correct,but it seems the <c:catch>
can't find the original exception.that's what i want
to know.

 --- Helios Alonso <[EMAIL PROTECTED]> 的正文:
> So an IOException is trapped and converted by your
> logic to a DAOException 
> (the one you want to display) and throwed.  The jsp
> catchs this and throws 
> it's own exception.... hmmm...
> 
> Is it correct?
> 
> If it's correct, the place to look is if exceptions
> that jsp throws have a 
> "nestedException" or "causedBy" property...
> 
> At 22:22 20/08/2004 +0800, you wrote:
> >it seems u don't know what i mean,i know the useage
> u
> >wrote,but it only displays the el exception
> message.
> >
> >  --- Kris Schneider <[EMAIL PROTECTED]> 的正文:
> > > <c:catch var="exc">
> > >   ...
> > > </c:catch>
> > > <c:if test="${exc != null}">
> > >   <c:out value="${exc.message}"/>
> > > </c:if>
> > >
> > > Quoting Gao Di <[EMAIL PROTECTED]>:
> > >
> > > > i know the <c:catch> can catch the exception
> on
> > > > jsp,but the error message which i got from it
> > > looked
> > > > like below:
> > > > javax.servlet.jsp.el.ELException: An error
> > > occurred
> > > > while getting property "deivces" from an
> instance
> > > of
> > > > class com.service.transfer.client.DeviceHelper
> > > >
> > > > in fact this error was generated by an
> IOException
> > > in
> > > > the deep layer,and i have written my own
> exception
> > > > class to describe the detail error reason,such
> as:
> > > > catch (IOException e) {
> > > > throw new DaoException("server down");}
> > > > so i want to know in my jsp files can i use
> jstl
> > > to
> > > > catch the DaoException and show the "server
> down"
> > > > message on the page.yet the <c:catch> can only
> > > catch
> > > > the exception,it didn't know what the exactly
> > > > exception it is.
> > > >
> > > >
> > >
>
>_________________________________________________________
> > > > Do You Yahoo!?
> > > > 150万曲MP3疯狂搜,带您闯入音乐殿堂
> > > > http://music.yisou.com/
> > > > 美女明星应有尽有,搜遍美图、艳图和酷图
> > > > http://image.yisou.com
> > > > 1G就是1000兆,雅虎电邮自助扩容!
> > > >
> > >
>
>http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/
> > >
> > > --
> > > Kris Schneider <mailto:[EMAIL PROTECTED]>
> > > D.O.Tech       <http://www.dotech.com/>
> > >
> > >
>
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> > > [EMAIL PROTECTED]
> > >
> > >
> >
>
>_________________________________________________________
> >Do You Yahoo!?
> >150万曲MP3疯狂搜,带您闯入音乐殿堂
> >http://music.yisou.com/
> >美女明星应有尽有,搜遍美图、艳图和酷图
> >http://image.yisou.com
> >1G就是1000兆,雅虎电邮自助扩容!
>
>http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/
> >
>
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_________________________________________________________
Do You Yahoo!?
150万曲MP3疯狂搜,带您闯入音乐殿堂
http://music.yisou.com/
美女明星应有尽有,搜遍美图、艳图和酷图
http://image.yisou.com
1G就是1000兆,雅虎电邮自助扩容!
http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/

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