How to make the debugging in playframework in IntelliJ Idea

If its a play project, from the command line :

play debug

If its a SBT play project from the command line :

 sbt -jvm-debug 9999 run

debug port is 9999 by default

now create a remote configuration

in IntelliJ :

Go to "edit run configurations"

Create a new remote configuration (port 9999, all other details leave with default values)

run the new debug configuration (don't forget to put a break point)

Most convenient way to run/debug applications in intellij IDEA is the following.

Menu command: Run -> Edit Configuration!

Add new configuration -> Application

Then fill up the fields:

Main class:

play.server.Server

VM Parameters:

-Dapplication.path=.

You should have something similar:

If you did it correctly, then you can run and stop your app right from IDE

EDIT for Play! 2

Play 2 has good documentation for debugging. So go read it. But if you want to investigate run/debug buttons method - read further.

It is different for Play 2.

Settings:

Main class:

play.core.server.NettyServer or play.core.server.ProdServerStart

VM Parameters:

-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=9999 -Dapplication.path=.

You still can debug your application by pressing debug button but I have not figured out some issues:

• It always starts in PROD mode, so you can't make hot code changes.

• RUNNING_PID. There is an error when you restart your debugging session saying that you have to delete this file.

In Play 2, simply do the following:

• From the shell, run play debug
• You'll be dropped into the debug console. Type run and hit enter.
• Then create a Remote configuration in IntelliJ IDEA set up for "localhost" and 9999.
• Start the new configuration