I have such custom JSP tag file:
/WEB-INF/tags/formField.tag
--------------------------------------------------------------
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ tag language="java" pageEncoding="UTF-8" %>
<%@ attribute name="fieldName" %>
<%@ attribute name="inputId" %>
<%@ attribute name="label" %>
<%@ attribute name="labelKey" %>
<%@ attribute name="required" %>
<s:set var="inputId" value="%{#attr.inputId != null ? #attr.inputId :
(#attr.fieldName != null ? #attr.fieldName : '')}"/>
<s:set var="label" value="%{#attr.labelKey != null ? getText(#attr.labelKey)
: (#attr.label != null ? #attr.label : '')}"/>
<s:set var="fieldErrors" value="%{fieldErrors[#attr.fieldName]}"/>
<s:set var="hasFieldErrors" value="%{#fieldErrors != null &&
#fieldErrors.size > 0}"/>
<div class="wwgrp <s:property value="%{#hasFieldErrors ? 'HasFieldErrors' :
''}"/>">
<table class="HiddenTable">
<tr>
<td class="wwlbl">
<s:if test="%{!isBlank(#label)}">
<label class="label" for="<s:property
value="%{#inputId}"/>">
<s:if
test="%{#attr.required}">*</s:if>
<s:property value="%{#label}"
escape="false"/>:</label>
</s:if>
</td>
<td class="wwctrl">
<jsp:doBody/>
<s:if test="%{#hasFieldErrors}">
<ul class="wwerr">
<s:iterator var="error"
value="%{#fieldErrors}">
<li
class="errorMessage">
<s:property
value="%{#error}" escape="false"/></li>
</s:iterator>
</ul>
</s:if>
</td>
</tr>
</table>
</div>
--------------------------------------------------------------
And here is the part of my "login.jsp" that uses this custom tag:
--------------------------------------------------------------
<%@ taglib prefix="t" tagdir="/WEB-INF/tags" %>
...
<s:form action="login">
...
<t:formField fieldName="password" required="true"
labelKey="msgkey.label.password">
<input type="password" id="password" name="password"/>
TODO: Forgot your password?
</t:formField>
...
</s:form>
--------------------------------------------------------------
Suppose action has a property 'fieldName' and I need to get value of a tag
attribute w/ the same name. I get tag atribute using <s:property
value="%{#attr.fieldName}"/>. The issue here is: if jsp page that uses this
custom tag does not provide value for 'fieldName' attribute, then
<s:property value="%{#attr.fieldName}"/> will return value of action
property 'fieldName'.
I did not found where jsp tag stored its attribute, but it seemed like in
PageContext.
I tried to get PageContext, but ActionContext returns 'null'. Here is my
Java code:
PageContext pageContext = ServletActionContext.getPageContext();
if (pageContext != null)
{
log.debug("pageContext.findAttribute('fieldName'): " +
pageContext.findAttribute("fieldName"));
}
Musachy Barroso wrote:
>
> I am not sure I understand what you mean. Is "someTagAttribute" set in
> the context by your custom tag?
>
> musachy
>
> On Mon, Oct 12, 2009 at 2:57 PM, Alex Siman <[email protected]>
> wrote:
>>
>> I have created JSP file tag as it is described here
>> http://java.sun.com/javaee/5/docs/tutorial/doc/bnama.html
>>
>> To get value of tag attribute 'someTagAttribute' I use this code:
>> <s:property value="%{#attr.someTagAttribute}"/>
>>
>> OGNL context works fine within this file tag. But I realized that if
>> there
>> will be an action property with the same name 'someTagAttribute' and
>> value
>> for tag attribute will not be set, then the above code will return value
>> of
>> action property as if it is the value of tag attribute.
>>
>> How to get value of tag attribute directly from OGNL?
>> --
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>>
>>
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>
>
>
> --
> "Hey you! Would you help me to carry the stone?" Pink Floyd
>
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