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01.22.2008 at 07:13AM PST, ID: 23101319
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JSP tag files: passing non-string values as attributes?

Tags: Java, JSP
Hello.

I'm trying to create some JSP tag files as described in J2EE tutorial (http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JSPTags5.html).

My question is: can I pass some non-string object (for example java.util.List) as an attribute?
I created simple tag, and I want to pass a List to it, but i get:

org.apache.jasper.JasperException: Unable to convert string "${form.newAccountList}" to class "java.util.List" for attribute "items": Property Editor not registered with the PropertyEditorManager
        at org.apache.jasper.runtime.JspRuntimeLibrary.getValueFromPropertyEditorManager(JspRuntimeLibrary.java:887)

Everything works just fine, except when I try to pass a List object as 'items' attribute
How to get rid of this error? My tags and JSP:
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### select.tag:
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>
<%@ taglib uri="/tags/struts-html-el" prefix="html" %>
<%@ taglib uri="/tags/struts-bean-el" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
 
<%@ tag isELIgnored="false" %>
<%@ attribute name="prefix" required="false" rtexprvalue="true" %>
<%@ attribute name="fieldName" required="true" rtexprvalue="true"  %>
<%@ attribute name="items" required="true" rtexprvalue="true" type="java.util.List" %>
            <html:select styleClass="jbankFont" property="${prefix}${fieldName}">
                <html:option key="jbank.select.default" value=""/>
                <c:forEach var="item" items="${items}">
                    <html:option key="${item.label}" value="${item.value}"/>
                </c:forEach>
            </html:select>
            <html:errors property="${prefix}${fieldName}"/>
 
### my.jsp:
<%@page contentType="text/html"%>
<%@page pageEncoding="ISO-8859-2"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>
<%@ taglib uri="/tags/struts-html-el" prefix="html" %>
<%@ taglib uri="/tags/struts-bean-el" prefix="bean" %>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
<%@ taglib tagdir="/WEB-INF/tags" prefix="app" %>
 
<html:form action="/jbank/ccm/logged/application/detal/submit" >
    <!-- 'detal' is the name of Struts form in struts-config.xml -->
    <app:select fieldName="accountType" items="${detal.newAccountList}"/>
</html:form>
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Question Stats
Zone: Programming
Question Asked By: summerian
Solution Provided By: summerian
Participating Experts: 3
Solution Grade: B
Views: 138
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01.22.2008 at 08:06AM PST, ID: 20715449

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01.22.2008 at 09:20AM PST, ID: 20716118

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01.22.2008 at 09:39AM PST, ID: 20716259

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01.23.2008 at 12:13AM PST, ID: 20721569

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01.23.2008 at 05:37AM PST, ID: 20723146

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01.23.2008 at 08:36AM PST, ID: 20724789

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01.23.2008 at 09:06AM PST, ID: 20725131

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01.23.2008 at 09:59AM PST, ID: 20725613

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01.24.2008 at 04:55AM PST, ID: 20732522

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