@Mapper 注释在编译时未实现：映射器类中缺少 bean

Question

我的映射器接口存在问题，它在编译时创建异常：上下文初始化期间遇到异常 - 取消刷新尝试：org.springframework.beans.factory.UnsatisfiedDependencyException：创建文件中定义的名为“bookServiceImpl”的 bean 时出错/home/emmanuel/Documents/Dev/spring app/hymnbook/hymnbook/target/classes/com/zanah/hymnbook/service/BookServiceImpl.class]：通过构造函数参数1表达的不满足的依赖关系：没有类型为“com.zanah”的合格bean .hymnbook.mapper.BookMapper' 可用：预计至少有 1 个有资格作为自动装配候选者的 bean。依赖注释：{}

com.zanah.hymnbook.service.BookServiceImpl 中构造函数的参数 1 需要类型为“com.zanah.hymnbook.mapper.BookMapper”的 bean，但无法找到。

Mapper Interface

@Mapper(componentModel = "spring")

public interface BookMapper {

    Book bookDtoToBook(BookDto bookDto);
    BookDto bookToBookDto(Book book);

    List<Book> BookDtoToBook(List<BookDto> bookDtoList);
    List<BookDto> bookToBookDto(List<Book> bookList);

    BookDto bookRequestDtoToBookDto(BookRequestDto bookRequestDto);

}

Service Implemenation class 

@Service
@AllArgsConstructor
public class BookServiceImpl implements BookService{

@Autowired
    private final BookRepository bookRepository;


@Autowired
    private final BookMapper bookMapper;


    @Override
    public BookDto saveBook(BookDto bookDto) {
        Book recordFromDB = bookRepository.findByName(bookDto.getName());

        if (recordFromDB != null) {
            throw new ResourceAlreadyExistException("Book", "ID", bookDto.getName());
        }

        Book recordToBeSaved = bookMapper.bookDtoToBook(bookDto);

        Book savedRecord = bookRepository.save(recordToBeSaved);

        BookDto result = bookMapper.bookToBookDto(savedRecord);

        return result;

    }

    @Override
    public List<BookDto> findAllBooks() {
        return null;
    }

    @Override
    public BookDto getBookById(Long id) {
        return null;
    }

    @Override
    public BookDto updateBook(BookDto Bookdto, Long id) {
        return null;
    }

    @Override
    public void deleteBook(Long id) {

    }
}

Main Application 

@SpringBootApplication
@ComponentScan(basePackages = "com.zanah.hymnbook")
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }

}

我已经验证了 pom.xml 文件中的依赖关系以包含 mapstruct

Answer 1

这帮助我解决了我的问题https://stackoverflow.com/a/50204696/22585216我必须更新到更高版本才能使其正常工作3.11.0