#okhttp3 not passing multipart body

1 messages · Page 1 of 1 (latest)

high ridge
#

(My java code is below, ty discord limitations)

I have fast api server, which returns this error (req.body.request and req.body.file are null for some reason)

{"detail":[{"type":"missing","loc":["body","request"],"msg":"Field required","input":null,"url":"https://errors.pydantic.dev/2.5/v/missing"},{"type":"missing","loc":["body","file"],"msg":"Field required","input":null,"url":"https://errors.pydantic.dev/2.5/v/missing"}]}

What im doing wrong? I havt found any good documentation how multipart body in okhttp3 should be made, so i think problem could be there...

(part of api doc if u need)

image.png
ruby prairieBOT
#

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Hey @high ridge! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

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high ridge
# 
public static Response makeSendReq(String fileName, String fullPath, String fileField) throws IOException {



    // building json req body
    ObjectMapper objectMapper = new ObjectMapper();
    ObjectNode requestBodyJson = objectMapper.createObjectNode();
    ObjectNode fsEntityJson = objectMapper.createObjectNode();
    fsEntityJson.put("name", fileName);
    fsEntityJson.put("abs_path", fullPath);
    fsEntityJson.put("base_type", "file");
    requestBodyJson.set("fs_entity", fsEntityJson);
    requestBodyJson.put("file_field", fileField);

    String requestBodyJsonString = null;
    try {
      requestBodyJsonString = objectMapper.writeValueAsString(requestBodyJson);
    } catch (JsonProcessingException e) {}
     




    // building request body from json
    final Path _pathToFile = Paths.get(fileName);
    RequestBody fileBody = new RequestBody() {
      @Nullable
      @Override
      public MediaType contentType() {
        return MediaType.parse("application/oclet-stream");
      }

      @Override
      public void writeTo(BufferedSink sink) throws IOException {
        try (Source src = Okio.source(_pathToFile)) {
          System.out.println("idkwhathappens");
          sink.writeAll(src);
        }
      }
    };





    // multipart
    MultipartBody.Part filePart = MultipartBody.Part.createFormData("file", fileName, fileBody);
    MultipartBody.Part requestPart = MultipartBody.Part.createFormData("request", requestBodyJsonString);

    MultipartBody multipartBody = new MultipartBody.Builder()
                                      .addPart(filePart)
                                      .addPart(requestPart)
                                      .build();
# 




    // building request
    OkHttpClient client = new OkHttpClient();

    String targetUrl = Config.getPassAppRawUrl() + "/api/fs-service/upload-file";
    Request.Builder req = new Request.Builder()
                              .url(targetUrl)
                              .post(multipartBody);
                              



    // add aCookie
    String aToken = Config.getAToken();
    if (aToken != null) {
      req.addHeader("Cookie", "a-token="+aToken);
    }


    // executing request
    Response response = client.newCall(req.build()).execute();


    
    // returning result
    System.out.println(response.body().string());
    return response;
}
merry belfry
#

i think addPart is for application/x-www-form-urlencoded not multipart/form-data and so okhttp is sending the wrong content type

high ridge
#

ty, worked now

merry belfry
high ridge
#

/close

merry belfry
#

i'll try