CODEWITHSUNDEEP
jstl
Sergio del Amo
Sergio del Amo

Reputation: 78096

JSTL Exception while comparing a string

I have the next code in a JSTL file: 

<c:choose>
    <c:when test="${application.lodging eq 'F'}"><bean:message key="courseapplication.lodgingF"/></c:when>
    <c:when test="${application.lodging eq 'H'}"><bean:message key="courseapplication.lodgingH"/></c:when>
    <c:when test="${application.lodging eq 'B'}"><bean:message key="courseapplication.lodgingB"/></c:when>
</c:choose>

$application.lodging is F but i am getting the next error:

SEVERE: ServletException in '/administration/jsp/applications.jsp': An exception occured trying to convert String "F" to type "java.lang.Long"
org.apache.jasper.JasperException: Exception in JSP: /administration/jsp/applications.jsp:20

17: <h2><a href="application.do?id=${application.id}&amp;type=S">${application.name}</a></h2>
18: <h3>
19: <c:choose>
20:     <c:when test="${application.lodging eq 'F'}"><bean:message key="courseapplication.lodgingF"/></c:when>
21:     <c:when test="${application.lodging eq 'H'}"><bean:message key="courseapplication.lodgingH"/></c:when>
22:     <c:when test="${application.lodging eq 'B'}"><bean:message key="courseapplication.lodgingB"/></c:when>
23: </c:choose>

In my local server with Apache Tomcat 6.0, this code was not giving any problem.

In my apps server with tomcat 5.5 is giving the above error.

Does anyone knows why this can be?

Same happens if I use == instead of eq 

SEVERE: ServletException in '/administration/jsp/applications.jsp': An exception occured trying to convert String "F" to type "java.lang.Long"
org.apache.jasper.JasperException: Exception in JSP: /administration/jsp/applications.jsp:20

17: <h2><a href="application.do?id=${application.id}&amp;type=S">${application.name}</a></h2>
18: <h3>
19: <c:choose>
20:     <c:when test="${application.lodging=='F'}"><bean:message key="courseapplication.lodgingF"/></c:when>
21:     <c:when test="${application.lodging=='H'}"><bean:message key="courseapplication.lodgingH"/></c:when>
22:     <c:when test="${application.lodging=='B'}"><bean:message key="courseapplication.lodgingB"/></c:when>
23: </c:choose>

Upvotes: 1

Views: 4001

Answers (2)

Peter Štibran&#253;
Peter Štibran&#253;

Reputation: 32893

Exception indicates that that application.lodging is number, not string. Is that right? In such case, you might need to convert your 'F', 'H', 'B' strings to numbers first (do you want to compare characters?)

Upvotes: 1

VonC
VonC

Reputation: 1323953

Did you try to use a simple comparison against string, as suggested in this answer ?

<c:when test="${application.lodging=='F'}"><bean:message key="courseapplication.lodgingF"/></c:when>

might work in both environment...

Upvotes: 0

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