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

新手刚建jsp的时候通常都会遇到这样的一个错误
Multiple annotations found at this line:
- 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

这是没把服务器加到项目中的结果

我们可以选中项目------>>>右击–>build path---->>configure build path
出现这个界面，如图操作

选中server runtime，选择自己安装好的Tomcat服务器即可