应用程序启动失败
Kodlama.io.Devs.business. concrete.ProgrammingLanguageManager中构造函数的参数1需要一个类型为“org.modelmapper.ModelMapper”的Bean,但找不到该Bean。
请考虑在配置中定义类型为“org.modelmapper.ModelMapper”的Bean。
编程语言管理器
@Service
public class ProgrammingLanguageManager implements ProgrammingLanguageService {
@Autowired
private ProgrammingLanguageRepository programmingLanguageRepository;
private ModelMapper modelMapper;
@Autowired
public ProgrammingLanguageManager(ProgrammingLanguageRepository programmingLanguageRepository,
ModelMapper modelMapper) {
this.programmingLanguageRepository = programmingLanguageRepository;
this.modelMapper = modelMapper;
}
// * * * CRUD OPERATIONS * * *
@Override
public CreateProgrammingLanguageResponse add(CreateProgrammingLanguageRequest createProgrammingLanguageRequest)
throws Exception {
nameCannotBeSame(createProgrammingLanguageRequest.getName());
ProgrammingLanguage programmingLanguage = modelMapper.map(createProgrammingLanguageRequest,
ProgrammingLanguage.class);
ProgrammingLanguage saveProgrammingLanguageResult = programmingLanguageRepository.save(programmingLanguage);
CreateProgrammingLanguageResponse createProgrammingLanguageResponse = modelMapper
.map(saveProgrammingLanguageResult, CreateProgrammingLanguageResponse.class);
return createProgrammingLanguageResponse;
}
@Override
public UpdateProgrammingLanguageResponse update(UpdateProgrammingLanguageRequest updateProgrammingLanguageRequest)
throws Exception {
nameCannotBeSame(updateProgrammingLanguageRequest.getName());
ProgrammingLanguage programmingLanguage = modelMapper.map(updateProgrammingLanguageRequest,
ProgrammingLanguage.class);
ProgrammingLanguage saveProgrammingLanguageResult = programmingLanguageRepository.save(programmingLanguage);
UpdateProgrammingLanguageResponse updateProgrammingLanguageResponse = modelMapper
.map(saveProgrammingLanguageResult, UpdateProgrammingLanguageResponse.class);
return updateProgrammingLanguageResponse;
}
@Override
public DeleteProgrammingLanguageResponse delete(DeleteProgrammingLanguageRequest deleteProgrammingLanguageRequest) {
ProgrammingLanguage getReferenceByIdProgrammingLanguageResult = programmingLanguageRepository
.getReferenceById(deleteProgrammingLanguageRequest.getId());
programmingLanguageRepository.delete(getReferenceByIdProgrammingLanguageResult);
DeleteProgrammingLanguageResponse deleteProgrammingLanguageResponse = modelMapper
.map(getReferenceByIdProgrammingLanguageResult, DeleteProgrammingLanguageResponse.class);
return deleteProgrammingLanguageResponse;
}
// * * * GET METHODS * * *
@Override
public List<GetAllProgrammingLanguagesResponse> getAll() {
List<ProgrammingLanguage> findAllProgrammingLanguageResult = programmingLanguageRepository.findAll();
return modelMapper.map(findAllProgrammingLanguageResult,
new TypeToken<List<GetAllProgrammingLanguagesResponse>>() {
}.getType());
}
@Override
public GetByIdProgrammingLanguageResponse getById(
GetByIdProgrammingLanguageRequest getByIdProgrammingLanguageRequest) {
ProgrammingLanguage getReferenceByIdProgrammingLanguageResult = programmingLanguageRepository
.getReferenceById(getByIdProgrammingLanguageRequest.getId());
GetByIdProgrammingLanguageResponse getByIdProgrammingLanguageResponse = modelMapper
.map(getReferenceByIdProgrammingLanguageResult, GetByIdProgrammingLanguageResponse.class);
return getByIdProgrammingLanguageResponse;
}
public GetByNameProgrammingLanguageResponse getByName(
GetByNameProgrammingLanguageRequest getByNameProgrammingLanguageRequest) {
ProgrammingLanguage getReferenceByNameProgrammingLanguageResult = new ProgrammingLanguage();
getReferenceByNameProgrammingLanguageResult = programmingLanguageRepository
.getByName(getByNameProgrammingLanguageRequest.toString());
GetByNameProgrammingLanguageResponse getByNameProgrammingLanguageResponse = modelMapper
.map(getReferenceByNameProgrammingLanguageResult, GetByNameProgrammingLanguageResponse.class);
return getByNameProgrammingLanguageResponse;
}
// * * * BUSINESS RULES * * *
private void nameCannotBeSame(String name) throws Exception {
ProgrammingLanguage programmingLanguage = programmingLanguageRepository.getByName(name);
var result = programmingLanguage;
if (result != null) {
throw new Exception(Messages.NAME_ALREADY_EXISTS);
}
}
}
我错过了一些东西,但我不知道是什么
2条答案
按热度按时间hiz5n14c1#
您的ModelMapper类没有注册为spring bean,它只是一个普通的java类。为了解决这个问题,您需要创建一个
@Configuration
类来定义bean,如果您想自动连接它。否则,您将无法触发依赖项注入,并且必须使用
new ModelMapper();
自己创建对象另一个技巧是避免用
@Autowire
注解字段。构造函数级注解就足够了。1l5u6lss2#
从错误消息中可以清楚地看到缺少
bean of type 'org.modelmapper.ModelMapper'
。因此,请将以下Bean添加到项目中,然后重试。**注意:**将此Bean添加到使用
@Configuration
注解得类中.