Struts 二 capabilities can only be added to JEE 5 web projects
Struts 2 capabilities can only be added to JEE 5 web projects创建工程的时候把 J2EE Specification le
Struts 2 capabilities can only be added to JEE 5 web projects
创建工程的时候把 J2EE Specification level选择为Java EE 5.0就OK.