The superclass javax.servlet.http.HttpServlet was not found on the Java Build Path
用Eclipse进行Javaweb开发时，出现这样的错误：Thesuperclassjavax.servlet.http.HttpServletwasnotfoundontheJavaBuildPath。Javaweb工程类中没有添加Tomcat运行时相关类导致。解决方法：右击有错误提示的文件夹，点击”配置构建路径“，如下：再点击”添加库“AddLibrary，如下：选中上图中标出的选项“Serv