Mercurial > hg > LightPIT / file revision

 /*

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

  *

  * Copyright 2018 Mike Becker. All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions are met:

  *

  *   1. Redistributions of source code must retain the above copyright

  *      notice, this list of conditions and the following disclaimer.

  *

  *   2. Redistributions in binary form must reproduce the above copyright

  *      notice, this list of conditions and the following disclaimer in the

  *      documentation and/or other materials provided with the distribution.

  *

  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE

  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

  * POSSIBILITY OF SUCH DAMAGE.

  *

  */

 package de.uapcore.lightpit.modules;

 import de.uapcore.lightpit.AbstractServlet;

 import de.uapcore.lightpit.HttpMethod;

 import de.uapcore.lightpit.RequestMapping;

 import javax.servlet.ServletException;

 import javax.servlet.annotation.WebServlet;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import java.io.IOException;

 import java.util.Optional;

 @WebServlet(

         name = "ErrorModule",

         urlPatterns = "/error/*"

 )

 public final class ErrorModule extends AbstractServlet {

     public static final String REQ_ATTR_RETURN_LINK = "returnLink";

     @Override

     protected String getResourceBundleName() {

         return "localization.error";

     }

     @RequestMapping(requestPath = "generic", method = HttpMethod.GET)

     public void onError(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

         Optional.ofNullable(req.getHeader("Referer")).ifPresent(

                 referer -> req.setAttribute(REQ_ATTR_RETURN_LINK, referer)

         );

         setStylesheet(req, "error");

         setContentPage(req, "error");

         renderSite(req, resp);

     }

 }