It seems to me the syntax is wrong .......... try this
<html:select property='<%=genreIds[0]%>' styleClass="inputbox">
<html:options collection="genres" property="value" labelProperty="label"/>
</html:select>

# 
Use <%=genreIds[0]%> 
insteed of <%="genreIds[0]"%>

Just remove the quotes ........... 

--- On Sun, 28/12/08, Gordian Yuan <gordiany...@gmail.com> wrote:

> From: Gordian Yuan <gordiany...@gmail.com>
> Subject: Re: html:select problem
> To: "Struts Users Mailing List" <user@struts.apache.org>
> Date: Sunday, 28 December, 2008, 8:31 PM
> http://www.theserverside.com/discussions/thread.tss?thread_id=35726
> 
> or
> 
> you can search it use google
> 
> http://www.google.com/search?hl=zh-CN&q=select+default+option+struts&btnG=Google+搜索&lr=<http://www.google.com/search?hl=zh-CN&q=select+default+option+struts&btnG=Google+%E6%90%9C%E7%B4%A2&lr=>
> 
> 
> 
> On Sat, Dec 27, 2008 at 7:33 PM, Tanb81
> <tanmoy_...@yahoo.com> wrote:
> 
> >
> > hi,
> >   I am developing a project on struts. I have a drop
> down like :-
> >
> > <html:select property='<%=
> "genreIds[0]" %>'
> styleClass="inputbox">
> >               <html:options
> collection="genres" property="value"
> > labelProperty="label"/>
> > </html:select>
> >
> > Now I need a value of this dropdown to be
> automatically selected based on a
> > value which is coming  from previous page. The problem
> is I am not able to
> > do this because I am new to Struts.
> >
> > Please help me out.
> > Thanks in advance.
> >
> >
> >
> > --
> > View this message in context:
> >
> http://www.nabble.com/html%3Aselect-problem-tp21183393p21183393.html
> > Sent from the Struts - User mailing list archive at
> Nabble.com.
> >
> >
> >
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