我试图从wso2调用API以创建应用程序并生成应用程序密钥。我调用API {{storeURL}}/api/am/store/v0.12/applications来创建应用程序。该API可以。
然后我打电话给api {{storeURL}}/api/am/store/v0.12/applications/generate-keys?applicationId={{applicationId}}，我看到了这个错误（我有wso2am-2.2.0）：
> ERROR GlobalThrowableMapper An Unknown exception has been captured by
> global exception mapper. java.lang.NullPointerException at
> org.wso2.carbon.apimgt.impl.dao.ApiMgtDAO.getApplicationByUUID_aroundBody242(ApiMgtDAO.java:5550)
> at
> org.wso2.carbon.apimgt.impl.dao.ApiMgtDAO.getApplicationByUUID(ApiMgtDAO.java:5517)
> at
> org.wso2.carbon.apimgt.impl.AbstractAPIManager.getApplicationByUUID_aroundBody114(AbstractAPIManager.java:1593)
> at
> org.wso2.carbon.apimgt.impl.AbstractAPIManager.getApplicationByUUID(AbstractAPIManager.java:1592)
> at
> org.wso2.carbon.apimgt.rest.api.store.impl.ApplicationsApiServiceImpl.applicationsGenerateKeysPost(ApplicationsApiServiceImpl.java:194)
> at
> org.wso2.carbon.apimgt.rest.api.store.ApplicationsApi.applicationsGenerateKeysPost(ApplicationsApi.java:178)
> 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:179)
> at
> org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
> at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:192)
> at org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:103)
> at
> org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
> at
> org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
> at
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
> at
> org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
> at
> org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
> at
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
> at
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
> at
> org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:191)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:301)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:220)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:650) at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:276)
> 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.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
> at
> org.wso2.carbon.identity.context.rewrite.valve.TenantContextRewriteValve.invoke(TenantContextRewriteValve.java:80)
> 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$1.invoke(CarbonTomcatValve.java:47)
> at
> org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)
> at
> org.wso2.carbon.event.receiver.core.internal.tenantmgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:48)
> at
> org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)
> at
> org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)
> at
> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:1025)
> at
> org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
> at
> org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1137)
> at
> org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1775)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1734)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> at java.lang.Thread.run(Thread.java:748)