How to upload a single file using the Upload scalar?

[sanchesfrolov]

Hello team !
I am pretty new with GraphQL and I need help with uploading a single file.
I was following the spec and related issues from the repo:
https://github.com/graphql-java-kickstart/graphql-java-tools/issues/240,
https://github.com/graphql-java-kickstart/graphql-java-tools/issues/288

I have following dependencies in my gradle script:
implementation "com.graphql-java-kickstart:graphql-kickstart-spring-boot-starter-webflux:6.0.1"
implementation "com.graphql-java-kickstart:graphql-kickstart-spring-boot-autoconfigure-tools:6.0.1"

and I added following implementation:

scalar Upload
type Mutation {
testSingleFileUpload(file: Upload): UploadResult
}

inside schema.graphql.

@bean
GraphQLScalarType upload()
{
return ApolloScalars.Upload;
}

inside my configuration.

public UploadResult testMultiFilesUpload(Part part, DataFetchingEnvironment environment) {
Part part1 = environment.getArgument("file");
...
}

Inside mutation resolver

In order to check it I used Altair GraphQL Client(chrome-extension).
So when I post my request it eventually comes to > > >graphql.kickstart.spring.AbstractGraphQLController.graphqlPOST method

and

ResponseStatusException(HttpStatus.UNPROCESSABLE_ENTITY, "Could not process GraphQL request")

is thrown because the request has

multipart/form-data;

as a content type, but the method waits for application/json or application/graphql

I think I missed something important in my implementation and just need more detail how I could set up all needed environment for file uploading.

[ayush11-11]

Bad POST multipart request: no part named "graphql" or "query" getting this while sending response through potman

[LeKuetebi]

Hey sanchesfrolov. By any chance did you get a solution for this problem? I'm facing the same issue.