Servlet-api-2.5.jar-jar not loaded

Since the package is duplicated, remove the Servlet-api-2.5.jar from the Post project and do not clean the project and restart the server directly. Because the package in the project is preferred and the actual use requires a package in Tomcat, the direct-in page is reported org.apache.jasper.JasperException:Unable to compile class for JSP

Delete D:\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\jeewx\WEB-INF\lib\ Servlet-api-2.5.jar, if you can delete it directly in the project, you can delete it without going to post, if the item cannot be deleted, it can only be deleted every time after the post is published, not clean.

Servlet-api-2.5.jar-jar not loaded