关于eclipse新建web项目,提示:"The superclass "javax.servlet.http.HttpServlet" was not found on the Java"解决办法

新建jsp页面老提示：

Multiple annotations found at this line:

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

解决步骤：
1、右键项目-build path

2、选择configure build path...

3、选择 java build path

4、Add Library –> server Runtime -> Click Next

5、选择  Server runtime (我的是 Tomcat 7.0) –>完成