A customer noticed that, when downloading their XLSX files from Confluence, those uploaded through our plugin can’t be fully downloaded. The Chrome download remains stuck at 99.9%.
It happens for all files, but I’ve created an example.xlsx and compared the result in Confluence’s home attachment directory after upload:
- If I upload through Confluence’s editor (upload.action), it will be fine, and my example file is 5082 bytes,
- If I upload through the REST API, then any download of that file will hang at 99.9%, and the file is 5037 bytes, and not similar to the original file.
Does Confluence’s REST API mangle the file before saving it? Is there something to do with encodings/UTF-8? It’s not the BOM, since it’s 45 bytes of difference. Is there any other parameter to specify through the REST upload so that it doesn’t mangle the data/encoding/contents?
For information:
- URL for upload.action:
http://example.com/plugins/drag-and-drop/upload.action?pageId=1540099&filename=MIME%20Test.xlsx&size=5082&minorEdit=true&spaceKey=EXMPL&mimeType=application%2Fvnd.openxmlformats-officedocument.spreadsheetml.sheet&contentType=page&isVFMSupported=true&name=MIME%20Test.xlsx, interestingly the MIME type and size are specified in the URL, on top of the body, - URL for Confluence’s REST API:
POST http://example.com/rest/api/content/1234/child/attachment(documented here and tutorial here)
My code:
const $uploadField = $('#excel-integration-upload-form').find('input[type=file]');
if ($uploadField.size() === 0) throw new Error("The upload field can't be found on the page");
const field = $uploadField[0];
const fileToUpload = field.files && field.files[0];
// Post the multipart data to the create attachment REST resource
// there must be at least one file
if (fileToUpload) {
let path = AJS.contextPath() + "/rest/api/content/" + pageId + "/child/attachment";
let filename = fileToUpload.name;
let actionData = new FormData();
actionData.append('file', fileToUpload, filename);
actionData.append('minorEdit', 'true');
actionData.append('comment', 'Uploaded by Requirement Yogi');
$.ajax({
type: 'POST',
url: path,
data: actionData,
processData: false,
headers: {
"X-Atlassian-Token": "no-check"
},
contentType: false,
cache: false,
success: function (data, status, response) {
// ...
},
Does Confluence’s REST API mangle the file before saving it? Is there something to do with encodings/UTF-8? It’s not the BOM, since it’s 45 bytes of difference.
Is there any other parameter to specify through the REST upload so that it doesn’t mangle the data/encoding/contents?