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Hello all, I'm using the modeler Excel Exporter, and I follow this howto to configure my javaAction; but now I got this error, I don't understand why?  Here is my screenshot of my GenerateExcelDoc javaAction. And here is the error I got. An error has occurred while handling the request. [User 'employee' with session id '4481dda2-3397-4924-a5e6-063a18582969' and roles 'Employee'] -------- com.mendix.core.CoreException: com.mendix.modules.microflowengine.MicroflowException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException     at Expense.GenerateReport (JavaAction : 'GenerateExcelDoc') Advanced stacktrace:     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:569) Caused by: com.mendix.modules.microflowengine.MicroflowException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException     at Expense.GenerateReport (JavaAction : 'GenerateExcelDoc') Advanced stacktrace:     at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:146) Caused by: com.mendix.core.CoreException: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:598) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.java:195) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: java.lang.NullPointerException     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:36) Caused by: java.lang.NullPointerException: null     at xlsreport.actions.GenerateExcelDoc.executeAction(GenerateExcelDoc.java:59)     at xlsreport.actions.GenerateExcelDoc.executeAction(GenerateExcelDoc.java:34)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57)     at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55)     at com.mendix.basis.actionmanagement.ActionManager$1.execute(ActionManager.java:186)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.java:191)     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:594)     at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:64)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.java:47)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.java:201)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.java:157)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:46)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:79)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:57)     at com.mendix.core.actionmanagement.CoreAction.call(CoreAction.java:55)     at com.mendix.basis.actionmanagement.ActionManager$1.execute(ActionManager.java:186)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.java:191)     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:563)     at com.mendix.basis.component.InternalCore.execute(InternalCore.java:578)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.$anonfun$executeMicroflow$5(ExecuteMicroflowAction.scala:108)     at scala.Option.getOrElse(Option.scala:121)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.executeMicroflow(ExecuteMicroflowAction.scala:108)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.execute(ExecuteMicroflowAction.scala:63)     at com.mendix.webui.requesthandling.ClientRequestHandler.$anonfun$handleRequest$2(ClientRequestHandler.scala:364)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:12)     at com.mendix.basis.actionmanagement.IMonitoredAction$$anon$1.execute(IMonitoredAction.scala:47)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.basis.actionmanagement.IMonitoredAction.monitor(IMonitoredAction.scala:49)     at com.mendix.basis.actionmanagement.IMonitoredAction.monitor$(IMonitoredAction.scala:25)     at com.mendix.webui.requesthandling.ClientRequestHandler$ClientMonitoredAction.monitor(ClientRequestHandler.scala:472)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleRequest(ClientRequestHandler.scala:349)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleActionWithSessionRequired(ClientRequestHandler.scala:280)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:242)     at com.mendix.webui.requesthandling.ClientRequestHandler.liftedTree1$1(ClientRequestHandler.scala:104)     at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:96)     at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:40)     at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:71)     at com.mendix.external.connector.MxRuntimeConnector$1.execute(MxRuntimeConnector.java:68)     at com.mendix.util.classloading.Runner.doRunUsingClassLoaderOf(Runner.java:32)     at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.java:74)     at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.java:858)     at com.mendix.m2ee.appcontainer.server.handler.RuntimeHandler.service(RuntimeHandler.java:42)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841)     at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:535)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)     at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188)     at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168)     at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473)     at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166)     at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155)     at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132)     at org.eclipse.jetty.server.Server.handle(Server.java:561)     at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:334)     at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)     at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279)     at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:104)     at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:247)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.produce(EatWhatYouKill.java:140)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)     at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:243)     at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:679)     at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:597)     at java.lang.Thread.run(Thread.java:748)  

asked 2018-05-15

3 answers