The servlets named [UserExit] and [com.fxh.control.UserExit] are both mapped to the url-pattern [/Us

同时匹配到 相同的 url-pattern  ,原因自动生成的 Servlet 3.0 Annotations

去掉代码中的 “  /**
 * Servlet implementation class UserExit
 */
@WebServlet("/UserExit")”

重新启动ｔｏｍｃａｔ　即可

Caused by: java.lang.IllegalArgumentException: The servlets named [ControllerServlet] and [com.classmgt.servlet.ControllerServlet] are both mapped to the url-pattern [/ControllerServlet] which is not permitted

It seems that you have mixed annotation-based and web.xml-based configuration.

I doubt that you created a Servlet using the "Create Servlet" wizard which creates web.xml entry with url-pattern and then , added a @WebServlet annotation which duplicates anything you may put in the web.xml.

Read more: Servlet 3.0 Annotations

问题解答处

http://stackoverflow.com/questions/16270619/java-lang-illegalargumentexception-the-servlets-named-x-and-y-are-both-mapp/16277469