JavaWeb:报错信息The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

JavaWeb: 报错信息The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

1、右击web工程-》属性或Build Path-》Java Build Path->Libraries-> Add Libray...->Server Runtime -》Tomcat Server
2、切换到Java Build Path界面中的Orader and Export,选择Tomcat。
 
注意:
按以上方法操作时,若打开Server Runtime后一片空白,需要设置Apache服务器。设置方法为:window->Preferences->Server->Runtime Environment -> add --> 选择Apache的版本后点Next,再填入你apache服务器软件的安装(解压后)地址。
原文地址:https://www.cnblogs.com/zhengrui/p/5672595.html