安装了jdk1.8版本或tomcat8.0版本后运行之前jsp项目报错：org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [45] in the generated java file: [F:\apache-tomcat-8.0.14\work\Catalina\localhost\MoniWeb\org\apache\jsp\jsp\main_jsp.java]
The method getDispatcherType() is undefined for the type HttpServletRequest
