解决jsp页面报- The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

这是因为javax.servlet.http.HttpServlet是tomcat里面的jar包，所以有两种解决办法

一：在项目中添加tomcat服务器

①项目右击-->build path -->Configure Build Path

2Libraries-->add library-->server runtime

解决jsp页面报- The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

3.选择tomcat服务器，点击Finish。

二：直接将该jar包添加到JRE System Library

1、项目右击-->build path -->Configure Build Path

解决jsp页面报- The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

2、选中JRE System Library点击Edit，然后Installed JREs..,接着选中jdk再Edit，然后Add External JARs..

解决jsp页面报- The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path 最后选择tomcat中大的lib包下的servlet-api.jar

解决jsp页面报- The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

接下来就是各种apply 、Finish即可