Object passed via jsp:param throws javax.el.PropertyNotFoundException: Property 'foo' not found on type java.lang.String

Question

I know this might be silly question and i tried googling but didnt got perfect answer.

I am using following code

Answer 1

HTTP request parameters are treated as strings. With jsp:param it's basically been converted to string by String#valueOf(). Rather store it as object in the request scope with help of <c:set>.

<c:forEach var="aggregatedBatchProgressMetrics" items="${batchProgressMetricsList}">  
    <c:set var="batchProgressMetrics" value="${aggregatedBatchProgressMetrics}" scope="request" />
    <jsp:include page="html/tableContentsDisplayer.jsp" />  
</c:forEach>

---

<tr>  
    <td class="tdcenter">${batchProgressMetrics["clientId"]}</td>    
    <td class="tdcenter">${batchProgressMetrics["instrumentStats"]["totalImntsCompleted"]}</td>  
    <td class="tdcenter">${batchProgressMetrics["instrumentStats"]["totalImntsRemaining"]}</td>
</tr>