Maven install works but Intellij's build does not

Question

I have the following problem with a multi module maven project:

The project was initially created in Eclipse and can be compiled and run there. It also can be built with mvn install .

Now when I import the project into Intellij using the following import options the parent pom.xml is recognized and the project and its modules are imported.

Everything looks fine, but when I try to compile it, one class, that has a class from another module as a dependency, cannot be found.

I tried a lot of solutions and the ONLY one that worked for me is the outdated maven idea plugin mvn idea:idea as suggested in this thread. Now every time something in any of the projects poms changes, I have to rerun mvn idea:idea and hope that it works - otherwise I have to import the whole project again.

What am I doing wrong in the import process? Why does mvn install on the command line work, but building the project in Intellij does not?

Answer 1

Try to clear the Intellj Cache once by going to File -> Invalidate Caches/Restart click it. You will get an options, In there select Invalidate and Restart.

Re-import the maven project and compile again it should work.