问题
i am currently working on a project involving spring security (for OAuth2).
We are using the authorization_code flow.
However when the client hits the AuthorizationEndpoint (/oauth/authorize) we get an "InsufficientAuthenticationException". This may be due to an external system which is also involved in this flow which performs a redirect for the client, sending him to the /oauth/authorize endpoint.
From what I understand by looking through the debug logfile and from reading the source code, the principal is null which is used in the AuthorizationEndpoint.authorize method (specifically line 138, we are using spring-security-oauth2-2.0.7.RELEASE).
I understand what spring's problem is at this point (it does not "know" the user who is already authenticated with the system) but I do not understand which information specifically spring uses to identify the user (I guess this would be my central question)
I tried performing a GET against /oauth/authorize with the correct parameters and sending with the request the authorization header containing the bearer access token but spring always throws the InsufficientAuthenticationException. I'm hoping somebody can help me with this.
Best regards p.s.
回答1:
I am going to answer my own question here for the sake of documentation. TJ basically pointed me in the right direction.
In my case, the InsufficientAuthenticationException stems from a slightly wrong setup of the whole stack. For delivering the content to users an apache is used which also serves as a reverse proxy, truncating the root context of the application deployed on the tomcat behind it.
The answer which finally solved my problem can be found here. The problem actually was, that the session cookie contained an invalid path (the path attribute still contained the rootcontext, because tomcat has not been made aware that the apache in front of it is truncating the rootcontext to just "/".) So setting the path on tomcat side via setSessionCookie="/" in tomcat's context.xml did the trick.
So, when a redirect hit spring's oauth/authorize endpoint it did so with a session cookie containing the wrong path. because of this, for spring the request seemed to originate from an unauthenticated source, thus leaving me scratching my head about the InsufficientAuthenticationException.
来源：https://stackoverflow.com/questions/30058260/oauth2-with-spring-security-insufficientauthenticationexception