problem in displaying actionerrors

[Jordan Smith]

hi!
In my action:
UploadVideo
I add an action error like this:

addActionError("You must answer all the questions");

then in the code i check:

if (this.hasActionErrors()) {
			result = "input";
		}

in struts.xml i need it to call again the page that he came from. so i call the main action again:

<result name="input" type="redirectAction">getFirstVideo</result>

but in the jsp

<font ><s:actionerror /></font>

is empty!
could it be that the forwarding to another action made it clear the errors? how can i make it call the page again and all the methods?

[David Newton]

You're not forwarding, you're redirecting.

To preserve messages across redirects you can use the message store interceptor, or home-brew your own solution if it doesn't work for you. Or don't redirect.

[Jordan Smith]

hi,
i implemented Message Store Interceptor like this for getVideoPage (where i need to know if there are action errors:

<interceptor-ref name="store">
      <param name="operationMode">RETRIEVE</param>
   </interceptor-ref>

it works fine, but when i try to send a parameter to the action e.g. getVideoPage?videoId=3444, the videoId that i retrieve in the class is null!!
when i removed the interceptor declaration, it worked fine again.

what could be the problem?

[David Newton]

If you define an action-specific interceptor you must define *all* interceptors for the action. If that's the only interceptor you have defined then you're missing the bulk of the Struts 2 functionality, which lives largely in its interceptors.