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I tried to deploy my eclipse scout application (framework) on tomcat. I configured the application to http correctly. The server and consequently the UI can't start.

Here's the stacktrace of the exception: 

[33msyscodeapp_1  |[0m Exception in thread "Thread-6" 19-Nov-2016 04:50:49.525 SEVERE [http-apr-8080-exec-4] org.apache.catalina.core.StandardContext.startInternal Context [/org.eclipse.scout.sysmanagement.org.eclipse.scout.sysmanagement.ui.html] startup failed due to previous errors
[33msyscodeapp_1  |[0m java.lang.NullPointerException
[33msyscodeapp_1  |[0m        at org.eclipse.scout.rt.platform.internal.PlatformImplementor.fireStateEvent(PlatformImplementor.java:308)
[33msyscodeapp_1  |[0m        at org.eclipse.scout.rt.platform.internal.PlatformImplementor.changeState(PlatformImplementor.java:284)
[33msyscodeapp_1  |[0m        at org.eclipse.scout.rt.platform.internal.PlatformImplementor.start(PlatformImplementor.java:141)
[33msyscodeapp_1  |[0m        at org.eclipse.scout.rt.platform.internal.PlatformStarter.run(PlatformStarter.java:32)

Any ideas?

PrestigeDev
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    Could you provide some information which Scout version you are using? Maven artifact version for example – Patrick Nov 23 '16 at 11:30
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    Hi Patrick I've now posted the solution to my problem. ¨ – PrestigeDev Nov 23 '16 at 11:50
  • I've seen that you are part of BSI and therefore I want to inform you that you should adapt your eclipse scout beginners guide at point: "2.4.3. Update the Scout Application to work with HTTP". You should mention that one has to adapt the property: "scout.server.url" from https: //localhost:8443/... to http: //localhost:8080/... This wasn't the problem for me, because I noticed it and mapped consequently the server still correctly. – PrestigeDev Nov 23 '16 at 11:57
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    Thanks for the excellent input @PrestigeDev. I committed an update to the documentation which will show up on the next rebuild of the website. Feel free to open issues or send us a Pull Request for the documentation at https://github.com/BSI-Business-Systems-Integration-AG/org.eclipse.scout.docs – Patrick Nov 24 '16 at 08:32
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    The change you suggested should now be visible in the updated documentation. Thank you for helping to make Scout better. – Patrick Dec 14 '16 at 12:06

1 Answers1

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Here's the solution:

Since I was running my tomcat on docker I used the latest available image of tomcat:8.0. After long research I noticed that the JVM version of my tomcat was Java 1.7, but I compiled my project on Java 1.8. That was the reason for the strange errors.

Now deployment works completely fine. I hope that this post helps others not to lose much time anymore for this kind of error.

PrestigeDev
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