iam new to mendix iam getting these error while creating java action for exporting Document as PPT format please help me out. An error has occurred while handling the request. [User MxAdmin with session id 36dfb64d-XXXX-XXXX-XXXX-XXXXXXXX42ec and roles Developer]

0
An error has occurred while handling the request. [User 'MxAdmin' with session id '36dfb64d-XXXX-XXXX-XXXX-XXXXXXXX42ec' and roles 'Developer'] -------- com.mendix.modules.microflowengine.MicroflowException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: Java action was not implemented     at Visitor_Pass_Management.Microflow_3 (JavaAction : 'Java_action') Advanced stacktrace:     at com.mendix.modules.microflowengine.MicroflowUtil.processException(MicroflowUtil.java:83) Caused by: com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: Java action was not implemented     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:110) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: com.mendix.systemwideinterfaces.MendixRuntimeException: Java action was not implemented     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:23) Caused by: com.mendix.systemwideinterfaces.MendixRuntimeException: Java action was not implemented     at visitor_pass_management.actions.Java_action.executeAction(Java_action.java:50)     at visitor_pass_management.actions.Java_action.executeAction(Java_action.java:20)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48)     at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:56)     at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:106)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:105)     at com.mendix.basis.actionmanagement.UserActionCallBuilderImpl.execute(UserActionCallBuilderImpl.scala:57)     at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:35)     at com.mendix.modules.microflowengine.actions.actioncall.ForegroundJavaAction.doExecute(ForegroundJavaAction.scala:11)     at com.mendix.modules.microflowengine.actions.actioncall.JavaAction.execute(JavaAction.scala:38)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.$anonfun$execute$1(MicroflowObject.scala:32)     at scala.Option.flatMap(Option.scala:283)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowObject.execute(MicroflowObject.scala:29)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.$anonfun$executeAfterBreakingIfNecessary$2(MicroflowImpl.scala:167)     at scala.Option.flatMap(Option.scala:283)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAfterBreakingIfNecessary(MicroflowImpl.scala:167)     at com.mendix.modules.microflowengine.microflow.impl.MicroflowImpl.executeAction(MicroflowImpl.scala:114)     at com.mendix.systemwideinterfaces.core.UserAction.execute(UserAction.java:58)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.doCall(CoreActionHandlerImpl.scala:71)     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.call(CoreActionHandlerImpl.scala:48)     at com.mendix.core.actionmanagement.internal.InternalCoreAction.call(InternalCoreAction.java:56)     at com.mendix.basis.actionmanagement.ActionManager.$anonfun$executeSync$2(ActionManager.scala:106)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionManager.executeSync(ActionManager.scala:105)     at com.mendix.basis.actionmanagement.MicroflowCallBuilderImpl.execute(MicroflowCallBuilderImpl.scala:62)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.runMicroflow(ExecuteMicroflowAction.scala:76)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.$anonfun$apply$3(ExecuteMicroflowAction.scala:42)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$.$anonfun$liftEither$1(RegularClientAction.scala:30)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.$anonfun$apply$4(RegularClientAction.scala:56)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState(StateHandling.scala:42)     at com.mendix.webui.requesthandling.helpers.StateHandling.withState$(StateHandling.scala:39)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.withState(RegularClientAction.scala:46)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:54)     at com.mendix.webui.actions.client.RegularClientAction$Helpers$StateHandler.apply(RegularClientAction.scala:46)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:43)     at com.mendix.webui.actions.client.ExecuteMicroflowAction.apply(ExecuteMicroflowAction.scala:22)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$3(RegularClientAction.scala:113)     at scala.util.Try$.apply(Try.scala:210)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2(RegularClientAction.scala:113)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$2$adapted(RegularClientAction.scala:111)     at com.mendix.webui.requesthandling.helpers.ContextHandling.$anonfun$inContext$5(ContextHandling.scala:57)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)     at com.mendix.basis.actionmanagement.ActionMonitoring$.$anonfun$monitor$1(ActionMonitoring.scala:49)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.basis.actionmanagement.ActionMonitoring$.monitor(ActionMonitoring.scala:49)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:57)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:31)     at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:87)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext(ContextHandling.scala:28)     at com.mendix.webui.requesthandling.helpers.ContextHandling.inContext$(ContextHandling.scala:20)     at com.mendix.webui.actions.client.RegularClientAction.inContext(RegularClientAction.scala:87)     at com.mendix.webui.actions.client.RegularClientAction.$anonfun$execute$1(RegularClientAction.scala:111)     at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.scala:18)     at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest(ProfileHandling.scala:14)     at com.mendix.webui.requesthandling.helpers.ProfileHandling.profileRequest$(ProfileHandling.scala:10)     at com.mendix.webui.actions.client.RegularClientAction.profileRequest(RegularClientAction.scala:87)     at com.mendix.webui.actions.client.RegularClientAction.execute(RegularClientAction.scala:108)     at com.mendix.webui.requesthandling.ClientRequestHandler.handleAction(ClientRequestHandler.scala:106)     at com.mendix.webui.requesthandling.ClientRequestHandler.processRequest(ClientRequestHandler.scala:79)     at com.mendix.externalinterface.connector.RequestHandler.doProcessRequest(RequestHandler.java:37)     at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1(MxRuntimeConnector.scala:50)     at com.mendix.external.connector.MxRuntimeConnector.$anonfun$processRequest$1$adapted(MxRuntimeConnector.scala:50)     at com.mendix.util.classloading.Runner$.withContextClassLoader(Runner.scala:20)     at com.mendix.external.connector.MxRuntimeConnector.processRequest(MxRuntimeConnector.scala:50)     at com.mendix.basis.impl.MxRuntimeImpl.processRequest(MxRuntimeImpl.scala:221)     at com.mendix.m2ee.appcontainer.server.handler.RuntimeServlet.service(RuntimeServlet.scala:25)     at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)     at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)     at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1631)     at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:230)     at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)     at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)     at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)     at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)     at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)     at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)     at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)     at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)     at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)     at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)     at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)     at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)     at org.eclipse.jetty.server.Server.handle(Server.java:516)     at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)     at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)     at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)     at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)     at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)     at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)     at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)     at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)     at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)     at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)     at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)     at java.base/java.lang.Thread.run(Thread.java:829)  
asked
3 answers
1

