升级struts2 2.3.16 报错 BeanCreationException

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'treeMenuDao' defined in ServletContext resource [/WEB-INF/dataAccessContext-local.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.sunyard.zj.dao.ibatis.TreeMenuDaoImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.sunyard.zj.dao.ibatis.TreeMenuDaoImpl]: Constructor threw exception; nested exception is java.lang.NullPointerException
Caused by: java.lang.NullPointerException

原来用的struts2 2.0.11 版本 最近说有漏洞要升级，结果升级了就报错，用的strunts+spring+ibatis. 网上找了好多解决办法都是对于hibernate的。求大神帮忙。