Hi Raphael, you could use an intermediate base servlet in your app,
something like:
public abstract class BaseServlet extends HttpServlet
{
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
try
{
doPostInternal(request,response);
}
catch(Exception e)
{
request.setAttribute("my_servlet_exception",e);
//forward request to error.jsp using a dispatcher
}
}
protected abstract void doPostInternal(HttpServletRequest request,
HttpServletResponse
response)
throws Exception;
}
Your selectdetail class (better SelectDetail) will become:
public class selectdetail extends BaseServlet
{
protected void doPostInternal(HttpServletRequest request,
HttpServletResponse response)
throws Exception
{
//Do something, throwing SQLException if a DB error occours.
}
}
And your error.jsp will read "my_servlet_exception" attribute from the
request and will manage it.
Regards
Alessio
-----Messaggio originale-----
Da: Chetan Wagle [mailto:[EMAIL PROTECTED]]
Inviato: venerd́ 3 maggio 2002 11.07
A: Tomcat Users List
Oggetto: Re: How to add a throw exception to a servlet
Hi Raphel,
Can you let me know why you have this peculiar requirement of
changing the signature of the doPost method ?
Rgds,
Chetan
___________________________________________________________________________
Chetan Wagle
Project Manager
Capstone IT Technologies Pvt. Ltd.
www.capstoneit.com
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Raphael wrote:
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>The doPost method of a servlet looks like this :
>
>public class selectdetail extends HttpServlet {
> public void doPost(HttpServletRequest request,
> HttpServletResponse response)
> throws ServletException, IOException {
>
>What if in my doPost method I am using Object methods that throw other
>exceptions, like SQLException. The Java compiler would not let me write :
>
>public void doPost(HttpServletRequest request,
> HttpServletResponse response)
> throws ServletException, IOException,SQLException
>
>But I want the exception to be caught in the error.jsp page, not do a try
>{...} catch{...} inside the doPost body.
>
>I don't know if I explained it correctly but is there a simple solution to
>this problem ?
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>Version: GnuPG v1.0.6 (GNU/Linux)
>Comment: For info see http://www.gnupg.org
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>xtFJ/YRjwGEqQNESeKRTrAE=
>=IMF1
>-----END PGP SIGNATURE-----
>
>
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