如何阻止 DevOps REST API 将传入的 JSON 有效负载包装在双引号中？

Question

I am attempting to use the ADO REST API to attach files to work items. The problem seems to be that the incoming string is getting wrapped in double quotes at some point in the process. This can be seen in any attached.txt files (which open fine), and renders.png and.jpg files unable to be opened. The content I'm trying to attach is attachment "content bytes" pulled from Outlook via a connector in Oracle Integration Cloud, which I base 64 decode in OIC before sending to ADO.

This is the call I use to create the attachment in ADO (media type is application/json-patch+json):

https://dev.azure.com/{org}/{project}/_apis/wit/attachments?api-version=6.0

"[]"

This is the response from that that I use to make the next call (media type is JSON):

{
  "id" : "",
  "url" : ""
}

This is the next call to then associate the attachment with a specific work item (media type is application/json-patch+json):

https://dev.azure.com/{org}/{project}/_apis/wit/workitems/{id}?api-version=6.0

{
  "op" : "add",
  "path" : "/relations/-",
  "value" : {
    "rel" : "AttachedFile",
    "url" : ""
  }
} 

Is there an html header or something I can use to prevent this from happening?

Thanks!

Answer 1

Soooo, it turns out Microsoft's docs are somewhat misleading and suggest that ADO is expecting a JSON payload for attachment creation when it is actually expecting just binary content. Once I found that out I used the function "decodeBase64ToReference" in OIC on the "contentBytes" from outlook. I then reconfigured my OIC connector to send a binary payload and mapped everything accordingly. Worked like a charm.

https://i.stack.imgur.com/92tPs.png

https://i.stack.imgur.com/WSKnt.png