The error means that there is no Java code in the Java action. When creating a Java action Mendix makes a template for you where you need to inject your own code. See also the documentation here: https://docs.mendix.com/howto/extensibility/howto-connector-kit/ and here: https://docs.mendix.com/refguide/extending-your-application-with-custom-java/

 

Regards,

Ronald

 

answered
1

Your Java action is throwing a com.mendix.systemwideinterfaces.MendixRuntimeException in the custom code. You need to remove this line to get rid of the error.

 

Your Java action is also expected to return a String, so make sure you return one.

 

You will also want to remove the System.out.println. I suggest you log this instead. This link will help.
https://www.robertprice.co.uk/robblog/logging-from-a-mendix-java-action/

Good luck!

 

answered
0

package visitor_pass_management.actions;

import com.mendix.systemwideinterfaces.core.IContext;
import com.mendix.webui.CustomJavaAction;
import com.mendix.systemwideinterfaces.core.IMendixObject;
import java.io.File;
import java.io.FileOutputStream;
import org.apache.poi.xslf.usermodel.XMLSlideShow;

public class Java_action extends CustomJavaAction<java.lang.String>
{
    private IMendixObject __output;
    private visitor_pass_management.proxies.File_output output;
    private java.lang.String input;

    public Java_action(IContext context, IMendixObject output, java.lang.String input)
    {
        super(context);
        this.__output = output;
        this.input = input;
    }

    @java.lang.Override
    public java.lang.String executeAction() throws Exception
    {
        this.output = this.__output == null ? null : visitor_pass_management.proxies.File_output.initialize(getContext(), __output);

        // BEGIN USER CODE
        //creating a new empty slide show
        XMLSlideShow ppt = new XMLSlideShow();

        //creating an FileOutputStream object
        File file = new File("example1.pptx");
        FileOutputStream out = new FileOutputStream(file);

        //saving the changes to a file
        ppt.write(out);
        System.out.println("Presentation created successfully");
        out.close();
        throw new com.mendix.systemwideinterfaces.MendixRuntimeException("Java action was not implemented");
        // END USER CODE
    }

    /**
     * Returns a string representation of this action
     * @return a string representation of this action
     */
    @java.lang.Override
    public java.lang.String toString()
    {
        return "Java_action";
    }

    // BEGIN EXTRA CODE
    // END EXTRA CODE
}

answered