oryan-block · June 18, 2021 17:39 · oryan-block · Jan 8, 2021
diff --git a/FileDeserializer.java b/FileDeserializer.java
 public static class FileDeserializer extends StdDeserializer<MultipartFile> {
    @Override
    public MultipartFile deserialize(
        JsonParser jsonParser,
        DeserializationContext deserializationContext
    ) throws IOException, JsonProcessingException {
        JsonNode node = jsonParser.getCodec().readTree(jsonParser);
        return new MockMultipartFile(
            node.get("name").textValue(),
            node.get("originalFilename").textValue(),
            node.get("contentType").textValue(),
            node.get("content").binaryValue());
    }
 }
diff --git a/FileSerializer.java b/FileSerializer.java
 public static class FileSerializer extends StdSerializer<MultipartFile> {
    @Override
    public void serialize(
        MultipartFile multipartFile, JsonGenerator jsonGenerator, SerializerProvider serializerProvider
    ) throws IOException {
        jsonGenerator.writeStartObject();
        jsonGenerator.writeStringField("name", multipartFile.getName());
        jsonGenerator.writeStringField("originalFilename", multipartFile.getOriginalFilename());
        jsonGenerator.writeStringField("contentType", multipartFile.getContentType());
        jsonGenerator.writeBinaryField("content", multipartFile.getBytes());
        jsonGenerator.writeEndObject();
    }
 }
diff --git a/GraphQLSchemaBuilder.java b/GraphQLSchemaBuilder.java
 var module = new SimpleModule();
 module.addSerializer(MultipartFile.class, new FileSerializer(MultipartFile.class));
 module.addDeserializer(MultipartFile.class, new FileDeserializer(MultipartFile.class));
 mapper.registerModule(module);

 var options = SchemaParserOptions.newOptions()
    ...
    .objectMapperProvider(p -> mapper)
    .build();

 this.schema = SchemaParser.newParser()
    ...
    .options(options)
    .build()
    .makeExecutableSchema();
diff --git a/schema.graphqls b/schema.graphqls
 extend type Query {
  test(input: FileInput): ID!
 }

 input FileInput {
  name: String!
  file: Upload
 }
diff --git a/TestQuery.java b/TestQuery.java
 public class TestQuery implements GraphQLQueryResolver {

    public String test(FileInputDTO input, GraphQLContext context) {
        return input.getFile().getName();
    }

    public static class FileInputDTO {
        String name;
        MultipartFile file;

        public FileInputDTO(String name, MultipartFile file) {
            this.name = name;
            this.file = file;
        }

        ...
    }
 }
	public static class FileDeserializer extends StdDeserializer<MultipartFile> {
	@Override
	public MultipartFile deserialize(
	JsonParser jsonParser,
	DeserializationContext deserializationContext
	) throws IOException, JsonProcessingException {
	JsonNode node = jsonParser.getCodec().readTree(jsonParser);
	return new MockMultipartFile(
	node.get("name").textValue(),
	node.get("originalFilename").textValue(),
	node.get("contentType").textValue(),
	node.get("content").binaryValue());
	}
	}
	public static class FileSerializer extends StdSerializer<MultipartFile> {
	@Override
	public void serialize(
	MultipartFile multipartFile, JsonGenerator jsonGenerator, SerializerProvider serializerProvider
	) throws IOException {
	jsonGenerator.writeStartObject();
	jsonGenerator.writeStringField("name", multipartFile.getName());
	jsonGenerator.writeStringField("originalFilename", multipartFile.getOriginalFilename());
	jsonGenerator.writeStringField("contentType", multipartFile.getContentType());
	jsonGenerator.writeBinaryField("content", multipartFile.getBytes());
	jsonGenerator.writeEndObject();
	}
	}
	var module = new SimpleModule();
	module.addSerializer(MultipartFile.class, new FileSerializer(MultipartFile.class));
	module.addDeserializer(MultipartFile.class, new FileDeserializer(MultipartFile.class));
	mapper.registerModule(module);

	var options = SchemaParserOptions.newOptions()
	...
	.objectMapperProvider(p -> mapper)
	.build();

	this.schema = SchemaParser.newParser()
	...
	.options(options)
	.build()
	.makeExecutableSchema();
	extend type Query {
	test(input: FileInput): ID!
	}

	input FileInput {
	name: String!
	file: Upload
	}
	public class TestQuery implements GraphQLQueryResolver {

	public String test(FileInputDTO input, GraphQLContext context) {
	return input.getFile().getName();
	}

	public static class FileInputDTO {
	String name;
	MultipartFile file;

	public FileInputDTO(String name, MultipartFile file) {
	this.name = name;
	this.file = file;
	}

	...
	}
	}