Re: Filling-in a Bean inside a Servlet

Hi,
An alternative would be to do what the jsp processor does. Write your =
own piece of code that uses reflection to determine what "setters" exist =
for the bean and match those up with the request parameter names.=20
If you do some searching, you may find some free open source that does =
this already.
John Zerbe=20

-----Original Message-----
From: A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[email protected]]On Behalf Of Dani
Pardo
Sent: Friday, September 02, 2005 12:53 PM
To: [email protected]
Subject: Re: Filling-in a Bean inside a Servlet


>         Can I fill all the properties of the Bean magically on a line, =
The
> same way that the jsp does it via <jsp:setProperty property=3D"*"> ???
>         There must be a trick or a workaround, because this method =
doesn't
> scale. There must be some trick to achieve to get a Customer object as =
a
> parameter:


  Hi, I respond to myself.
        I've done intensing search and I've finally get on the =
conclusion that
it can't be done:
        When using Servlets and JSPs, you play with FORM parameters on =
the jsp
side, and play with attaching attributes on the Servlet side. Acutally,
it's almost the same I've been doing with Perl CGIs and Template =
Toolkit.

        To do the magic-bean-populating trick, you have to use some =
esoteric
framwork like Struts:

 From http://www.coreservlets.com/Apache-Struts-Tutorial/

"With Struts, the normal processing flow is that a form submits data to
a URL of the form blah.do. That address is mapped by struts-config.xml
to an Action object, whose execute method handles the request. One of
the arguments to execute is a form bean that is automatically created
and whose properties are automatically populated with the incoming form
data. The Action object then invokes business logic and data-access
logic, placing the results in normal beans stored in request, session,
or application scope."


--
Dani Pardo, [email protected]
Enplater S.A

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