src/main/webapp/WEB-INF/jsp/error.jsp

<%-- 
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Copyright 2021 Mike Becker. All rights reserved.

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<%@page pageEncoding="UTF-8" %>
<%@page import="de.uapcore.lightpit.Constants" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>

<c:set scope="page" var="baseHref" value="${requestScope[Constants.REQ_ATTR_BASE_HREF]}"/>
<c:set scope="page" var="errorCode" value="${requestScope['jakarta.servlet.error.status_code']}"/>
<c:set scope="page" var="returnLink" value="${requestScope[Constants.REQ_ATTR_REFERER]}"/>

<div id="error-page">
    <h1><fmt:message key="error.headline"/></h1>
    <table>
        <tr>
            <th><fmt:message key="error.code"/>:</th>
            <td>${errorCode} - <fmt:message key="error.code.${errorCode}"/></td>
        </tr>
        <tr>
            <th><fmt:message key="error.message"/>:</th>
            <td><c:out value="${requestScope['jakarta.servlet.error.message']}"/></td>
        </tr>
        <tr>
            <th><fmt:message key="error.timestamp"/>:</th>
            <td><fmt:formatDate type="both" value="<%= new java.util.Date()%>"/></td>
        </tr>
        <%--@elvariable id="exception" type="java.lang.Exception"--%>
        <c:if test="${not empty exception}">
            <tr>
                <th><fmt:message key="error.exceptionText"/>:</th>
                <td>${exception['class'].name} - ${exception.message}</td>
            </tr>
        </c:if>
        <c:if test="${fn:startsWith(returnLink, baseHref)}">
            <tr>
                <th><fmt:message key="error.returnLink"/>:</th>
                <td><a href="${returnLink}">${returnLink}</a></td>
            </tr>
        </c:if>
    </table>
</div>