗？我试图将生成的路径源更改为目标，但这没有帮助，谢谢你的帮助。

Answer 1

我通过做来解决这个错误

>

MVN清洁安装

还将此添加到您的pom中

   <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.7.0</version>
        <configuration>
            <source>1.8</source>
            <target>1.8</target>
            <annotationProcessorPaths>
                <path>
                    <groupId>org.projectlombok</groupId>
                    <artifactId>lombok</artifactId>
                    <version>${lombok.version}</version>
                </path>
                <path>
                    <groupId>org.mapstruct</groupId>
                    <artifactId>mapstruct-processor</artifactId>
                    <version>${org.mapstruct.version}</version>
                </path>
            </annotationProcessorPaths>
            <compilerArgs>
                <compilerArg>
                       -Amapstruct.defaultComponentModel=spring
                </compilerArg>
            </compilerArgs>
        </configuration>
    </plugin>