Who has used jdb successfully with JSPs and servlets (especially servlets!)
using JSWDK?
I felt I came close using
java -debug nameOfTheClass (however java -debug threw an IllegalAccess
exception; in fact it always does on anything I try it on. help?)
jdb -password usingThingThat-debugSpitsOut (java -debug nameofclass spits
out a string your supposed to use with jdb -password)
I got the idea from the following directions obtained from the Servlets
archive. It relied on sun.servlet.http.HttpServer of servletrunner
-----
Date: Tue, 6 Oct 1998 20:50:14 +0200
Reply-To: "A mailing list for discussion about Sun Microsystem's Java
Servlet." <[EMAIL PROTECTED]>
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From: Giacomo Cosenza <[EMAIL PROTECTED]>
Organization: Sinapsi srl
Subject: Re: how to debug servlets
Content-Type: text/plain; charset=us-ascii
I recently wrote an article in Italian on this subject. If you are able to
read
italian language I could send you the paper otherwise follow the principle
that "each java application has a class which contains a main() method from
which you start the virtual machine". This is true whatever
web-server/servlet-engine/IDE configuration you use. Personally I hate
VisualStudio but, mutatis mutandis, you shuold be able to apply in your
devlopment environment the following debugging procedure that works on
servletrunner/jdb configuration:
1) compile your servlet in debug mode (-g option)
2) start in a dos prompt the java debugger (jdb)
3) at jdb prompt load the class corresponding to the servlet you want debug
(e.g >load MyServlet)
4) at jdb prompt run sun.servlet.http.HttpServer class of servletrunner; at
this point jdb become a little java web server (but play attention to the
servletrunner limitations)
5) at jdb prompt insert a break point in one of the servlet method you
implement (e.g. >stop in MyServlet.doGet)
6) from the browser connect to the little java web server running in jbd
(e.g
http://localhost:8080/servlet/MyServlet)
7) At this point the servlet execution shuold stop at the break point you
previously set;
8) at jdb prompt step into the code to be debugged using the usual jdb
command
(next, stepi, cont).
Good luck
Mimmo
----
Thanks,
Michael
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