Spring Boot GraphQL handle file upload in controller instead of implementing the GraphQLMutationResolver

[MUsman1992]

Hi @oliemansm

I have implemented how to handle file upload in spring boot through GraphQL service by implementing GraphQLMutationResolver . But I want to know that is there any way to directly handle it in controller?I want to do something like this

`

@Autowired 
private CountryRepository countryRepository;

@QueryMapping
public List<Country> getCountriesDetails() {
    return countryRepository.getCountriesDetails();
}


@MutationMapping
public String uploadFile(DataFetchingEnvironment environment) {
		DefaultGraphQLServletContext defaultGraphQLServletContext = environment.getContext();
		defaultGraphQLServletContext.getFileParts().forEach(part -> {
			System.out.println("uploading: {} " + part.getSubmittedFileName() + " size: {} " + part.getSize());
		});    	    
	    return "File uploaded successfully.";
}

`
The above code does not work but if I try to do it by creating a separate class that implements GraphQLMutationResolver like you have done in your project https://github.com/graphql-java-kickstart/samples/blob/master/file-upload/src/main/java/upload/UploadMutation.java code works. Actually my all services are in controller but for file upload service I have to especially implement the GraphQLMutationResolver. I get the following error when I try to implement file upload logic in the controller. Do you have any idea how to solve this issue?