Adding attachment in Jira Software through REST API always returns a 415

[Simon Spalinger]

HI Community

In my forge application I am unable to add an attachment to an issue via Rest API.

Call within forge application returns 415 - unsupported media type

Call from standalone script works well

// call within my forge application alway returns in an 415 - unsupported media type

const response = await api.asUser().requestJira(route`/rest/api/3/issue/${issueKey}/attachments`, {
 method: 'POST',
 body : form,
 headers: {
 'Accept': 'application/json',
 'X-Atlassian-Token': 'no-check'
 }
});



// call from a standlone scritp works

let response = await fetch('https://rwai-test.atlassian.net/rest/api/3/issue/TPD-178094/attachments', {
  method: 'POST',
  body : form,
  headers: {
    'Authorization': `Basic ${Buffer.from(EMAIL+':'+API_TOKEN).toString('base64')}`,
    'Accept': 'application/json',
    'X-Atlassian-Token': 'no-check'
}});

[Simon Spalinger · Accepted solution]

finally found a way to make it work for me ... a little annoying that the examples from the official documentation do not work.

for me the following did work:

const formData = new FormData();
formData.append('file', Buffer.from(xml, 'utf-8'), { filename: filename });

const response = await api.asUser().requestJira(route`/rest/api/3/issue/${issueKey}/attachments`, {
  method: 'POST',
  body : formData,
  headers: {
    'Accept': 'application/json',
    'X-Atlassian-Token': 'no-check',
    'Content-Type': `multipart/form-data; boundary=${formData.getBoundary()}`,
  }
});

[Vishal Biyani]

@Simon Spalinger 

This forge sample code from Atlassian site is using /rest/api/2 instead of /rest/api/3

See if changing to version 2 makes a difference.

Otherwise, I don't see any other difference

// This sample uses Atlassian Forge and the `form-data` library. 
// https://developer.atlassian.com/platform/forge/ 
// https://www.npmjs.com/package/form-data 
import api from "@forge/api"; 
import FormData from "form-data"; 
const form = new FormData(); 
form.append('file', fileStream, {knownLength: fileSizeInBytes}); 
const response = await api.asApp().requestJira('/rest/api/2/issue/{issueIdOrKey}/attachments', 
{ 
method: 'POST', 
body: form, 
headers: { 'Accept': 'application/json', 'X-Atlassian-Token': 'no-check' } }
); 
console.log(`Response: ${response.status} ${response.statusText}`); 
console.log(await response.json()); 

[Simon Spalinger]

Thanks for your hint and sorry, I should have mentioned it: I tried both version 2 and version 3 and see the same behaviour. It works from standalone script but not within the forge application.

[Vishal Biyani]

Can you try adding Content-type in the headers and see if this makes a difference?

I would guess multipart/form-data will be a better choice

[Simon Spalinger]

@Vishal Biyani thanks for your hint - I tried the multipart/form-data but does not work either? Did you manage to upload an attachment within your forge application?

[Vishal Biyani]

Apologies I couldn't respond to your query in time. Great to see that you have it working