springframework Http Status not present

Hi, 

I recently start to learn package my plugin to vCenter, and it worked find.

but when I tried to package a new plugin(with removing some unuseful code) and it broke.

so, I try to revert to work code, but still borke...and I revert to my earlier version still broke...

and it always show with initializBean failed....

[2016-06-08T11:21:20.459+08:00] [ERROR] start-signalling-2            org.springframework.web.servlet.DispatcherServlet                 Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0': Invocation of init method failed; nested exception is java.lang.TypeNotPresentException: Type org.springframework.http.HttpStatus not present

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)

whatever i modify my bundle-context.xml and still not work.

could anyone can help me to get through this problem...?

attachment is my whole error message...