[Laszlo-user] Debugging java on tomcat with openlaszlo as front-end

[Gilad Parann-Nissany]

Thanks Ben. I happen to be testing on Windows (with IE in the mix). How do these instructions change for windows? 

I notice that "lps/Server/tomcat-5.0.2.4/bin/" contains the main BAT files for starting up, especially "catalina.bat" seems relevant and can accept jaca opts as a parameter. Am I on the right track? How should I set it? 

Thanks 

Gilad 



Gilad Parann-Nissany 

----- Original Message ----- 
From: "Benjamin Shine" <ben at laszlosystems.com> 
To: "Gilad Parann-Nissany" <gilad.parann.nissany at g.ho.st> 
Cc: Laszlo-user at openlaszlo.org 
Sent: Friday, December 28, 2007 2:47:24 AM (GMT+0200) Auto-Detected 
Subject: Re: [Laszlo-user] Debugging java on tomcat with openlaszlo as front-end 




Gilad, this is somewhat complicated, but very useful. The secret here is to use the Tomcat remote debugging options.  


Stop tomcat, then 
$ cd $LPS_HOME  
$ export DEBUG_TOMCAT=true 
$ ant tomcat.start  


This runs tomcat with these options: 

-Xdebug -Xint -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=9999 


I've only done the next step in IntelliJ IDEA, but you can probably do it in Eclipse too -- find UI that talks about "connect to tomcat servlet" and enter options based on the options specified above.  


You should build the server with lots of debugging information compiled in, and help Eclipse find the source. That is a difficult task, and I haven't done it in a year. 


Hope this helps.  


-ben  










On Dec 27, 2007, at 4:23 PM, Gilad Parann-Nissany wrote: 




Hi 

Sorry if this is a newbie question. I am new to the topic. 

I'm in an existing OL app, which has the setup of Java classes on the tomcat being called by xml-RPC from the (flash 9) OL client. The Java classes are on the same Tomcat instance as the LPS servlet. 

What I'm trying to achieve: set a breakpoint and line-by-line debugging (in Eclipse if possible) of the Java classes (that are running in Tomcat) when a call comes in from the client. Note I am not trying to debug the lzx code but rather the server-side java code. 

I've tried the Eclipse WTP and tried setting up Tomcat to debug through that, which usually works; but starting that up together with the LPS servlets did not work for me. 

I am guessing there is some easy way - I just missed it. Any input? 

Thanks 

Gilad 



Gilad Parann-Nissany 

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