The method getJspApplicationContext(ServletContext) is undefined for the type Js

jdk和tomcat都换成了1.8和8.0。结果高度老项目的时候报如下错误：

The method getJspApplicationContext(ServletContext) is undefined for the type JspFactory

The method getDispatcherType() is undefined for the type HttpServletRequest

我的解决方法：

删除俩与tomcat8.0重复的jar包：
servlet-2.3jar 和 javassist-3.7.ga.jar