Java错误:The superclass "javax.servlet.http.HttpServlet" was not found on the Java

很久没写代码,今天新建了一个项目,在创建jsp后发现这个错误

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

后来看了一下,原来是没有添加Tomcat的运行时导致的,

 

在网上搜索了一下解决办法如下:

1. 右键web项目->Build Path->Add Libraries->Server Runtime->Tomcat Server
2. 切换到java Build Path界面中的Orader and Export,选择Tomcat