Saturday, February 05, 2011

Debug maven application with jetty plugin

Have the jetty plugin configured.
<connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">

After that It’s time to configure eclipse for debugging the web app by selecting the Run > Debug … from the menu
# Set Main Class to "org.codehaus.classworlds.Launcher"

Go to the argument tab:
# Set Program arguments to "jetty:run"
# Set VM arguments to "-Xmx512M -Dclassworlds.conf=[MAVEN_HOME]/bin/m2.conf -Dmaven.home=[MAVEN_HOME]"
(Replace MAVEN_HOME with the location of maven on your system)

Go to the classpath tab:
# remove the application from the user entries
# add the "[MAVEN_HOME]/lib/classworlds.jar" to the user entries. in case if the classworlds.jar have version number in the name, please include. Essentially we need to add the correct jar to the classpath

Go to the source tab:
# add the current project to debug

Now you can start debugging your application like you do it always

It is very interesting to set the –o option to the maven command in order to accelerate the fix/debug process.