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POGrails Oauth2 Provider NullPointerException
 

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    <p>I’m trying to use Oauth2 in Grails but can’t get it working. When trying to get access point I have NullPointerException. <br> So more details: Using <a href="http://grails.org/plugin/spring-security-oauth2-provider" rel="nofollow">Spring Security Oauth2 Provider</a> plugin. I have registered a client (with BaseClientDetails) in BootStrap.groovy and according to the <a href="https://github.com/adaptivecomputing/grails-spring-security-oauth2-provider" rel="nofollow">tutorial</a> the client could login with the URL given in the tokenEndpointUrl setting (/oauth/token by default) by using the following url: localhost:8080/app/oauth/token?grant_type=client_credentials&amp;client_id=clientId&amp;client_secret=clientSecret . </p> <p>But grails.plugin.cache.web.filter.PageFragmentCachingFilter throws exception, in the method described bellow controllerClass is null for some strange reason.</p> <pre><code>841 protected Object lookupController(Class&lt;?&gt; controllerClass) { &lt;br&gt; 842 return getBean(controllerClass.getName()); &lt;br&gt; 843 } </code></pre> <p>and controller class is null because grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter trying to get controller class from context ( getContext().getControllerClass() ) but null is returned. <br> Full stack is here <a href="http://pastebin.com/euramNaS" rel="nofollow">http://pastebin.com/euramNaS</a></p> <p>When I passing regular login flow (not directly using URL but via login form). I have LoginController fetched in the same place. And when in debug mode I set breakpoint to the “problematic” line and manually change controllerClass with LoginController (adding controllerClass = LoginController.class to watch) it made the trick and I receive JSON with tokens. <br><br> Tried to make empty application to clearly reproduce the problem and it is reproduced. So test project could be found <a href="http://goo.gl/1gmtT" rel="nofollow">http://goo.gl/1gmtT</a> . <br> Any ideas why controller could be not initialized when accessing url directly?</p>
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