1 /* |
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 * |
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4 * Copyright 2021 Mike Becker. All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions are met: |
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8 * |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in the |
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14 * documentation and/or other materials provided with the distribution. |
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15 * |
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 * POSSIBILITY OF SUCH DAMAGE. |
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27 * |
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28 */ |
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29 package de.uapcore.lightpit.modules; |
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30 |
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31 import de.uapcore.lightpit.AbstractServlet; |
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32 import de.uapcore.lightpit.HttpMethod; |
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33 import de.uapcore.lightpit.RequestMapping; |
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34 |
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35 import javax.servlet.ServletException; |
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36 import javax.servlet.annotation.WebServlet; |
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37 import javax.servlet.http.HttpServletRequest; |
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38 import javax.servlet.http.HttpServletResponse; |
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39 import java.io.IOException; |
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40 import java.util.Optional; |
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41 |
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42 @WebServlet( |
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43 name = "ErrorModule", |
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44 urlPatterns = "/error/*" |
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45 ) |
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46 public final class ErrorModule extends AbstractServlet { |
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47 |
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48 public static final String REQ_ATTR_RETURN_LINK = "returnLink"; |
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49 |
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50 @RequestMapping(requestPath = "generic", method = HttpMethod.GET) |
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51 public void onError(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { |
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52 Optional.ofNullable(req.getHeader("Referer")).ifPresent( |
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53 referer -> req.setAttribute(REQ_ATTR_RETURN_LINK, referer) |
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54 ); |
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55 |
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56 setStylesheet(req, "error"); |
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57 setContentPage(req, "error"); |
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58 |
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59 renderSite(req, resp); |
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60 } |
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61 } |
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