The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path解决方案

上图

The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path
           

项目右击–>build path -->Add libraries–>server runtime–>next

选择tomcat版本–>apply

然后如下图 勾选相应tomcat版本–>apply–>apply and close

ok了！！！

报错消失