You're right, I skimmed your post too quickly. Can you provide a more complete
stack trace? So, does DeviceHelper.getDevices() catch IOException and throw
DaoException?
Quoting Gao Di <[EMAIL PROTECTED]>:
> 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.
> > >
> > >
> >
> _________________________________________________________
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> > >
> >
>
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> >
> > --
> > 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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--
Kris Schneider <mailto:[EMAIL PROTECTED]>
D.O.Tech <http://www.dotech.com/>
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