Tapestry 5 with Run Jetty Run

I'm currently going through the Tapestry 5 tutorial and am quite impressed. However, the tutorial is a bit out of date and recommends using the Jetty Launcher Eclipse plug-in to launch Jetty and to only use Jetty 5 as Jetty Launcher does not support Jetty 6.

I could not get Jetty Launcher to work at all under Eclipse 3.4 (Ganymede) on Ubuntu Linux. The Jetty Launcher page notes that it is no longer being maintained and recommends trying Run Jetty Run.

After installing Run Jetty Run, everything seemed to be copacetic with class changes being loaded live without a server restart. That is, everything was OK until beaneditform component was added. At that point, the app bombed with:

Error obtaining injected value for field org.apache.tapestry5.corelib.components.Form.logger: java.lang.ClassNotFoundException: org.slf4j.Logger

Some googling led me to: Tapestry5HowToSetupEclipseRunJettyRun.

I could not really follow the directions about adding -Dorg.mortbay.jetty.webapp.parentLoaderPriority=true to the VM arguments for the launch configuration.

Finally I was able to get this to work by adding -Dorg.mortbay.jetty.webapp.parentLoaderPriority=true to the default JRE's VM arguments.

Go to Window -> Preferences -> Installed JREs. Select the default JRE and click the Edit button. Paste -Dorg.mortbay.jetty.webapp.parentLoaderPriority=true into the Default VM Arguments field and click the Finish button.