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Posted to user@struts.apache.org by "O. Oke" <re...@yahoo.co.uk> on 2005/08/05 22:45:26 UTC
Main class for a struts webapp...
Can anyone please tell me where the "main" (public
static void main...) class of a Strus web application
can be found. To put it another way, when I click a
button in an HTML form, which "main" class kick starts
the chain of processing that eventually leads to my
action class being executed?
Thank you.
--- Gareth Meyrick <ga...@kirkstonepass.com> wrote:
> hi,
>
> perhaps the subject should be stout vs. porter vs.
> bitter vs. pale ale vs.
> pilsner;)
>
> as an open source advocate and user, i usually
> recommend open source
> solutions. however, i have a rapidly growing client
> that is uncomfortable
> with open source, and has plenty of money.
>
> i haven't worked with many recent commercial J2EE
> application servers,
> or other the pieces that i'll need. while i have my
> opinions, i'd like
> those of the community so that i can present an
> unbiased (ok - less
> biased;) presentation of the client's options.
> comments like "IMO product
> X has the following advantages and disadvantages"
> would be greatly
> appreciated.
>
> J2EE app servers?
>
> RDBMS?
>
> integration issues (eg: one vendor's app server
> talking to another vendor's
> RDBMS)?
>
> as the implementation will involve some open source
> frameworks, any
> vendor specific issues (eg: with Struts or
> Hibernate)?
>
> etc..
>
> TIA & have a great weekend -gm
>
>
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Re: Main class for a struts webapp...
Posted by "Chad S. Lauritsen" <ch...@sherwin.com>.
it's somewhere deep inside the servlet container.
I think what you need to look at is the action servlet, which is defined
in the web.xml in a struts webapp
O. Oke wrote:
>Can anyone please tell me where the "main" (public
>static void main...) class of a Strus web application
>can be found. To put it another way, when I click a
>button in an HTML form, which "main" class kick starts
>the chain of processing that eventually leads to my
>action class being executed?
>
>Thank you.
>
>
>
>
>--- Gareth Meyrick <ga...@kirkstonepass.com> wrote:
>
>
>
>>hi,
>>
>>perhaps the subject should be stout vs. porter vs.
>>bitter vs. pale ale vs.
>>pilsner;)
>>
>>as an open source advocate and user, i usually
>>recommend open source
>>solutions. however, i have a rapidly growing client
>>that is uncomfortable
>>with open source, and has plenty of money.
>>
>>i haven't worked with many recent commercial J2EE
>>application servers,
>>or other the pieces that i'll need. while i have my
>>opinions, i'd like
>>those of the community so that i can present an
>>unbiased (ok - less
>>biased;) presentation of the client's options.
>>comments like "IMO product
>>X has the following advantages and disadvantages"
>>would be greatly
>>appreciated.
>>
>>J2EE app servers?
>>
>>RDBMS?
>>
>>integration issues (eg: one vendor's app server
>>talking to another vendor's
>>RDBMS)?
>>
>>as the implementation will involve some open source
>>frameworks, any
>>vendor specific issues (eg: with Struts or
>>Hibernate)?
>>
>>etc..
>>
>>TIA & have a great weekend -gm
>>
>>
>>
>>
>---------------------------------------------------------------------
>
>
>>To unsubscribe, e-mail:
>>user-unsubscribe@struts.apache.org
>>For additional commands, e-mail:
>>user-help@struts.apache.org
>>
>>
>>
>>
>
>
>
>
>
>
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--
Chad S. Lauritsen The Sherwin-Williams Company
Paint Stores Group MIS 101 West Prospect Ave
End User Computing Specialist 1125 Republic
Voice 216-566-1525 FAX 216-566-3536 Cleveland, OH 44115
PGP Public Key: http://planetlauritsen.com/chad/keys/work.txt
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Re: Main class for a struts webapp...
Posted by Wendy Smoak <ja...@wendysmoak.com>.
From: "O. Oke" <re...@yahoo.co.uk>
> To put it another way, when I click a
> button in an HTML form, which "main" class kick starts
> the chain of processing that eventually leads to my
> action class being executed?
The "entry point" for Struts is in the doPost (or doGet) method of
org.apache.struts.action.ActionServlet. (Prior to that, your Servlet
container did some work that you probably aren't interested in.) After
ActionServlet, the [Struts 1.2.7] RequestProcessor will figure out which of
your Actions it should call.
The best way to see what really happens is to watch it in a debugger. I use
JSwat, and have some instructions on how to get it working with Tomcat here:
http://wiki.wsmoak.net/cgi-bin/wiki.pl?TomcatDebug
Having set a breakpoint at the first line of the 'execute' method in my own
action class, the stack shows:
1. ChooseProfileAction.execute()
2. RequestProcessor.processActionPerform()
3. RequestProcessor.process()
4. ActionServlet.process()
5. ActionServlet.doGet()
6. HttpServlet.service()
... all the way back to ...
47. Thread.run()
HTH,
--
Wendy Smoak
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Re: Main class for a struts webapp...
Posted by Dave Newton <ne...@pingsite.com>.
O. Oke wrote:
>Can anyone please tell me where the "main" (public
>static void main...) class of a Strus web application
>can be found. To put it another way, when I click a
>button in an HTML form, which "main" class kick starts
>the chain of processing that eventually leads to my
>action class being executed?
>
>
Er...
I think you may have some misconceptions about how this whole Java thing
works.
Bottom line, there isn't one, which answers your question in a
completely useless way.
What do you really want to know? The entry point into a Struts Action
(Action.execute)? How that Action gets mapped from a URL to a class
(struts XML config files along with the default RequestProcessor)? How
to understand the entire Struts framework?
Dave
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Re: Main class for a struts webapp...
Posted by "O. Oke" <re...@yahoo.co.uk>.
Noted. I thank you all for your clarification and
information.
--- Yan Hu <ya...@yahoo.com> wrote:
> --- "O. Oke" <re...@yahoo.co.uk> wrote:
>
> > Can anyone please tell me where the "main" (public
> > static void main...) class of a Strus web
> application
> > can be found. To put it another way, when I click
> a
> > button in an HTML form, which "main" class kick
> starts
> > the chain of processing that eventually leads to
> my
> > action class being executed?
> >
> > Thank you.
>
> Struts is in fact a servlet. Servlets do not need a
> main in order to run. Instead, they are
> registered with your servlet containers such as
> Tomcat. And then Tomcat will run them. I would
> suggest you read a servlet book or tutorial before
> you learn Struts.
>
>
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>
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Re: Main class for a struts webapp...
Posted by Yan Hu <ya...@yahoo.com>.
--- "O. Oke" <re...@yahoo.co.uk> wrote:
> Can anyone please tell me where the "main" (public
> static void main...) class of a Strus web application
> can be found. To put it another way, when I click a
> button in an HTML form, which "main" class kick starts
> the chain of processing that eventually leads to my
> action class being executed?
>
> Thank you.
Struts is in fact a servlet. Servlets do not need a main in order to run. Instead, they are
registered with your servlet containers such as Tomcat. And then Tomcat will run them. I would
suggest you read a servlet book or tutorial before you learn Struts.
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