我不能用graphql-java上传文件

Question

我尝试用java GraphQL上传文件。我研究了这个主题的解决方案：如何用GraphQL-Java上传文件？我使用的是graphql-java版本11.0、graphql-spring-boot-starter版本5.0.2、graphql-java-kickstart版本7.5.0。

public class PartDeserializer extends JsonDeserializer {

  @Override
  public Part deserialize(JsonParser p, DeserializationContext ctxt) throws IOException, JsonProcessingException {

    return null;
  }

  @Bean
  public ObjectMapper objectMapper() {
    ObjectMapper objectMapper = new ObjectMapper();
    objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
    SimpleModule module = new SimpleModule();
    module.addDeserializer(Part.class, new PartDeserializer());
    objectMapper.registerModule(module);
    return objectMapper;
  }
}

@Configuration
public class GraphqlConfig {

  @Bean
  public GraphQLScalarType uploadScalarDefine() {
    return ApolloScalars.Upload;
  }
}

public Boolean testMultiFilesUpload(List<Part> parts, DataFetchingEnvironment env) {
        // get file parts from DataFetchingEnvironment, the parts parameter is not use
        List<Part> attachmentParts = env.getArgument("files");
        int i = 1;
        for (Part part : attachmentParts) {
            String uploadName = "copy" + i;
            try {
                part.write("your path:" + uploadName);
            } catch (IOException e) {
                e.printStackTrace();
            }
            i++;
        }
        return true;
    }

scalar Upload
testMultiFilesUpload(files: [Upload!]!): Boolean

operations
{ "query": "mutation($files: [Upload!]!) {testMultiFilesUpload(files:$files)}", "variables": {"files": [null,null] } }

map
{ "file0": ["variables.files.0"] , "file1":["variables.files.1"]}

file0
0.jpeg
file1
1.jpeg

INFO 11663 --- [0.1-1100-exec-7] g.servlet.AbstractGraphQLHttpServlet     : Bad POST multipart request: no part named "graphql" or "query"

我做错了什么？

Answer 1

我建议您使用Apollo https://github.com/apollographql/apollo-android

它使用RxJava集成、改造、订阅和对AutoValue的支持。这将使您的工作变得更容易，因为在构建查询&解析GraphQL响应方面没有直接的方法。