问题
After importing a Maven GWT project into Eclipse the debugger doesn't work, complaining that it's
Unable to find ProjectName.gwt.xml on your classpath
How do you fix this error?
回答1:
It turns out that when you debug some GWT project as Web Applications, Eclipse does not append the module name (i.e. the gwt.xml file) to the list of arguments. I tried adding it manually, but forgot to add the complete package name that houses the gwt.xml file. The module should have been referred to as com.company.project.Project.gwt.xml, not just Project.gwt.xml.
回答2:
I found that Davek804's comment helped me: I simply deleted the debug configuration (Run=>Debug Configuration=>right click and deleted project will run
回答3:
Try going to Run -> Run Configurations in the menu and then select the Classpath tab and add the missing project.
来源：https://stackoverflow.com/questions/10746947/unable-to-find-xxx-gwt-xml-on-your-classpath-error-in-gwt