we upgraded our confluence from 5.4.3 to 5.8.4. If I insert the diagram makro, I get the error: "Error rendering macro 'diagramly' : Could not initialize class com.mxgraph.confluence.plugins.macro.DiagramlyMacroUtil" - we use the old version Diagramly Confluence Plugin 2.10.2 - just now I find out while my upgrade process, that this plugin is now called draw.io and cost some money - so I'm not able to update this plugin. Do you have any idea, whats the problem?
Some other errors from the log file:
logs/atlassian-confluence.log: -- referer: http://t1online2v:8090/plugins/servlet/upm | url: /rest/plugins/1.0/com.mxgraph.confluence.plugins.diagramly-key | userName: ykoch
logs/atlassian-confluence.log:2015-07-08 10:45:44,230 ERROR [http-nio-8090-exec-5] [xhtml.view.macro.ViewMacroMarshaller] marshalInternal Error rendering macro: diagramly
OK I solved the problem by deleting the folders bundled-plugins, plugins-cache, plugins-osgi-cache and plugins-temp in my confluence-home ... like on page: https://confluence.atlassian.com/display/CONFKB/How+to+clear+Confluence+plugins+cache
I upgraded our Confluence server from 5.4.3 to 5.8.15 on Nov 8, 2015, and our 2.7.5 Diagramly plugin was still working great. Since that point, our Confluence service was restarted twice - once on 11/11/15 and then on 12/9/15 as a result of OS patches requiring a server restart. And I'm not aware of any other changes to our Confluence instance over that period. The Nov 11th restart resulted in no problems I'm aware of, but after the Dec 9th, our diagramly plugin appeared to stop working.
This discussion thread was the only one I could find that seemed related. I tried the fix that apparently worked for Yvonne (thanks so much for replying back to your own question with that information), but unfortunately it didn't fix it for me.
I tried upgrading from 2.7.5 to 2.10.2, since 2.10.2 seemed to be working for Yvonne against Confluence 5.8x. But I still get the same error.
I may be seeing different errors than Yvonne, but I figured I would include excerpts here in case Yvonne or anyone else has any further ideas:
2015-12-09 11:36:51,396 ERROR [http-nio-8090-exec-10] [mxgraph.confluence.plugins.FileServlet] doGet There was an error loading graph. -- referer: https://wiki.nevo.com/pages/viewpage.action?spaceKey=IRCDACP&title=Requirements | url: /plugins/servlet/diagramly-fileServlet | userName: kledeen java.lang.ExceptionInInitializerError at com.mxgraph.confluence.plugins.FileServlet.doGet(FileServlet.java:155) ... at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.RuntimeException: XPathFactory#newInstance() failed to create an XPathFactory for the default object model: http://java.sun.com/jaxp/xpath/dom with the XPathFactoryConfigurationException: javax.xml.xpath.XPathFactoryConfigurationException: java.util.ServiceConfigurationError: javax.xml.xpath.XPathFactory: Provider org.apache.xpath.jaxp.XPathFactoryImpl not found at javax.xml.xpath.XPathFactory.newInstance(XPathFactory.java:102) at com.mxgraph.confluence.plugins.macro.DiagramlyMacroUtil.<clinit>(DiagramlyMacroUtil.java:75) ... 219 more 2015-12-09 11:36:51,479 ERROR [http-nio-8090-exec-6] [mxgraph.confluence.plugins.FileServlet] doGet There was an error loading graph. -- referer: https://wiki.nevo.com/pages/viewpage.action?spaceKey=IRCDACP&title=Requirements | url: /plugins/servlet/diagramly-fileServlet | userName: kledeen java.lang.NoClassDefFoundError: Could not initialize class com.mxgraph.confluence.plugins.macro.DiagramlyMacroUtil at com.mxgraph.confluence.plugins.FileServlet.doGet(FileServlet.java:155)
The only other post I could find that seemed related was https://java.net/jira/browse/GLASSFISH-21425 which indicates a potential issue between JDK 7 and JDK 8.
I'm trying to decide if the few thousand dollars licensing cost is worth it to jump to the latest version of diagramly/draw.io, which I assume would work (or at least I would have support to try to figure out why not...).
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