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tomtom69
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Joined: 09 Nov 2010
Posts: 159
Location: Bavaria

PostPosted: Sun Oct 25, 2015 10:57 am    Post subject: Java/SWT application mozilla/webkit part not working Reply with quote

I have a java application (ERP system that my company uses, however "windows only") which almost works using gentoo and oracle-jre-bin.
However some transaction windows of the application do not show up completely but give errors.
It looks like these application windows use some html/browser functionality for their display. Unfortunately I do not know much about java so I do not really understand what's going wrong here.
The java console gives the following output:

Code:
Caused by: org.eclipse.swt.SWTError: No more handles [Unknown Mozilla path (MOZILLA_FIVE_HOME not set)]
   at org.eclipse.swt.SWT.error(Unknown Source)
   at org.eclipse.swt.browser.Mozilla.initMozilla(Unknown Source)
   at org.eclipse.swt.browser.Mozilla.create(Unknown Source)
   at org.eclipse.swt.browser.Browser.<init>(Unknown Source)
   at chrriis.dj.nativeswing.swtimpl.components.core.NativeWebBrowser.createControl(NativeWebBrowser.java:431)
   ... 25 more


Some keyword searches make me believe that there is some swt part of the application that use webkit or mozilla.
First try was to include "export MOZILLA_FIVE_HOME=/usr/lib64/firefox" before the application launch. This causes the errors to change to the following:

Code:
Caused by: org.eclipse.swt.SWTError: No more handles [MOZILLA_FIVE_HOME='/usr/lib64/firefox'] (java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
   no swt-mozilla-gtk-3738 in java.library.path
   no swt-mozilla-gtk in java.library.path
   /home/tom/.swt/lib/linux/x86_64/libswt-mozilla-gtk-3738.so: libxpcom.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden
   Can't load library: /home/tom/.swt/lib/linux/x86_64/libswt-mozilla-gtk.so
)
   at org.eclipse.swt.SWT.error(Unknown Source)
   at org.eclipse.swt.browser.Mozilla.initMozilla(Unknown Source)
   at org.eclipse.swt.browser.Mozilla.create(Unknown Source)
   at org.eclipse.swt.browser.Browser.<init>(Unknown Source)
   at chrriis.dj.nativeswing.swtimpl.components.core.NativeWebBrowser.createControl(NativeWebBrowser.java:431)
   ... 25 more
Caused by: java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
   no swt-mozilla-gtk-3738 in java.library.path
   no swt-mozilla-gtk in java.library.path
   /home/tom/.swt/lib/linux/x86_64/libswt-mozilla-gtk-3738.so: libxpcom.so: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden
   Can't load library: /home/tom/.swt/lib/linux/x86_64/libswt-mozilla-gtk.so

   at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
   at org.eclipse.swt.internal.Library.loadLibrary(Unknown Source)
   ... 29 more


I tried also to emerge webkit-gtk, because this is often mentioned to be the default browser engine for Java, and some forum entries I found mention that the libxpcom.so is an old netscape library that is not supported any more, but without success.

Any hint how to get this working?
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