Populate fields after redirect in struts 2 - forms

Question

I'm trying to understand if there is an easiest and shorter way to populate the fields of a form, after it fails validation and it's redirected (following the pattern described here).
I have a form that is called from addPerson.action action, and submit action is savePerson.action.
If it fails validation, I redirect passing all parameters, so that the redirected page will populate the fields with the data inserted by the user, avoiding the user the hassle to start from scratch.
The problem of this solution is that I have to list every single parameter of the form in the struts.xml, like in the example below:
<action name="savePerson" class="personAction" method="savePerson">
<interceptor-ref name="store">
<param name="operationMode">STORE</param>
</interceptor-ref>
<interceptor-ref name="myStack" />
<result name="success" type="redirectAction">
<param name="actionName">listPeople</param>
</result>
<result name="input" type="redirectAction">
<param name="actionName">addPerson</param>
<param name="parse">true</param>
<param name="person.name">${person.name}</param>
<param name="person.surname">${person.surname}</param>
<param name="person.gender">${person.gender}</param>
<param name="person.email">${person.email}</param>
<param name="person.mobile">${person.mobile}</param>
</result>
</action>
<action name="addPerson" class="personAction" method="addPerson">
<interceptor-ref name="store">
<param name="operationMode">RETRIEVE</param>
</interceptor-ref>
<interceptor-ref name="myStack" />
<result name="success">/person/add.jsp</result>
<result name="input">/person/add.jsp</result>
</action>
I had to use the MessageStoreInterceptor in order to save and retrieve the validation error messages from a redirect.
I'm already using the ajax validation, but I wish to make my pages work in non javascript mode as well. With the code above everything works as expected, but looks weird that I have to list all my parameters inside the result tag.
Is there a better and shorter way of doing it?
thanks

Answer 1

With a redirect you start over, you throw out the value stack except for the parameters you explicitly pass in. What you probably want is chain, which snowballs the value stack.
See here for a list of result types, the link to Chain has some examples: http://struts.apache.org/2.2.1.1/docs/result-types.html
You can then just use the basic result tag and probably will not need a body.
See nmc's comment. This is what I do too, it isn't a good idea to use chain or redirectAction... creates spaghetti actions.