Spring security OAuth2 accept JSON

Question

I am starting with Spring OAuth2. I would like to send the username and password to /oauth/token endpoint in POST body in application/json format.

curl -X PO         


        

Answer 1

With Spring Security 5 I only had to add .allowFormAuthenticationForClients() + the JsontoUrlEncodedAuthenticationFilter noted in the other answer to get it to accept json in addition to x-form post data. There was no need to register the resource server or anything.