新建 jsp异常，The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

　　新项目，新建jsp页面的时候报异常：

Multiple annotations found at this line:
    - The superclass "javax.servlet.http.HttpServlet" was
     not found on the Java Build Path
    - The superclass "javax.servlet.http.HttpServlet" was
     not found on the Java Build Path

　　右击项目 -> Properties -> Java Build Path -> Libraries 选项 -> 点击 Add Library -> Server Runtime

　　选择tomcate -> 完成。

　　如下：

　　再看jsp 页面已经正常了。