SpringBoot GraphQL 突变给出错误 No Root resolvers for query type 'Query' found

Question

在带有 GraphQL 的 SpringBoot 中使用突变时，出现错误No Root resolvers for query type 'Query' found。查询工作正常，但在添加 GraphQLMutationResolver 时，它在 Spring Boot 启动时出现错误。

请多多指教。

.graphqls 文件

type Query {
    allBooks: [Book]
    getBookByIsn(isn: Int): Book
    allPublishers: [Publisher]
}

type Book {
    isn: Int
    title: String
    author: String
    publishedDate: String
    publisher: Publisher!
}

type Publisher {
    pId : Int
    publisherName: String
    address: String
}

input CreatePublisher {
    pId : Int
    publisherName: String
    address: String
}


type Mutation {
    addPublisher(input: CreatePublisher!): Publisher
}

变异解析器

@Component
public class PublisherMutation implements GraphQLMutationResolver{
    
    @Autowired
    private PublisherRepository publisherRepository;
    
    @Transactional
    public Publisher addPublisher(CreatePublisher createPublisher ) {
        Publisher publisher = new Publisher(createPublisher.getPId(), createPublisher.getPublisherName(), createPublisher.getAddress());
        publisherRepository.save(publisher);
        return publisher;
        
    }

}

Answer 1

完成，通过为 Create 添加 Mutation 类型的 newTypeWiring 解决