Maven工程下报错：The superclass "javax.servlet.http.HttpServlet" was not found on the Java Build Path

Maven工程下，webapp下面新建index.jsp文件，报如下错误。

原因很简单，没有安装如下maven依赖包：

  <dependencies>
       <!-- JSP相关 -->
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jsp-api</artifactId>
        <scope>provided</scope>
    </dependency>
  </dependencies>