步驟一：項目右鍵 找到并且點選build path 選中 configure build path... The superclass javax.servlet.http.HttpServlet was not found on the Java Build Path 步驟二：Libraies 中 選中 Add library ，從Add Libraries 中選擇 Server Runtime The superclass javax.servlet.http.HttpServlet was not found on the Java Build Path 步驟三：選中對應的 tomcat 版本 finish 即可 The superclass javax.servlet.http.HttpServlet was not found on the Java Build Path
