📄 demo.jsp
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<%@ page import="javax.servlet.jsp.jstl.core.Config, java.util.*" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<html>
<head>
<title>JSTL: Formatting/I18N Support -- Demo Example</title>
</head>
<body bgcolor="#FFFFFF">
<h3>Demo</h3>
<p>
The following bundles exist in the web application: 'Resources', 'Resources_de', 'Resources_fr', 'Resources_it'.
'Resources' is the 'base' bundle and contains all messages in English. The italian bundle only holds one message
(key=greetingMorning).
</p>
<c:if test="${!empty param.locale}">
<fmt:setLocale value="${param.locale}" scope="page"/>
</c:if>
<c:if test="${!empty param.fallback}">
<% Config.set(request, Config.FMT_FALLBACK_LOCALE, request.getParameter("fallback")); %>
</c:if>
<table>
<tr>
<td><b>Set application-based locale:</b></td>
<td>
<a href='?locale=fr&fallback=<c:out value="${param.fallback}"/>'>French</a> •
<a href='?locale=de&fallback=<c:out value="${param.fallback}"/>'>German</a> •
<a href='?locale=it&fallback=<c:out value="${param.fallback}"/>'>Italian</a> •
<a href='?locale=es&fallback=<c:out value="${param.fallback}"/>'>Spanish (no bundle)</a> •
<a href='?locale=&fallback=<c:out value="${param.fallback}"/>'>None</a>
</td>
</tr>
<tr>
<td align="right"><b>Set fallback locale:</b></td>
<td>
<a href='?locale=<c:out value="${param.locale}"/>&fallback=fr'>French</a> •
<a href='?locale=<c:out value="${param.locale}"/>&fallback=de'>German</a> •
<a href='?locale=<c:out value="${param.locale}"/>&fallback=it'>Italian</a> •
<a href='?locale=<c:out value="${param.locale}"/>&fallback=es'>Spanish (no bundle)</a> •
<a href='?locale=<c:out value="${param.locale}"/>&fallback='>None</a>
</td>
</table>
<p>
Request parameter "locale": <c:out value="${param.locale}"/><br>
<i>(This value is used to set the application based locale for this example)</i>
<p>
Application based locale: <%=Config.find(pageContext, Config.FMT_LOCALE)%><br>
<i>(javax.servlet.jsp.jstl.fmt.locale configuration setting)</i>
<p>
Browser-Based locales:
<%
Enumeration e = request.getLocales();
while (e.hasMoreElements()) {
Locale locale = (Locale)e.nextElement();
out.print(locale);
out.print(" ");
}
%>
<br>
<i>(ServletRequest.getLocales() on the incoming request)</i>
<p>
Fallback locale: <%=Config.find(pageContext, Config.FMT_FALLBACK_LOCALE)%><br>
<i>(javax.servlet.jsp.jstl.fmt.fallbackLocale configuration setting)</i>
<p>
<jsp:useBean id="now" class="java.util.Date" />
<h4>
<fmt:formatDate value="${now}" dateStyle="full"/> •
<fmt:formatDate value="${now}" type="time"/>
</h4>
<p>
<fmt:bundle basename="org.apache.taglibs.standard.examples.i18n.Resources">
<table cellpadding="5" border="1">
<tr>
<th align="left">KEY</th>
<th align="left">VALUE</th>
</tr>
<tr>
<td>greetingMorning</td>
<td><fmt:message key="greetingMorning"/></td>
</tr>
<tr>
<td>greetingEvening</td>
<td><fmt:message key="greetingEvening"/></td>
</tr>
<tr>
<td>currentTime</td>
<td>
<fmt:message key="currentTime">
<fmt:param value="${now}"/>
</fmt:message>
</td>
</tr>
<tr>
<td>serverInfo</td>
<td><fmt:message key="serverInfo"/></td>
</tr>
<tr>
<td>undefinedKey</td>
<td><fmt:message key="undefinedKey"/></td>
</tr>
</table>
</fmt:bundle>
<p>
</body>
</html>
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