please help me.
--- Gao Di <[EMAIL PROTECTED]> 的正文：
> 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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> >
>
>_________________________________________________________
> > >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！
> >
>
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> > >
> >
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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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_________________________________________________________
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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