I recently had to upgrade a project from GWT 2.6.0 to GWT 2.8.2, while, at the same time, the project migrated from Java 6 to Java 8, including a new version of the IDE, namely Eclipse Oxygen.
For developing, we start the Super Dev Mode via an Ant script, which opens the window where one can click on "Launch default browser" to open the GWT app.
Unfortunately, upon opening the GWT app (clicking on the "Launch default browser" button), I'm facing the following exception (shown in the console and within the browser):
Now, I found some posts about this problem:
- https://github.com/tbroyer/gwt-maven-plugin/issues/65 ("GWT Eclipse Plugin Running DevMode throws the famous jetty exception. #65")
- https://github.com/gwtproject/gwt/issues/9343 ("Jetty Exception Provider org.eclipse.jetty.apache.jsp.JuliLog not a subtype #9343")
But neither of those were of help for me - maybe because I'm lacking some experience with GWT and Java web apps in general.
The part of the Ant script to start the Super Dev Mode looks like this:
After the dev mode GUI window has been closed, I print the used classpath via <echo>, which is:
There are quite a few libraries in the "WEB-INF/lib" directory, which the GWT app needs:
In Eclipse, using the "Open Type" dialog, I can only find one "org.apache.juli.logging.Log" and only one "org.eclipse.jetty.apache.jsp.JuliLog", both are included in "gwt-dev.jar".
I'm currently stuck and do not know how to proceed from here.
Any advice is much appreciated !
Thanks a lot in advance
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