I almost simultaneously received all your three's reply. Thanks your all. I shall
remember that EL only validates inside of
the tag space.
Good night.
9/10/2002 6:12:21 PM, Hans Bergsten <[EMAIL PROTECTED]> wrote:
>Vernon Wu wrote:
>> Thanks Hans for your quick response.
>>
>> In fact, I didn't phrase my question right. The data is a path of an image. The
>expression doesn't work in the
situation. I
>> have to use the script as the followings:
>>
>> <% if(prov.getPhotoPaths() == null) { %>
>> <IMG SRC="<%=request.getContextPath()%>/images/no_photo.gif" NAME="No
>Photo Available"
>> ALIGN=BOTTOM BORDER=0>
>> <% } else { %>
>> <IMG SRC="<%=(prov.getPhotoPaths())[0]%>" NAME="Photo"
>ALIGN=BOTTOM BORDER=0>
>> <% } %>
>>
>> <IMG SRC="${prov.photoPaths[0]}"> doesn't seem to work.
>
>That's because you're using Java code in scriptlets, not JSTL and the EL
>as you asked about. With JSTL and EL, something like this should work:
>
> <c:choose>
> <c:when test="${empty prov.photoPaths}">
> <IMG SRC="<c:url value="/images/no_photo.gif" />"
> NAME="No Photo Available" ALIGN=BOTTOM BORDER=0>
> </c:when>
> <c:otherwise>
> <IMG SRC="<c:out value="${prov.photoPaths[0]}" />"
> NAME="Photo" ALIGN=BOTTOM BORDER=0>
> </c:otherwise>
> </c:choose>
>
>Note the use of <c:url> for the case when no path is provided; it adds
>the context path automatically for you.
>
>Hans
>--
>Hans Bergsten [EMAIL PROTECTED]
>Gefion Software http://www.gefionsoftware.com
>JavaServer Pages http://TheJSPBook.com
>
>
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