I have the following Maven project estruture: Example -Persistence -GWTApp The persistence has the

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Asked: June 2, 20262026-06-02T04:30:28+00:00 2026-06-02T04:30:28+00:00

I have the following Maven project estruture: Example -Persistence -GWTApp The persistence has the

0

I have the following Maven project estruture:

Example
-Persistence
-GWTApp

The persistence has the persistence.xml in src/main/resources/META-INF, and it works fine in unitary tests.

I need to use it in the GWTApp project. So, I add it as depency. like this:

<dependency>
    <groupId>com.example</groupId>
    <artifactId>Persistence</artifactId>
    <version>0.0.1</version>
</dependency>

With this, I can see and use the persistence classes in my webapp, but, when I run the webproject in eclipse, I got this error:

javax.persistence.PersistenceException: No Persistence provider for EntityManager named exemplo

I think that’s because eclipse done this “link” between projects referencing the persistence project in webapp project, instead of using a jar file. Maybe I’m wrong, it’s just a guess.

Someone knew how can I fix this?
Thanks in advance.

EDIT

I do more tests, and now I believe thats problem is something just with GWT dev mode and JPA, or something.
I tried to manually copy persistence.xml to weapp/META-INF and to target/project-webapp-0.0.1-SNAPSHOT/META-INF and the error persist.

Any idea?