-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Donald,
On 8/28/2011 4:35 PM, Donald Jolley wrote: >> Exception handling can be configured in WEB-INF/web.xml > > This suggestion seems to hold a lot of promise for error handling. > The only problem is that I have not been able to get it to work. I > have the following stanza in the web-app container of my web.xml > file: > > <error-page> <exception-type>java.lang.Throwable</exception-type> > <location>/errors.jsp</location> </error-page> > > It is my understanding that the above is a catch-all that will trap > any error. Servlets aren't allowed to throw Throwable directly, so that might be the problem. Try catching java.lang.RuntimeException instead. > I also have the following at the top of my errors.jsp file: > > <%@ page isErrorPage="true" %> That is proper procedure. > That almost sounds like the display of the error page specified in > web.xml won't get triggered unless the default Tomcat error page > would have been displayed. IOW, it sort of suggests that it > wouldn't work with errors that would not trigger the display of the > Tomcat default error page (such as Java exceptions) I don't know > if that is the case or not; but, it sure doesn't seem to be > working. No, the implementation looks conceptually like this: try { Servlet servlet = // get the servlet to execute servlet.service(request, response); // check status code, show appropriate error page defined in web.xml } catch (RuntimeException|IOException|ServletException ex) { Servlet errorHandler = // get error handler from web.xml or default request.setAttribute("javax.servlet.error.exception", ex); // and others... see SVR 10.9.1 try { errorHandler.service(request, response); } catch (Throwable t) { // show default error page, guaranteed not to fail } } Tomcat should be able to intercept any exception that a servlet can legally throw. Again, java.lang.Throwable is too generic for that. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk5bxpMACgkQ9CaO5/Lv0PB7HACeLJ0psZpMC21m9dZ7o+bYbzC7 GkAAoLMDFZAVOLavQhDS703Y4DTGBv6D =3+3P -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org