| How to obtain original line numbers for exceptions in JSPs? [message #185007] |
Fri, 15 December 2006 10:11  |
Eclipse User |
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I am trying to debug a JSP that throws a null pointer exception. The
line number that's reported is the one in the generated .java code and
has no meaning for the jsp. Where does Geronimo put those temporary
files, so that I can peek into those to figure out, which line in my
original .jsp file causes this?
Or how else does one debug this? I tried and started the server
(Geronimo 1.1) in debug mode obviously that doesn't catch this
exception.
Michael
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| Re: How to obtain original line numbers for exceptions in JSPs? [message #185464 is a reply to message #185007] |
Fri, 29 December 2006 20:21  |
| Eclipse User |
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On Fri, 15 Dec 2006 10:11:43 -0500, Michael Moser <mmo@zurich.ibm.com>
wrote:
> Or how else does one debug this?
Don't forget, you can use all the normal debug facilities, such as setting
breakpoints,
etc, in the JSP, including setting Java Exception breakpoints ... but, as
with most Java,
NullPointerExceptions are sometimes common, so you'll sometimes hit many
of these
before hitting the unexpected one. This can be helped somewhat by setting
a breakpoint
near the beginning of your JSP, and once you hit it, _then_ turn on the
NPE breakpoint.
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