Debugging in maven with mvnDebug command

Question

I read this: Debugging in Maven?

I\'m running intellij remote debug and maven for a service I\'m trying to debug.

I\'m running

mvnDebug tom         


        

Answer 1

Wow, Maven makes this difficult. Setting -Xrunjdwp in MAVEN_OPTS won't work, because mvnDebug.bat adds its own afterward, which will override MAVEN_OPTS. I would copy mvnDebug.bat to myMvnDebug.bat and comment out the line set MAVEN_DEBUG_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000. That way you can set MAVEN_DEBUG_OPT on the command line before running it.

C:\somewhere>set MAVEN_DEBUG_OPT=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8001
C:\somewhere>myMvnDebug.bat

Answer 2

I changed @set MAVEN_DEBUG_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000

to

@set MAVEN_DEBUG_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=%MAVEN_DEBUG_PORT%

in mvnDebug.cmd then either set MAVEN_DEBUG_PORT in env variables or locally with set @set MAVEN_DEBUG_OPTS=8001 before you call mvnDebug xxx:run (I'm using Jetty)