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Posted to user@struts.apache.org by Thom Burnett <th...@gmail.com> on 2007/02/05 16:04:06 UTC
Parameterizing the struts-config file
Can I use a parameter instead of a hard coded value in the mappings of a
struts-config.xml?
If so, how?
What I mean is:
I have a config file that looks like so:
<action path="/myAction" type="com.softrek.conference.MyAction"
name=" myForm" scope="request"
validate="false" >
<forward name="winMoney" redirect="true" path="winner.jsp" />
<forward name="loser" path="thankYou.jsp" />
....
</action>
This requires an Action that has exactly
'winMoney' and 'loser' as the strings in the mapping.findForward().
Can I use some sort of ForwardNames.WIN_MONEY instead? Or any other
parameter that will keep the strings identical. Ideally with only one place
to modify the string if it changes.
Is this possible? How?
Re: Parameterizing the struts-config file
Posted by Laurie Harper <la...@holoweb.net>.
Thom Burnett wrote:
> Can I use a parameter instead of a hard coded value in the mappings of a
> struts-config.xml?
> If so, how?
>
> What I mean is:
>
> I have a config file that looks like so:
> <action path="/myAction" type="com.softrek.conference.MyAction"
> name=" myForm" scope="request"
> validate="false" >
> <forward name="winMoney" redirect="true" path="winner.jsp" />
> <forward name="loser" path="thankYou.jsp" />
> ....
> </action>
>
> This requires an Action that has exactly
>
> 'winMoney' and 'loser' as the strings in the mapping.findForward().
> Can I use some sort of ForwardNames.WIN_MONEY instead? Or any other
> parameter that will keep the strings identical. Ideally with only one place
> to modify the string if it changes.
>
> Is this possible? How?
I don't believe there's any way to refer to a static Java constant from
within struts-config.xml, unfortunately. However, there are a couple of
projects which aim to replace XML configuration with annotations for
Struts 1, which might at least allow you to collect everything into one
place (the action class).
Another popular approach is to use a small set of 'well known' result
names ('SUCCESS', 'ERROR', 'FAILURE', etc) which you can then reference
as constants in your action classes. You still have to make sure that
your action returns and your config match up, but with a limited set of
possible values it'll be easier to spot if you have a mis-config.
L.
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