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

在Eclipse中导入Maven Web Project后所有的都没有问题，唯独jsp文件一直报错：The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path，最后找到的解决办法如下：

在Runtime 选项卡，勾上你所配置的Tomcat，点击OK，错误就不见啦！

参考资料：
http://stackoverflow.com/questions/22756153/the-superclass-javax-servlet-http-httpservlet-was-not-found-on-the-java-build