This might help: its a different solution to the issue Craig dealt with. Its an extension of the gwt multi-module sample with an embedded Jetty, for Java 11 without Spring. https://github.com/timmacp/AppEngineGwt/tree/main
On Wednesday, June 12, 2024 at 9:03:01 AM UTC+1 Wejden Mrabti wrote: > hello! > @Craig it looks great what you have done! > @bob I am working on same migration acutally, It looks that the embedded > Jetty in GWT DevMode has been deprecated in GWT 2.11 due to classloader > issues and other complexities. To avoid these problems, you can try > transition to a dedicated servlet container like Jetty or Tomcat for both > development and production. You can deploy your war file using Docker or a > Maven plugin. Ensure that your development environment is set up to deploy > to this dedicated servlet container instead of using the embedded Jetty. > You can check the updated GWT Getting Started Guide ( > https://www.gwtproject.org/gettingstarted-v2.html )for detailed > instructions on setting up your project and development environment, making > the transition from Java 8 to Java 17 smoother. > > Le mercredi 12 juin 2024 à 02:27:57 UTC+2, Craig Mitchell a écrit : > >> I would recommend creating a new project with everything that you want to >> use, get it working how you like, then use that as a template on how you >> will upgrade your existing project. >> >> For my project that I needed to upgrade from Java 8 to Java 17 (because >> Google App Engine dropped support for Java 8). I decided I would go >> "all-in" and get it onto the latest of everything. So I needed to switch >> to use Maven, switch to use a client/server/shared structure, switch to use >> my own server (I went with Undertow), and switch to use Jakarta. I also >> decided to go with Spring Boot (as Google App Engine had examples for >> that), so I used >> https://github.com/NaluKit/gwt-maven-springboot-archetype to create a >> sample project, and used that as a guide on how to upgrade my existing >> project. Oh, and I also switched from Eclipse to IntelliJ. >> >> It was a big job and a lot of work, but now everything is running >> beautifully, so worth it in the long run. >> >> On Wednesday 12 June 2024 at 8:01:47 am UTC+10 Bob Lacatena wrote: >> >>> I am wrestling with a massive effort that has been one stumbling block >>> after another. The core task is to convert a sadly monolithic and archaic >>> app from Java 8 to Java 17. >>> >>> My current subtask (maybe necessary, maybe not) is to convert everything >>> to use jakarta.servlet rather than javax.servlet, but when I try to declare >>> an import of com.google.gwt.user.server.rpc.jakarta.RemoteServiceServlet, >>> Eclipse just keeps replacing it with the "original" (non-jakarta) path. >>> >>> I was hoping I could solve this by renaming the gwt-servlet-jakarta.jar >>> file as gwt-servlet.jar, and putting that in war/WEB-INF/lib, but it >>> doesn't change the Eclipse behavior, AND it originally generated an error >>> that the size of that jar did not match the SDK... but after a clean-build >>> that problem (at least) went away. >>> >>> But my underlying problem is that I have classes that need to extend the >>> RemoteServiceServlet, and access the associated ServletContext, >>> HttpServletRequest, SerializationException and other classes that must all >>> be the jakarta (not javax) versions. >>> >>> I can go back to using javax (and I'm not at all certain that the >>> Eclipse embedded Jatty server will use jakarta instead of javax, so maybe >>> jakarta won't work locally anyway)... but then I have to solve a problem >>> where GWT dev mode (with javax) gives me: >>> >>> Error occurred during initialization of boot layer >>> java.lang.module.FindException: Module gwt.user not found, required by >>> com.xxxxx.myapp >>> >>> Or do I have to move into a world where I stop using the so-convenient >>> embedded Jetty and deploy to and run an external server? >>> >>> Any advice on what to do (or, preferably, a deeper understanding of what >>> is happening) would be greatly appreciated. >>> >> -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit/960a7bb5-7443-4e97-94e7-3c8b822f4afan%40googlegroups.com.
