Pete Serafin wrote:
>
> Is it possible for the JSP error directive to capture any other type of
> exceptions other than just javax.servlet.jsp.JspException. Im trying
> to catch any types of exceptions in my JSPs including Jasper and plain
> Exceptions, but Im not sure if this is possible. Has anyone does this
> without using scriplet coding?
Based on the J2EE spec, JSPException is what you get. By definition, a
JSPException is what a "JSP Engine" must throw if it finds an error. Also
by definition, any JSP Tags - including the Struts tags - must throw
JSPException.
That being said, there is a way to get at the actual error - one of the
JSPException methods is:
public java.lang.Throwable getRootCause()
which allows you to find the actual exception.
So the way to have the "errorpage" directive be used to handle a variety of
different Exception's is to code an "errorpage.jsp" that inspects
exception.getRootCause() and makes processing decisions based on it.
One Struts-oriented solution may be to create an ExceptionAction and design
an errorpage.jsp to automatically forward you there - carrying the
exception as a parameter in some way. Then if the errorpage machinery kicks
in, you may be able to have an Action class control the processing. This
would allow you to avoid in-line scripting and tightly control processing.
Anyone see any problems with this approach? Anyone done anything like this?
FWIW -
Kevin
Here are a couple references:
http://developer.java.sun.com/developer/onlineTraining/JSPIntro/exercises/ErrorHandling/
http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/jsp/JspException.html
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