Setting debug configuration for maven+jetty+eclipse

Question

I have created a web app using maven in eclipse. I am using jetty for running the app. I am able to run the app using the maven jetty plugin. But I am facing difficulty while debugging the app - The steps that i have followed to setup debug settings are from the below link http://www.clickonchris.com/2010/05/configuring-jetty-maven-and-eclipse-together-with-hot-deploy/

I can run the app at port 8080 and it keeps on Listening for transport dt_socket at address: 4000. For debugging i have given port 4000. But when i start the debugger in eclipse it gives me a window with following error - "Failed to connect to remote VM. Connection refused. Connection refused: connect" Can some one help me out in resolving this issue for debugging the app.

Thanks!!!

Inseminate

Issue resolved....all the steps given in the above mentioned links are working well...i faced issues because after starting the debugger i got the error message as port 4000 was already in use... – Inseminate

Answer 1

Set MAVEN_OPTS using -

export MAVEN_OPTS="-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n"

Then start jetty using -

mvn jetty:run

Start remote debugging from your fav IDE on port 8000

Sevastopol

should be mvn jetty:run – Katlaps

or simply mvnDebug jetty:run – Encapsulate

Answer 2

Here's a quick workaround. I was battling with this problem also and after a while I achieved a lazy solution.

I use Eclipse Indigo with m2eclipse. I created a new Run Configuration: Right-Clicked the project in Project Explorer -> Run As... -> maven build. Then I defined the necessary maven commands/goals to run the project with jetty straight from Eclipse.

Finally I just ran the newly created configuration in Debug mode and got debug working. This probably messes up something else(?) but works as a quick workaround.

Chapbook

Whoops sorry, I realized just now it was already resolved. I should buy new glasses. – Chapbook

hey its ok...got chance to know about your work around thanks! – Inseminate

Answer 3

As suggested by h3xstream in one of the comments, you can run using mvnDebug jetty:run.

Bowers

Answer 4

As mentioned by Pascal Thivent in this answer, since Maven 2.0.8 one can use mvnDebug in the following way:

mvnDebug jetty:run

This will start maven in debugger mode on port 8000.

Hotbox