javax.servlet.ServletException: Cannot find message resources under

javax.servlet.ServletException: Cannot find message resources under key org.apache.struts.action.MES

javax.servlet.ServletException: Cannot find message resources under key org.apache.struts.action.MESSAGE
  谁能告诉我是怎么回事

------解决方法--------------------------------------------------------
1.资源文件里没有某个属性,但struts里面用了.看看是否笔误
  2.资源文件是否确实存在与classes下面?
------解决方法--------------------------------------------------------
检查下,struts-config.xml文件中是否有这一段呢
 
  <message-resources parameter="ApplicationResources" />
 
  然后CLASS目录下,是否有与之对应的,ApplicationResources.properties文件,并且看下文件中键值列是拼写是否正确,