maven debug

java

jdb

jdb -classpath xxxx 

mvn

mvn exec:exec -Dexec.executable="java" -Dexec.args="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=1044 test.JVMHook"

http://www.mojohaus.org/exec-maven-plugin/usage.html

scala

jdb

jdb -classpath scala-librarny.jar #需要加入scala的依赖包

sbt

sbt -jvm-debug [prot]