Simple playground application using Spring Security with OAuth2 and JWT to

• secure a resource with OAuth2
• provide an endpoint to supply JWT access tokens to the resource

Usage:

• run with

$ gradle bootRun

• try to access resource w/o authorization, which will fail:

$ curl localhost:8080/foobar'

• request OAuth2 access token by supplying user credentials:

$ curl -X 'POST'
    -u my_client_username:my_client_password
    --data "username=hdampf
        &password=wert123$
        &client_id=my_client_username
        &grant_type=password
        &scope=foobar_scope"
    localhost:8080/oauth/token

• the endpoint replies with an access token, which is a Json Web Token (JWT) provided as a base64-encoded string
• go to http://jwt.io/ and paste the token there to see its contents. the secret used is "foobar" (as set in AuthorizationServer)
• access resource with access token:

$ curl -H "Authorization: Bearer $TOKEN" localhost:8080/foobar