Bad Request 400 when making API call to Microsoft Graph

Question

The error I'm getting from Microsoft Graph API is this

error = {
  "code": "BadRequest",
  "innerError": {
    "date": "2017-04-10T19:37:08",
    "request-id": "973641dd-b150-4406-9f3b-fbcf6f7e5aa1"
  },
  "message": "The MIME type 'text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2' requires a '/' character between type and subtype, such as 'text/plain'."
}

I'm able to successfully get from the endpoint https://graph.microsoft.com/v1.0/me/contacts while using POSTman however going the the scribe-java library OAuthRequest I receive this error.
My request is going to the url https://graph.microsoft.com/v1.0/me/contacts with 2 headers. Authorization -> Bearer [Token]
Content-Type -> application/json

Kiwi

Match the request headers you send with postman and your application. There are obviously differences. – Somato

Hi Mark, Currently my POSTman and my request using the java library match. i.imgur.com/Pab6ejb.png this is what my post man request looks like. – Kiwi

Hi John, right click in your browser, and inspect the raw wire transfer. The server may also be expecting a User-Agent or something else. – Somato

I don't see this in the request that postman makes. The only extra header that is included in postman is a "Postman-Token" -> "", but this should not make a different in making an API call to microsoft graph. – Kiwi

Maybe replace * with */* in your request's MIME type. – Sumba

Could you post the code where you add the headers to your application request? I'm wondering if they're getting escaped or something. – Rivalee

Answer 1

It turns out the scribe-java library doesn't setup the request correctly. Switching to apache HttpClient and HttpGet resolved the issue for me.

Kiwi

It's actually OpenJDK's HttpURLConnection class that sets up this invalid accept string. See bugs.openjdk.java.net/browse/JDK-8163921. – Kasten

Answer 2

Try setting the "Accept" header explicitly in your request. POSTman may be defaulting you to [Accept=text/html, image/gif, image/jpeg, *; q=.2, /; q=.2]

Cristalcristate

Buddy you're genius, I spent past 3 hours with this and never thought of the Accept. Thank you. – Forelady

Answer 3

Hi I was getting same error when I tried to create a new user on AzureAD with graph api. I solved my issue that I changed my accept header to "Accept":"text/html, application/json". For your information

Carbolated