src/main/java/de/uapcore/lightpit/modules/ErrorModule.java

Wed, 13 May 2020 21:46:26 +0200

author
Mike Becker <universe@uap-core.de>
date
Wed, 13 May 2020 21:46:26 +0200
changeset 46
1574965c7dc7
parent 45
cc7f082c5ef3
child 53
6a8498291606
permissions
-rw-r--r--

fixes error pages and adds referer link to error page if it comes from the application

universe@1 1 /*
universe@1 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
universe@34 3 *
universe@24 4 * Copyright 2018 Mike Becker. All rights reserved.
universe@34 5 *
universe@1 6 * Redistribution and use in source and binary forms, with or without
universe@1 7 * modification, are permitted provided that the following conditions are met:
universe@1 8 *
universe@1 9 * 1. Redistributions of source code must retain the above copyright
universe@1 10 * notice, this list of conditions and the following disclaimer.
universe@1 11 *
universe@1 12 * 2. Redistributions in binary form must reproduce the above copyright
universe@1 13 * notice, this list of conditions and the following disclaimer in the
universe@1 14 * documentation and/or other materials provided with the distribution.
universe@1 15 *
universe@1 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
universe@1 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
universe@1 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
universe@1 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
universe@1 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
universe@1 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
universe@1 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
universe@1 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
universe@1 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
universe@1 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
universe@1 26 * POSSIBILITY OF SUCH DAMAGE.
universe@34 27 *
universe@1 28 */
universe@7 29 package de.uapcore.lightpit.modules;
universe@1 30
universe@34 31 import de.uapcore.lightpit.*;
universe@34 32
universe@6 33 import javax.servlet.annotation.WebServlet;
universe@12 34 import javax.servlet.http.HttpServletRequest;
universe@46 35 import java.util.Optional;
universe@1 36
universe@6 37 /**
universe@6 38 * Entry point for the application.
universe@6 39 */
universe@7 40 @LightPITModule(
universe@29 41 bundleBaseName = "localization.error",
universe@18 42 modulePath = "error",
universe@20 43 titleKey = "title",
universe@20 44 systemModule = true
universe@7 45 )
universe@6 46 @WebServlet(
universe@18 47 name = "ErrorModule",
universe@18 48 urlPatterns = "/error/*"
universe@6 49 )
universe@18 50 public final class ErrorModule extends AbstractLightPITServlet {
universe@34 51
universe@18 52 public static final String REQ_ATTR_ERROR_CODE = "errorCode";
universe@46 53 public static final String REQ_ATTR_RETURN_LINK = "returnLink";
universe@34 54
universe@40 55 private ResponseType handle(HttpServletRequest req, int sc) {
universe@34 56
universe@18 57 req.setAttribute(REQ_ATTR_ERROR_CODE, sc);
universe@46 58
universe@46 59 Optional.ofNullable(req.getHeader("Referer")).ifPresent(
universe@46 60 referer -> req.setAttribute(REQ_ATTR_RETURN_LINK, referer)
universe@46 61 );
universe@46 62
universe@18 63 setStylesheet(req, "error");
universe@18 64 setDynamicFragment(req, "error");
universe@34 65
universe@43 66 return ResponseType.HTML;
universe@12 67 }
universe@34 68
universe@45 69 @RequestMapping(requestPath = "404.html", method = HttpMethod.GET)
universe@42 70 public ResponseType handle404(HttpServletRequest req) {
universe@40 71 return handle(req, 404);
universe@18 72 }
universe@34 73
universe@45 74 @RequestMapping(requestPath = "403.html", method = HttpMethod.GET)
universe@42 75 public ResponseType handle403(HttpServletRequest req) {
universe@40 76 return handle(req, 403);
universe@18 77 }
universe@34 78
universe@45 79 @RequestMapping(requestPath = "500.html", method = HttpMethod.GET)
universe@42 80 public ResponseType handle500(HttpServletRequest req) {
universe@40 81 return handle(req, 500);
universe@18 82 }
universe@1 83 }

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