There seems to be an issue if you want to launch a playN/GWT/maven app from eclipse in production mode using the following procedure:
Right click on playn-showcase-html and select Goolge-GWT Compile
Compiling module playn.showcase.Showcase
Found type 'com.google.gwt.validation.client.constraints.AbstractDecimalMaxValidator'
Found type 'javax.validation.constraints.DecimalMax'
[WARN] Detected warnings related to 'javax.validation.Constraint'. Is validation-<version>.jar on the classpath?
Specify -logLevel DEBUG to see all errors.
[WARN] Ignoring unresolvable annotation type javax.validation.Constraint
Compiling 1 permutation
Compiling permutation 0...
Compile of permutations succeeded
Linking into /Users/bryan/dev/playn-samples/showcase/html/target/playn-showcase-html-1.0-SNAPSHOT/showcase
Compilation succeeded -- 19.459s
Anyone know what these warnings are about?
Right click on playn-showcase-html and select Run As web application
Go to URL http://127.0.0.1:8888/Showcase.html in your browser and you'll get an error that says
GWT module 'showcase' may need to be (re)compiled.
The only way around this appears to be if you swap steps 1 & 2, but that just seems backwards. I think the problem is that the when you run the web app from eclipse that the gwt maven plugin is compiling/deploying the artifacts again which step on your previous GWT compile step.
Anyways, this isn't a huge deal since you can reverse the order of steps to get it to work, but I was just curious if anyone has found a solution to this.
I suggest that you try to compile/run it with maven directly, not through Eclipse, first go to the root directory of your game and do the following:
mvn clean package
that should compile your game without problems, and then
mvn test -Ptest-html
and that should run your game in http://localhost:8080/
Hope this helps, and I strongly suggest that use maven directly whenever you can, because Eclipse has a lot of incompatibility problems with some things.