错误：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path
解决方法：选中项目-->右键选中“Build Path”-->Configure Build Path
点击Add Library
点击Next
最后记得Apply一下，然后就OK了
篇一：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path
原文：http://www.cnblogs.com/ldbangel/p/6296060.html