使用Java 8，eclipse luna，tomcat 8和mojarra 2.2.7; 从javax.faces.bean.ManagedBean而不是javax.annotations.ManagedBean导入@ManagedBean后，它就可以正常工作.

using java 8, eclipse luna, tomcat 8 and mojarra 2.2.7; after importing @ManagedBean from javax.faces.bean.ManagedBean instead of javax.annotations.ManagedBean, it works just fine.