为什么会出现以下错误?“没有定义唯一类型的bean:预期的单个匹配bean，但找到了3”

We use Eclipse Kepler IDE to develop our GWT app and have been using an Ant script to deploy to a Tomcat container for a long time. We recently decided to switch to using a Hudson CI server in order to streamline the GWT compile and deploy process. The problem we are encountering is that when we allow Eclipse to do it's own continuous building, then perform the GWT compile/deploy, our app works as expected. However, when we use an external javac process to compile, whether from a standalone JDK or using Eclipse's compiler (We use Eclipse Kepler IDE to develop our GWT ap