Untitled

Servlet: custom 401 page isn't triggered
<error-page>
    <error-code>401</error-code>
    <location>/WEB-INF/exceptions/401.jsp</location>
</error-page>

response.sendError(401, "message here");

<%@page contentType="text/html" pageEncoding="UTF-8" isErrorPage="true"%>
<!DOCTYPE html>
<html>
    ...
    <body>
        <h1>Unauthorized (401)</h1>
        <p><%= exception.getMessage() %></p>
    </body>
</html>