"javax.servlet.---------->http.HttpServlet" was not found

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

Build Path

如果出现此提示，则可能是tomcat没有配置。

选中项目，右键---------->Build Path

                         ---------->Configure Build Path...

                         ---------->Add Library

                         ---------->Server Runtime

                         ---------->Next(Apache Tomcat)