I follow this tutorial: http://software.danielwatrous.com/wordpress-plugin-licensing-wicket-on-google-app-engine/. I add google app engine library to this project and then I
You may want to take a look at the Maven GAE Plugin This plugin has goals to run, debug, deploy, etc. your GAE application.
On my computer with Ubuntu 12.04 and Eclipse Juno SR1 I just move all maven dependencies to the button of the list of Java build path.
For open Java build path window right click on the project - preferences - Java build path - Order and Export - select all row with M2_REPO(or some thing else) and press button "Bottom" - Refresh project. This need help.
Thank you!
Possible solution is that, you should add appengine through app engine settings in eclipse and make sure that the sdk added by appengine setting appear before the one mentioned (i.e. /home/hudi/program/git/tournamenSystem/tournament-system/tournament-system-web/src/main/webapp/WEB-INF/lib/appengine-api-1.0-sdk-1.7.1.jar) in your build path. In this way your application would refer the appengine sdk from google plugin and not for the path which is giving error.
I had same issue where I was getting error for the sdk jar included from maven dependency.Hope it will help.