Issue
I am working on a new project which embedded a tomcat with the dependency spring-boot-starter-tomcat:2.5.3 (into vaadin-spring-boot-starter). I am building my project into a .jar, and launching it with "mvn spring-boot:run".
But because of the embedded tomcat, I am unable to use the debug mode with Eclipse.
I have already try to launch a remote debug session, with :
MAVEN_OPTS= -Xmx1024M -XX:MaxPermSize=256M -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8000
Eclipse connects itself well, but breakpoints are not working and it shows me only one thread, without any more informations.
So, do you have any idea how can I make it works ? Thanks you for your time !
Solution
When running application using mvn spring-boot:run you can attach debugger like this:
mvn spring-boot:run -Dspring-boot.run.jvmArguments="-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=*:8000"
By providing spring-boot.run.jvmArguments system property.
Alternatively, you can build application first and then run it using the following command:
java -jar app.jar -Dagentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=*:8000
When you provide debugger configuration using MAVEN_OPTS, the debugger is attached to the Maven process, however, the application is running in a separate Java process without a debugger attached.
Answered By - jumb0jet
Answer Checked By - Cary Denson (JavaFixing Admin)
