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

在eclipse中新建JSP文件時報：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

如下圖：

解決步驟：

1.項目右鍵選擇Build Path--->>ConfigureBuild Path...

2.點擊add library...-->>Server RunTime...

3.選中一個已存在的服務器（我用的Tomcat），應用即可。