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| Re: need to build servlet twice before changes have any effect [message #709936 is a reply to message #709769] |
Thu, 04 August 2011 13:10   |
 Larry Isaacs
Messages: 1354
Registered: July 2009 |
Senior Member |
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On 8/4/2011 5:27 AM, Alex wrote:
> Hello,
> I create a "Dynamic Web Project", add a servlet to it and run it in
> Tomcat 6.0 (Eclipse Helios).
>
> When I make changes to the servlet, build the project again and restart
> Tomcat, the changes haven't been applied.
> I have to make another change (like changing some irrelevant string),
> rebuild and restart again, so that the previous (not the latest!) change
> is applied.
>
> Why is the application running in Tomcat always one step behind of what
> was built in eclipse? And how do I get rid of this behaviour?
>
> Thanks
> Alex
A Tomcat server with default settings will publish the project to
"<your_workspace>\.metadata\.plugins\org.eclipse.wst.server.core\tmp?\wtpwebapps"
where it is served by Tomcat. Is the servlet class being updated in the
"<webapp>\WEB-INF\classes" folder at the publish location after the
first change to the servlet? Also, please confirm that the Tomcat
server indicates it needs to Restart in the Servers view after the first
change.
Cheers,
Larry
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| Re: need to build servlet twice before changes have any effect [message #710130 is a reply to message #709969] |
Thu, 04 August 2011 18:20 |
Larry Isaacs
Messages: 1354
Registered: July 2009 |
Senior Member |
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On 8/4/2011 10:41 AM, Alex wrote:
> Larry Isaacs wrote on Thu, 04 August 2011 09:10
>> A Tomcat server with default settings will publish the project to
>> "<your_workspace>\.metadata\.plugins\org.eclipse.wst.server.core\tmp?\wtpwebapps"
>> where it is served by Tomcat. Is the servlet class being updated in
>> the "<webapp>\WEB-INF\classes" folder at the publish location after
>> the first change to the servlet?
>
> No, the classes don't update if I change their java source and choose
> Project->Build Project. I found that the context menu of the Tomcat
> entry in the Servers tab has a "Publish" menu entry which updates those
> classes. I have never used this "Publish" function, but for some reason
> the classes got published after every second server restart.
> Is the publishing supposed to happen automatically? What triggers the
> publishing? Or do I have to trigger it manually after each project build
> step? (By the way, I disabled Project-> Build Automatically)
> I seem to be missing some information. Maybe I forgot to RTFM :blush:
> ... *which* manual?
>
> Quote:
>> Also, please confirm that the Tomcat server indicates it needs to
>> Restart in the Servers view after the first change.
>>
>> Cheers,
>> Larry
>
> Where does it indicate that it needs to be restarted? In the Servers tab
> I see:
> "Tomcat v6.0 Server at localhost [Started, Synchronized]"
> Sometimes the brackets included "Restart", but not after every project
> build step. How does the server recognize when it needs to be restarted?
>
> Thank you
> Alex
>
With Build Automatically off, I would not expect the class file for the
servlet to get updated. If the class file isn't updated, there isn't
anything new to publish. The indication in the Servers view should
remain "[Started, Synchronized]". There may be something about the
second save that could somehow be triggering a build, which updates the
class file and the desired behavior follows. If you want the server to
get updated following the first change, you will need to force a build
or turn Build Automatically back on.
Cheers,
Larry
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... *which* manual?