Javax.servlet.jsp.JspException cannot be resolved to a TYPE__JS

Javax.servlet.jsp.PageContext cannot is resolved to a type
javax.servlet.jsp.JspException cannot is resolved to a type

When I first learned jsp,servlet, I knew exactly when to add Servlet-api.jar and Jsp-api.jar,

Now with the Eclipse tool The time is long, the use of the jar details are not noticed unexpectedly forget,

To resolve this exception need to add: Jsp-api.jar in the Libs of the Tomcat installation directory,

Also, if the servlet exception needs to be joined to Servlet-api.jar Tomcat.

----Use tools to make people dull,