Hi All
I generated an auth code and used that code to issue an access token. In
second time as expected its not giving me an access token if I use same
code. But there is a null pointer.

TID: [-1234] [] [2017-03-23 08:46:21,034]  INFO
{org.wso2.carbon.identity.oauth.config.OAuthServerConfiguration} -  The
default Identity OAuth token issuer will be used. No custom token generator
is set.
TID: [-1234] [] [2017-03-23 08:47:12,696]  WARN
{org.wso2.carbon.identity.oauth.endpoint.authz.OAuth2AuthzEndpoint} -  No
session state found for the received Session ID :
afbb08c6-d832-4154-9e68-116cc02b7b94
TID: [-1234] [] [2017-03-23 08:50:59,399] ERROR
{org.wso2.carbon.identity.oauth2.OAuth2Service} -  Error occurred while
issuing the access token for Client ID : jF2udC5fHAZwglHYuYVt9rXdgrIa, User
ID null, Scope : [] and Grant Type : authorization_code
java.lang.NullPointerException
at
org.wso2.carbon.identity.oauth2.token.handlers.grant.AuthorizationCodeGrantHandler.validateGrant(AuthorizationCodeGrantHandler.java:121)
at
org.wso2.carbon.identity.oauth2.token.AccessTokenIssuer.issue(AccessTokenIssuer.java:212)
at
org.wso2.carbon.identity.oauth2.OAuth2Service.issueAccessToken(OAuth2Service.java:223)
at
org.wso2.carbon.identity.oauth.endpoint.token.OAuth2TokenEndpoint.getAccessToken(OAuth2TokenEndpoint.java:287)
at
org.wso2.carbon.identity.oauth.endpoint.token.OAuth2TokenEndpoint.issueAccessToken(OAuth2TokenEndpoint.java:151)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
org.apache.cxf.service.invoker.AbstractInvoker.performInvocation(AbstractInvoker.java:188)
at
org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:104)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:204)
at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:101)
at
org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:58)
at
org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:94)
at
org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
at
org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at
org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:249)
at
org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
at
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
at
org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
at
org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:171)
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:289)
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:209)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at
org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:265)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at
org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:120)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at
org.wso2.carbon.identity.context.rewrite.valve.TenantContextRewriteValve.invoke(TenantContextRewriteValve.java:72)
at
org.wso2.carbon.identity.authz.valve.AuthorizationValve.invoke(AuthorizationValve.java:91)
at
org.wso2.carbon.identity.auth.valve.AuthenticationValve.invoke(AuthenticationValve.java:60)
at
org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)
at
org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)
at
org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
at
org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
at
org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
at
org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at
org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1756)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1715)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)


Thanks & Regards
Danushka Fernando
Senior Software Engineer
WSO2 inc. http://wso2.com/
Mobile : +94716332729
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