Question

In my jsp page I am specifying:

<c:choose>
line 1: <c:when test="${com.community_classification_id.contains('1')}">
            <input type="checkbox" id="by_invitation1"   name="invitaion" value="1" checked="true">By Invitation<span style="padding-left:28px"></span>
        </c:when>
        <c:otherwise>
            <input type="checkbox" id="by_invitation1"   name="invitaion" value="1">By Invitation<span style="padding-left:28px"></span>
        </c:otherwise>
</c:choose>

but @line no. 1 it gives me 500 error with

The function contains must be used with a prefix when a default namespace is not specified

I am not able to understand it. What is wrong?

Answer 1

Check this out: JSTL fn:contains() function

Used to find a String inside another one (I guess this is you are trying to achieve)

In your code:

<c:choose>
    <c:when test="${fn:contains(com.community_classification_id, '1')}">
        <input type="checkbox" id="by_invitation1" name="invitaion" value="1" checked="true">By Invitation<span style="padding-left:28px"></span>
    </c:when>
    <c:otherwise>
        <input type="checkbox" id="by_invitation1" name="invitaion" value="1">By Invitation<span style="padding-left:28px"></span>
    </c:otherwise>
</c:choose>

Don’t forget to include the taglib in your JSP to use it:

<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>