"No attachments found" exception when trying to upload file through API

[Marko Praprotnik]

Hi!

I can't seem to figure out what I'm doing wrong when POST-ing a file to my JIRA Service Desk Server (v 3.13.0 on JIRA v 7.10.0).

I followed the tutorial on setting up OAuth and cloned the accompanying code from Bitbucket. This example code is the basis of my interaction with JIRA API and I can successfully create issues on my Desk through REST using OAuth.

Now I want to upload temporary files and than associate those files with issues, as described in the documentation. I'm trying to use the same google http-client as when creating  the issue, but I'm getting the following exception when trying to upload a file:

com.google.api.client.http.HttpResponseException: 400
{"errorMessage":"No attachments found.","i18nErrorMessage":{"i18nKey":"sd.attachment.empty.error","parameters":[]}}

Here is my code (somewhat messy after numerous trial & error attempts):

// Upload the file as a multipart form
MultipartContent content = new MultipartContent();
FileContent partContent = new FileContent(URLConnection.guessContentTypeFromName(myFile.getName()), myFile);
HttpHeaders partHeaders = new HttpHeaders();
partHeaders.set("Content-Disposition", "form-data; Name=\"file\" FileName=\"" + fileName + "\"");
partHeaders.setContentType(contentType);
MultipartContent.Part part = new MultipartContent.Part(partHeaders, partContent);
content.addPart(part);

// Create the request using HttpRequestFactory (which is handing OAuth)
HttpRequest uploadRequest = requestFactory.buildPostRequest(new GenericUrl(uploadUrl), content);
uploadRequest.getHeaders().setContentType("multipart/form-data; boundary="+MULTIPART_BOUNDARY);
uploadRequest.getHeaders().set("Origin", "http://my.origin.com");
uploadRequest.getHeaders().set("Referer", "http://my.referer.com");
uploadRequest.getHeaders().set("X-Atlassian-Token", "no-check");
uploadRequest.getHeaders().set("X-ExperimentalApi", "opt-in");

// "No attachments found" when executing the request
HttpResponse uploadResponse = uploadRequest.execute();

Attaching files through web UI works.

[Marko Praprotnik · Accepted solution]

Ok, I solved my issue. It seems that Google Java HttpClient does not follow the RFC 2388 specification. I used the following file as MultipartContent:

https://github.com/marcosalis/kraken/blob/master/kraken_lib/src/main/java/com/google/api/client/http/MultipartFormDataContent.java

It's written for Android, but super easy to adapt to common java projects.