Cannot invoke "javax.tools.JavaCompiler.getStandardFileManager ..." because "compiler" is null about webgoat

[jordithijsman]

Did you rebuild the image after replacing the FROM statement?

[jordithijsman]

This is a legit issue. It is reproducible by running the Docker image.

I suspect the cause is the usage of the docker.io/eclipse-temurin:19-jre-focal base image for the container is to blame. This exercise tries to use JDK functionality which is not included in the JRE. While this is good practice for a secure application since it limits the attack surface, the JDK appears to be a necessity for this exercise.

I tried building the image using docker.io/eclipse-temurin:19-jdk-focal and this appears to fix the issue.

[aolle]

Hello,

I am not able to reproduce the issue.

Just remove the return sentence from your code and submit it to WebGoat to complete the lesson.

Regards.

[jimmyFlash]

Hello @aolle

As i mentioned this issue occurred with the Docker image, i didn't face such issue when i cloned and earlier version of WebGoat straight from GitHub. This is my 1st time using WebGoat docker image from DockerHub

I will remove the return statement form my code as you did and test, not sure this is the cause but hope it work.

I'll attach screens of the error message if I'm still getting the same error.

[jimmyFlash]

This is a legit issue. It is reproducible by running the Docker image.

I suspect the cause is the usage of the docker.io/eclipse-temurin:19-jre-focal base image for the container is to blame. This exercise tries to use JDK functionality which is not included in the JRE. While this is good practice for a secure application since it limits the attack surface, the JDK appears to be a necessity for this exercise.

I tried building the image using docker.io/eclipse-temurin:19-jdk-focal and this appears to fix the issue.

Thank you so much @jordithijsman. The script was simple enough i tried in sample app with with JDK11 and SQLite db and it was working, had a feeling it was docker image but couldn't figure out what exactly should i look for.

[James-Lu-none]

Hello @jordithijsman, i replaced the image with docker.io/eclipse-temurin:19-jdk-focal but it still shows "compiler" is null when i was trying to submit the anwser, do i have to replace something other than the FROM statement in the docker file?

[James-Lu-none]

oh you are right, i am new to docker and i thought it will build the image for me when i do docker run, thank you!