Jacek Laskowski wrote:
Does anyone know what the following snippet does and why it doesn't work
on Geronimo/Jetty? When I've uncommented the code within <%-- --%>, the
page where you can place an order works, otherwise it does not. How
could I pinpoint the root cause?
<c:forEach var="item" items="${pageResults.list}">
<tr>
<td class="petstore_listing">
<c:url value="/item.screen" var="viewItemURL">
<c:param name="item_id" value="${item.itemId}"/>
</c:url>
<a href='<c:out value="${viewItemURL}"/>'>
<%--
<c:out value="${item.attribute}" />
--%>
I found the root cause, but did not a solution. It fails on Tomcat 5.5.9
(no Geronimo), too. When Item class (represented as the item variable,
above) has two public methods - getAttribute() and getAttribute(int),
Tomcat (and Jetty in Geronimo, which I think boils down to saying that
it's Jasper or standard jstl impl, actually) prints out the following
error message:
javax.servlet.jsp.el.ELException: Unable to find a value for "attribute"
in object of class "coreout.Item" using operator "."
org.apache.commons.el.Logger.logError(Logger.java:481)
org.apache.commons.el.Logger.logError(Logger.java:498)
org.apache.commons.el.Logger.logError(Logger.java:611)
org.apache.commons.el.ArraySuffix.evaluate(ArraySuffix.java:340)
org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
org.apache.commons.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:263)
org.apache.commons.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorImpl.java:190)
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:922)
org.apache.jsp.index_jsp._jspx_meth_c_out_0(index_jsp.java:160)
org.apache.jsp.index_jsp._jspx_meth_c_forEach_0(index_jsp.java:129)
org.apache.jsp.index_jsp._jspService(index_jsp.java:79)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:291)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
When I remove the overloaded method with the int input argument, it
works. How can I work it around? I wonder how it works on other
application servers.
It seems it's not me who experiences the problem. I saw threads
mentioning the same issue while deploying PetStore onto SJES and JBoss,
e.g. http://forums.java.sun.com/thread.jspa?threadID=642376&tstart=120.
Jacek
