How do you check the browser's user agent in a JSP page using JSTL, EL?

Question

I need to check the browser's user-agent to see if it is IE6. However I shouldn't use scriptlets (we have a strict no scriptlets policy) to do this.

Currently I use

<%
String ua = request.getHeader( "User-Agent" );
boolean isMSIE = ( ua != null && ua.indexOf( "MSIE" ) != -1 );
%>

<% if( isMSIE ){ %>
<div>
<% } %>

What is the cleanest way to do this using JSTL, EL, etc and not scriptlets?

score 25 · Accepted Answer · answered Jun 09 '09 at 08:22

25

<c:set var="browser" value="${header['User-Agent']}" scope="session"/>

answered Jun 09 '09 at 08:22

laginimaineb

8,245
1
22
14

score 21 · Answer 2 · edited Oct 07 '09 at 12:02

21

<c:if test="${fn:contains(header['User-Agent'],'MSIE')}"></c:if>

edited Oct 07 '09 at 12:02

Welbog

59,154
9
110
123

answered Oct 07 '09 at 11:57

Zoltan

211
2
2

– Zoltan Oct 07 '09 at 11:58
Zoltan, you need to add four spaces to the beginning of code so that it's displayed properly. – Welbog Oct 07 '09 at 12:03

score 2 · Answer 3 · answered Oct 01 '15 at 15:21

If you are using spring-mobile framework you can use following to check device type

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 
    <c:choose> 
        <c:when test="${currentDevice.normal}"><p>"Welcome desktop user"</p> </c:when>
        <c:when test="${currentDevice.mobile}"><p>"Welcome mobile user"</p>  </c:when>
        <c:when test="${currentDevice.tab}"><p>"Welcome tab user"</p> </c:when>
    </c:choose>

How do you check the browser's user agent in a JSP page using JSTL, EL?

3 Answers3

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