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

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

这个报错的原因是缺少Jar包

项目上单击鼠标右键》Build Path》Configure Build Path

点击libraries中的 ADD Library>

Server Runtime>next >

Apache tomcat v7.0 >finish 即可

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原文地址：https://www.cnblogs.com/j-liu3323/p/6518803.html