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remotely debugging servlets

Posted on 2003-12-08
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Last Modified: 2010-04-01
Hi,
Question, created a war file and deployed my app. on application server. Now i noticed that i have a bug. Can i debug the servlet and/or jsp pages locally ? Is this possible ?
Thanks !
Sara
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Question by:saramieke
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4 Comments
 
LVL 15

Expert Comment

by:jimmack
ID: 9895680
Only if you run a servlet container locally.

You can't debug locally because by the time your browser gets the data from the server, all the processing has taken place.
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Author Comment

by:saramieke
ID: 9895687
how can i setup this environment locally then..?
thanks
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LVL 15

Expert Comment

by:jimmack
ID: 9895694
Are you getting an exception when it runs or is it just not behaving as you expect?

In the first case, you need to examine the exception that is reported to find out where in your code the exception is occurring.  In the second case, you should output some debug information to a log file and examine that.

To set up a log file for your application, you need to have a <Logger> entry in your web application <Context> in the server configuration file.

How much access do you have to the application server (and which app server is it)?
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jimmack earned 375 total points
ID: 9895711
>>  how can i setup this environment locally then..?

sorry, I didn't see this when I did my last post ;-)

You need a servlet container on your local system.  Which application server are you using at the moment?  This *shouldn't* really matter, since different brands of servlet container should still produce the same output from servlets/JSPs, so you could install Tomcat (or something similar) on your PC.  http://jakarta.apache.org/tomcat/index.html

Please post again if you need more info.
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